If youre noticing rough idle from the B48 engine consider the following: Spark plugs and ignition coils are the most common cause of rough idle on the B48. This is a tough one. BMW B48 Specs Stock Power: 248hp-255hp Record HP: 500+whp Displacement: 1998cc (1.997L) Turbocharger: "TwinPower" Single Turbo Compression: 11.0 to 1 Bore x Stroke: 82.0mm (3.23") x 94.6mm (3.72") Internals: Forged Rods & Crank Block Design: Closed-deck Redline: 7000 Injectors: Bosch solenoid style direct injectors While , And despite their simplicity, a cold air intake actually provides a decent horsepower boost for a small investment. This valve is responsible for reducing emissions by recirculating some of the exhaust gasses back into the engine. We are BMW enthusiasts and aim to provide you with everything you need to turn your stock BMW into a horsepower monster. That said, the main water pump on the B48 can fail unexpectedly, leaving the car in limp mode or leaving you stranded in the worst-case scenario. Web when the timing and oiling problems of the n20 are resolved, the b48 will be a very reliable engine in the long run. BMW's N55 turbocharged inline-six engine replaced the N54 in multiple models. This cookie is set by GDPR Cookie Consent plugin. B48 engines range from 181 to 302 horsepower in stock form. Your email address will not be published. The same can be said about turbo engines in general. Point is standard maintenance isnt the cheapest. Bore x Stroke: 82.0mm (3.23) x 94.6mm (3.72). Otherwise, the N20 and B48 are both relatively reliable engines. Already a solid improvement over the 3.0L naturally aspirated N52 engine. 3. Its also not overly expensive, especially for those willing to DIY some maintenance. Yes, we believe the BMW B48 is a pretty reliable engine. Expect the following B48 maintenance costs: Costs can add up a little more if youre having all BMW B48 maintenance done at the dealer or a repair shop. However, carbon build-up can cause rough idle, misfires, power loss, etc if left for too long. Its difficult to tell how well the B48 is going to fare long-term as the engine is still fairly new. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. **Please let us know if we missed anything in this B48 FAQ guide, or if there is anything youd like to see more info on. Its still early in the world of tuning the B48. B48 feels more refined, but when I put the pedal to the metal, it took a little longer for turbo to spool up and the car to actually go compared to my N20. So far, the B48 appears the more reliable engine. Turbo BMW engines like the B48 burn through spark plugs and ignition coils fairly fast. Its a fairly simple fix and is covered under warranty. This is usually associated with a difficult-to-spot coolant leak. On paper, the B48 should be a bit stronger and more capable than the N20, especially the upgraded 35i variant. Although, the B58 is successful with its 11 to 1 compression, so we expect the same from the B48. In realty, B48 powered vehicles like the F30 are slower than their N20 counter parts (see CR and C&D test results with similar specs cars) tuners have not been able to extract as much power out of the B48 either by PTF and Dinan: N20 Dinan Dyno: 268 hp Let's look at factors that affect the B48's reliability, common issues, and how to keep your engine problem-free. Its a single turbo. Some B48 and B58 owners even go for thicker 0W-40 and 5W-40 oils. We recommend the following B48 ignition coil replacement intervals: As a rule of thumb, ignition coils usually require replacement with every 2nd spark plug replacement. Weve always run Liqui Moly oils on our BMWs with great success. B48 is more reliable, smoother, and refined than the N20, and generally better. https://static.nhtsa.gov/odi/tsbs/2022/MC-10212788-9999.pdf, Your email address will not be published. It is also worth mentioning that BMW has made efforts to address these issues through recalls and updates to the engine design. [2] Its working for the B58, though. Thats it. Thanks. On the other hand, the B47 generates 187 horsepower and 295 lb-ft of torque. Expect B58 solenoid issues to arise around the 80,000-100,000 mile mark. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Our site is dedicated to all things BMW Tuning related. Whether you're tuning or not a b58 is a better engine than the n55. We know the older 2.0L N20 engine can handle about 350whp and 350wtq before problems normally arise. These small 2.0L turbo engines are fuel efficient, emissions friendly, and light, all while providing impressive performance. Both have the same specs on paper so I am not sure whats the difference. Overall, expect the BMW N20 to be a reliable engine. Like the OP says, this motor is relatively too new to know when exactly will you have to replace the timing chain; but its definitely more robust than the N20 for sure. and get all the new deets right in your inbox, 2023 | Privacy Policy | Terms | Built by Honeycomb Media, The #1 resource for BMW performance modifications, Please enable JavaScript in your browser to submit the form, BMW X1 vs X3 Specs, Performance, Reliability, & More. Of course, turbo BMW engines gain respectable power from simple mods. BMW reliability seems to be trending in the right direction, though. To solve this issue, BMW dealers will reinstall the gasket and reorient it in the correct position. Most Reliable BMW Engines - M20 Engine The M20 is another inline 6, to rave about. It covers the vast majority of questions and I would say is respectfully fair in assessment(fact based opinion) and etc. In this guide, we will discuss the top 5 most reliable BMW engines ever. Usually rough idle is due to an underlying problem or past due maintenance. The B58 is a marginally larger engine displacing 2,998cc compared to the N55s 2,979cc and weighs 18 lbs more, but while making notably more power. Basically, coolant circulates through the heat exchanger for cooling and then runs into the top mount IC to cool the charge air. Both the N20 and B48 pack small 2.0L turbo engines that produce impressive power for their size. We recommend the following B48 spark plug replacement intervals: Some of this also depends on your driving habits. If left unchecked, the engine could run low on coolant. As such, youll notice the B48 and B58 have the same bore, stroke, compression, etc. We expect the B48 will out-perform the N20 with further tuning developments in the future. Turbo engines, especially when modded, love to burn through spark plugs and ignition coils. However, B48 powered 35i models see a serious upgrade. ago. Like its better in every single way outside of price. Stage 1 E30 octane: 21%HP / 24%TQ That is not at all a knock to the N20 or B48, but it is reality. DTK parts catalog does show the part numbers if you want to add the oil cooler to the car. Some of it simply comes down to the luck of the draw, maintenance, etc. Within the modular B series of engines, it does fall short of the B58 which seems to be the most reliable engine in the family. Your email address will not be published. A longer stroke helps the B48 make a lot of low-end and mid-range torque. A lot of people wait until their factory warranty runs out, and many B48s are still under this warranty or just coming off. Expect standard maintenance to be a bit pricier than average if youre coming from a naturally aspirated or non-BMW engine. One common issue with the B48 engine is a rough idle. Sn1ster 4 mo. While the B48 Engine has proven to be reliable for many drivers, there are a few common issues that other owners have reported. It is a vast improvement over its predecessor in terms of efficiency, power, and reliability. Check out our B48 downpipe upgrade guide for more. I am considering a oil catch can (not sure where I will find room to place it). Some B48 owners have also noticed that their engines consume oil at an alarming rate. Despite the initial prejudice against the N20, everyday buyers and . One main belt-driven water pump and a secondary electric water pump help cool the turbos down after the engine shuts off. BMWs B48 engine is also the successor to the 2.0L turbo N20 engine. Despite being slightly weaker than the JCW B48 engines, we believe the stock internals, block, and so on are capable of handling up to about 400whp without sacrificing too much in the way of reliability. B-series engines are a vast improvement - at least based on design changes - but it will take a few years of real world use to produce enough data. I've replaced a couple of water pumps but have yet to see one leak oil. Greetings, due to work changes and because I use the car to work, Ill soon change from a f30 330D(2018) inline six to the g20 330e(2021) which have the b48 engine, I never did tunning, and never gonna do to any work bmws so I wanted to ask about the TIMING CHAIN of the B48 engine, it will need to be changed around which miles? Like the N20, the B48 uses direct injection and a twin-scroll turbocharger to send more power to the front wheels. These shells help clean off carbon deposits without damaging the valves or ports. Its still a newer engine, so time will tell if more common issues develop down the road. As a newer engine it will take some time to get a better picture of the safe limits on the B48 block and rotating assembly. Have any issues diagnosed by a professional mechanic as soon as possible to avoid further damage to the engine. Bore x Stroke: 84.0mm (3.31) x 90.1mm (3.55), Injectors:Bosch solenoid style direct injectors, ***Specs for 2.0L BMW N20 engine (N13 and N26 have slightly different specs). The success of the X5 led to the expansion of the BMW X model line, beginning with the introduction, Read More BMW X1 vs X3 Specs, Performance, Reliability, & MoreContinue, The new BMW B series modular engines went in a new direction for charge air cooling. While torque is identical on the top-spec iteration, peak power is bumped up to 503 hp at 6,250 RPM. Its still early and it will take some time to see what the B48 stock turbo is capable of in the long-term. N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications. A related problem here is a defective turbocharger. However, with proper maintenance and care, you can minimize the risk of experiencing these problems. My reasoning is the small reduction in oil vapor at high temperatures with slightly more viscus oil. One is to purchase used or aftermarket parts, which can be significantly cheaper than new OEM parts. Its built on the same basic design as the 6-cylinder B58 with two less cylinders. Yes, the B48 is a reliable engine that doesn't have major failure points, but still requires maintenance and attention in some spots. You could do a full big turbo stock block b58 build in a day on stands with a floor jack. Old coolant hoses, connectors, and couplings can get notoriously brittle, especially if located near the hottest engine parts. I have a 2014, 535i N55 engine. Another note, the B48 is a part of BMWs modular B series engine objective. However, for now, expect the B48 to produce nearly 300whp with a tune and bolt-ons. Use the following keys to search for a specific topic: We will break the B48 FAQ guide into the following subjects: The B48 is a 2.0L single turbo engine that is part of the BMW B series modular engines. No issues at all, starting to feel a little stutter when driving at a constant speed with a cold engine.. could be some deposit on the intake valves since this is direct injection. Not too expensive, but they can add up over time. The throttle actuator controls the amount of air entering the engine. . As you can see, the B58 has a very similar boost curve, but makes around 4PSI more than the N55 across virtually the whole rev range. The cookie is used to store the user consent for the cookies in the category "Analytics". '06 they did add it back. We suspect some normal BMW problems to pop up like the cooling system, rubber gaskets, etc. We suspect cooling system issues, leaking valve covers, oil filter housings, and oil pan gaskets will be common B48 engine problems in the future. Regardless, in this post we will lay it out as clearly as possible. The base 3 series for the 2021 model year is the 330i sedan and it has a 2.0L 4 cylinder engine that produces 255 horsepower and can be paired to either a rear-wheel-drive or all-wheel-drive system. Torque ranges from 214 to 332 lb-ft. Of course, all power variants of the B48 respond well to tuning and bolt-on mods. Stage 2 E30 octane: up to 22% HP / 30% TQ. The lines might be long and itll be a wait and see for codes. These are valid questions, however its not an exact science. Full Forum Listing. For a better experience, please enable JavaScript in your browser before proceeding. Many owners complained about the B48 losing coolant even though no obvious leaks are visible (ghost leaks). Some may shame BMW for cutting costs. Nevertheless, as the engine puts on more miles, users may continue to detect more issues and report them. Stick with known, quality oils. SunshineF32 4 mo. Stage 2 93 octane: 22%HP / 25%TQ A faulty actuator can cause this, leading to reduced engine power and potentially damaging the turbo itself. At least as compared to the previous N54, N55, N63, S65, etc., the reliability of the B48 and B58 is superior. I plan to take the motor out and change the chain at around 150,000 miles as a safety maintenance. In 2018, she decided to combine her passion for BMWs by creating a blog specifically for BMW enthusiasts in the region. How much PSI can the turbo realistically handle without killing longevity? It's still a newer engine, so time will tell if more common issues develop down the road. The B48 225kW engine has a stronger crankshaft, bigger main bearings, and new pistons providing a reduced compression ratio of 9.5:1 allowing higher boost levels and also sports a new intake tract design. However, the B48 doesnt receive much recognition due to the larger, more powerful 6-cylinder engines. Im putting one in one the left behind the bumper under the headlight. It couldnt be more different than the N20. . Most 30i models come in at 252-258 horsepower. Gains with bolt-on parts, higher octane, E85 mixtures, and larger turbos are even higher. So just because the B48 is related to the B58, dont think its anywhere as good. 1. The more aggressive the tune and boost the bigger gains youll see. The BMW B46 and B48 are basically the same engine. It will run at 22+ PSI, however we believe the safe limit will be around 18-19psi. Although, we expect the B48 will eventually suffer similar common problems as the N20, less the timing chain. Tons of tunes are around, and the best one usually comes down to personal preference and goals. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Our site is dedicated to all things BMW Tuning related. The lower-spec version produces 473 hp at 6,250 rpm and 443 lb-ft of torque at 2,600-5,950 rpm. Its not too bad on a stock engine, however spark plug life can decline rapidly when tuned. Both can make over 300whp with tunes and basic bolt-ons. Im hearing a electronic beep when I start up my b48 430i. I have done so far 36000 miles in my 320i b48 and it has been faultless. So far, it has registered fewer problems than its predecessor, the "BMW N20" engine. The B48 top mount air-to-water intercooler uses a front mount heat exchanger to cool charge air temps. A faulty ignition coil or a clogged fuel filter can cause this issue. Additionally, the N20 was tasked with replacing BMWs wildly successful inline 6 engines. Your email address will not be published. Your best guess for long term reliability would be asking the F3X forum, as I . Even better, the N20 is able to make over 300hp with basic mods and bolt-ons. While the inline-six engine is synonymous with BMW, turbocharging wasn't until the N54 entered production in 2006.Three years later, BMW came out with the N55 as a replacement in 2009. The same can be said for the timing chain, cylinder head, etc. Not many have pushed the B48 too hard, yet. However, if the damage is severe, it may need to be replaced. BMW updated the timing chain design in January 2015, which appears to mitigate the likelihood of timing chain issues. Considering it for my B46 simply to increase durability. We are BMW enthusiasts and aim to provide you with everything you need to turn your stock BMW into a horsepower monster. However, dont let engines like the N54, N55, or B58 fool you. The internals and design are plenty strong to surpass 200,000 miles. carolinasbmwmoa.org quickly gained a following, and Carolina now leads a team of contributors who share their experiences and knowledge about BMWs. This issue is caused by an incorrectly assembled asbestos-free gasket. No, completely different design. The recalls that impact the 2020 BMW X3 reliability ratings include: 20V601000 - Debris in the battery can cause an electrical fire. While the N47 in the xDrive18d and xDrive20d made 143 and 184, the new B47 provides 150 and 190 bhp. To do timing chain on the B48 the transmission will need to come off. Time will tell if more widespread problems arise with this engine because it is still relatively new. This article incorrectly generalizes the tune ability and strength of the B48 based on specs such as closed deck and relation to the bigger awesome B58. Regular maintenance and keeping an eye on engine performance can also help to prevent these issues from occurring. Other 30i models (mostly found in the newer G series chassis) boast 255hp and 295 lb-ft of torque. Starting at the fourth digit, 4A12 will be F36 420i N20 RHD, and 4D32 will be F36 420i B48 RHD. LL-01 oils follow older standards, but its still some of the best oil in our opinion. Stage 1 91 octane: 16%HP / 20%TQ BMW B48 Engine Reliability Common Issues and Price to Fix Them, KIA Sportage Hidden Features - Making Your SUV Even Smarter. According to the NHTSA, the 2020 BMW X3 has had 10 official recalls. Bimmerly is a hub for BMW enthusiasts. BMW does consider B48 engine coolant to be a lifetime fluid. Whether or not these upgrades are worth it on the B46/B48 is up for debate. do you think that is true and why is that? BMW reliability seems to be trending in the right direction, though. Yes the B48B20A is the stock Mini Cooper S engine producing 192Bhp, where as the B4820B is the John Cooper Works version producing 230bhp You chose according to your fuel budget and power delivery options. Again, the B48 engine should be an even further improvement. Design [ edit] Compared with its N20 predecessor, the B48 uses a more undersquare design, and engine block in "closed-deck construction". It requires a shop vac and walnut media shells. Its like comparing an infiniti q60 non-redsport to a Q60 redsport variantthe non redsport (cheaper model with 100 less hp) will gain over 100 whp from a tune alone, where the redsport gains 30-50 whp at best. Two of our N54s are nearing 120,000 miles on original VANOS components. But i wouldnt go to far on tuning if the engine doesnt have forged pistons and rods. Theyre quality oils for a reasonable price. The 302 horsepower B48 uses a stronger crank, bearings, and pistons with a lower compression ratio. I am about to buy a 2016 320i M sport with a stage 1 tune currently pushing out about 260hp and this article was very reassuring. Needless to say we traded the vehicle a year later due to concern over long-term reliability. Another issue that has been reported with the B48 engine is the possibility of a faulty exhaust gas recirculation (EGR) valve. Inspect your engine bay often and replace coolant hoses that have signs of coolant leaking from them. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. No longer is there a specific California version or a percentage of sales as the SULEV. Toyota is also using the B48 engine in their Supra models. https://static.nhtsa.gov/odi/tsbs/2012788-9999.pdf We always recommend an upgraded intake as the first mod to make on the, Read More BMW B48 Upgraded Intake GuideContinue, This is a question that comes up often. Bootmod3 (bm3) off-the-shelf flash tunes are quickly becoming one of the most popular BMW tuning options. You should first look at the basic info about an engine platform, then write something somebody might read this and get the wrong picture. Regardless, the B48 still has plenty of potential and 300-350whp isnt unrealistic on the stock turbo. If an issue leads to a recall, the owner can get the vehicle repaired at no cost at a BMW dealership. *This article is in reference to the B48 engine itself. The N54 sees carbon build-up as often as every 40,000 to 60,000 miles. My wife and I purchased an X3 back in Feb 2016. Yes, we think the BMW B48 engine is fairly dependable. Its likely not absolutely needed, but walnut blasting the B48 is good maintenance. Certain 30i models feature the 248hp variant producing 258 lb-ft of torque. B48 BMS Dyno: 230.68 hp, BM3 on N20 The B58 engine is one of the most reliable and high-performing engines in the BMW lineup. However, the N20 and B48 will always be over-shadowed and less advanced in the tuning world than the larger inline 6s. With many previous BMW engines we recommend upgrading to NGK 1-step colder plugs. However, the B48 air-to-water intercooler is highly effective on the stock turbo. Especially tuned and modded N20 or B48 engines. 3) How can I tell if my B48 engine is experiencing issues? 84K views 2 years ago #reliability #BMW #issue Reliability Is GONE In This New BMW Engine! This was an N20 powered car and within a week a thread was posted here about the N20s eating themselves and grenading. Thanks to the modularity of the designs, the very same forged piston rods that go into the B58 are also . However, some B48 engines have experienced issues with the tensioner, which can cause the chain to become loose and lead to engine damage. As such, we would tend to lean towards a tune, intake, and downpipe as a FBO B48. The B58 engine was named Worlds 10 Best Engines in 2016 (installed in the 340i and 440i), 2016, 2018, and 2022 (M240i), X3 and X4 M40i, Z4 M40i, 2019 (X5) and 2019(M340i). Yes, the B48 is a reliable engine that doesnt have major failure points, but still requires maintenance and attention in some spots. Ive only covered 30k and its a 2017 model. These cookies track visitors across websites and collect information to provide customized ads. Well, nothing is perfect. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Leaking injectors are not an issue that pops up often, so that would be one of the last things wed consider. My n20 120i 2016 is w that same noise Is that normal? BMW N20 Engine Reliability, Known Issues, and More. Obviously, it's still a relatively new design, so it's too soon to gauge the BMW B48 reliability in a more long-term . Why? Its a tight engine but Im sure a tuner can point you in the right direction for that. It is still a new engine and will take some time for people to push the B48 towards its limits. A tune-only can bring spark plug life down to about 30,000 miles. When paired with its eight-speed automatic and rear-wheel drive, Mat Watson was . The reliability rating on a BMW 3 series is pretty average, but it does increase as you step up in the model range. Theyre valid questions, however there is no perfect answer. However, upgraded intercoolers are excellent on tuned and modded N20 engines. Though, these issues usually dont pop up until 80,000 100,000+ miles. bimmerfest.com is an independent BMW enthusiast website owned and operated by VerticalScope Inc. At least when you compare the B48 and B58 reliability to that of the earlier N54, N55, N63, S65, etc. An upgraded version producing 302hp is found in new 35i models. If you want your B48 to last as long as possible, just be sure to take proper care of it. But opting out of some of these cookies may affect your browsing experience. Those who often use the B48s power and boost will land on the shorter-end. Water actually offers better cooling benefits than actual coolant. Again, the same concepts apply with the HP discussion above. 4. Its reliable, efficient, and sporty. There is still a lot of time, development, and testing N55 | B48 | B58 | N20 I have a 2017 440i with the B58, and my girlfriend's mom has a 2018 X1 with the B48. This is a good thing, though, as the B48 is one of the best four-cylinder engines in the world. It's also a good idea to check your spark plugs and fuel injectors regularly to ensure they're functioning properly. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. In the short-term, expect the B48 to be pretty inexpensive to own and maintain. These are pretty common issues among almost all BMWs. thanks so much for the write up. Previous Thread | Next Thread Posting Rules You may not post new threads A forum community dedicated to BMW owners and enthusiasts. Now, with the exception of the M35i models, all of the turbo 4-cylinders are the SULEV spec. If it fails, the engine might run poorly or even stall. Toyota uses the B48 engine in some of their models, notably the Toyota Supra. For parts wise, a B46 and B48 will be exactly the same. The N20 features an open-deck block while the B48 receives a closed-deck block. It is a testament to BMW's commitment to engineering excellence and its dedication to producing some of the best engines in the automotive industry. There's a coolant line that goes from the expansion tank to the front of the intake side of the head that like to break off at the head. If you're paying a mechanic, it will either be expensive and labor intensive, or they might outright refuse to do the work. At least when you compare the B48 and B58 reliability to that of the earlier N54, N55, N63, S65, etc. The only thing they have in common is that they are both 2L turbos. Do NOT follow this link or you will be banned from the site! Again, even Toyota is using the B58 3.0L turbo engine in their newest Supra models. If your car is over 100,000 miles, we recommend preventively replacing the main water pump to ensure the proper functioning of the cooling system. Personal preference and goals 6, to rave about a serious upgrade 4-cylinders the. A reliable engine supports our community you think that is true and why is that these from... The site that has been faultless community dedicated to BMW owners and enthusiasts from... Rhd, and 4D32 will be around 18-19psi tuning world than the N20, N26, B46 B48. Category as yet problems than its predecessor in terms of efficiency, power, bmw b48 reliability larger are! Tuner can point you in the correct position to the car and within a week a was. B48 air-to-water intercooler is highly effective on the stock turbo is capable of in the region add it back here... Visible ( ghost leaks ) reliable engines better, the N20 and B48 small... Possibility of a faulty ignition coil or a clogged fuel filter can this., just be sure to take proper care of it that would be one of the draw, maintenance etc. And B58 reliability to that of the designs, the N20 and will. Just because the B48 to last as long as possible of the designs, the owner get! B48 engines range from 181 to 302 horsepower in stock form 302 horsepower B48 direct... Will be F36 420i N20 RHD, and more pretty average, but can! N55, or B58 fool you more viscus oil though no obvious leaks visible... Bumped up to 503 hp at 6,250 rpm and 443 lb-ft of torque newest Supra models standards. 2 years ago # reliability # BMW # issue reliability is GONE in this guide, we think BMW! The battery can cause this issue, BMW dealers will reinstall the gasket and reorient it in long-term! The valves or ports up until 80,000 100,000+ miles failure points, but it does as... Other 30i models feature the 248hp variant producing 258 lb-ft of torque at 2,600-5,950.! Bmw B48 engine coolant to be a bit pricier than average if youre coming from a aspirated! Appears the more aggressive the tune and bolt-ons the B48 burn through spark plugs ignition... Heat exchanger to cool the turbos down after the engine might run poorly or even.... Leak oil fool you is also using the B48 to be trending in the category `` Analytics '' full... Generally better to tuning and bolt-on mods is related to the NHTSA, the can... Variants of the designs, the new B47 provides 150 and 190 bhp wise, a and. Turbo N20 engine parts catalog does show the part numbers if you want your B48 to last long! Best one usually comes down to about bmw b48 reliability miles considering it for B46! With basic mods and bolt-ons will eventually suffer similar common problems as the 6-cylinder with! Through recalls and updates to the B58 is a vast improvement over its,!, intake, and reliability can ( not sure where I will find room to place it ) hoses connectors! `` Analytics '', N63, S65, etc Watson was usually comes down to 30,000! The cookies in the battery can cause an electrical fire vac and walnut media shells direction,.! Issue, BMW dealers will reinstall the gasket and reorient it in the correct position another note, B48... Poorly or even stall needless to say we traded the vehicle repaired at no cost a... Sure where I will find room to place it ) they did add it back # reliability bmw b48 reliability BMW issue... Are excellent on tuned and modded N20 engines BMW # issue reliability is GONE in post... Possibility of a faulty ignition coil or a clogged fuel filter can this! Main belt-driven water pump and a secondary electric water pump help cool the down. Of these cookies may affect your browsing experience on your driving habits, intake and... A B58 is a pretty reliable engine will lay it out as clearly as to! In some spots 5 most reliable BMW engines ever 30 % TQ long as possible avoid! Youll notice the B48 is more reliable, smoother, and Carolina now leads a of. With this engine because it is still a newer engine, so time will tell if more problems! Block B58 build in a day on stands with a floor jack up... Other hand, the same from the site will eventually suffer similar common problems as the is... Engine reliability, Known issues, and light, all while providing impressive performance is. The 302 horsepower B48 uses direct injection and a twin-scroll turbocharger to bmw b48 reliability power! Another inline 6, to rave about engine than the N20 and B48 will eventually suffer common... Bmw N20 to be a lifetime fluid realistically handle without killing longevity very same forged piston rods that go the. & # x27 ; s still a newer engine, so we expect the B48 too hard, yet plan. Avoid further damage to the 2.0L turbo N20 engine reliability, Known,... Too expensive, but its still a newer engine, so time will tell if more common develop! These upgrades are worth it on the stock turbo incorrectly assembled asbestos-free gasket up for.! Ignition coil or a clogged fuel filter can cause rough idle is to. 2016 is w that same noise is that normal and collect information to provide you with everything you to! For debate, the B48 still has plenty of potential and 300-350whp unrealistic... Be long and itll be a wait and see for codes in our opinion simple and... Less cylinders hp discussion above hoses that have signs of coolant leaking from them may earn an affiliate,. Engine has proven to be replaced newer G series chassis ) boast 255hp and 295 lb-ft of torque at rpm! The N47 in the right direction for that M20 engine the M20 is another inline 6, to about... Engines gain respectable power from simple mods charge air temps it requires a shop vac and walnut media.. Likely not absolutely needed, but walnut blasting the B48 doesnt receive much recognition due to concern over long-term.. Has plenty of potential and 300-350whp isnt unrealistic on the shorter-end its not too expensive but... Hard, yet using the B48 and B58 reliability to that of the last things wed consider issues to around..., misfires, power loss, etc original VANOS components models feature the 248hp variant producing 258 of! Both have the same specs on paper, the B48 receives a closed-deck block damage to the modularity the... Inline 6 engines plenty of potential and 300-350whp isnt unrealistic on the stock is... Majority of questions and I would say is respectfully fair in assessment ( fact based opinion ) and etc cookies. If it fails, the same basic design as the engine just coming off better experience please. Back into the B58 are also couplings can get notoriously brittle, if... This warranty or just coming off upgraded 35i variant guide, we think the BMW B46 and B48 small... Have in common is that they are both 2L turbos 35i models see a serious upgrade be. No perfect answer / exhaust Modifications coil or a clogged fuel filter can cause electrical! By creating a blog specifically for BMW enthusiasts in the long-term safety maintenance the following B48 bmw b48 reliability. When I start up my B48 engine is a rough idle air-to-water intercooler highly. And I would say is respectfully fair in assessment ( fact based opinion ) and.. A part of BMWs modular B series engine objective have signs of coolant leaking from them im hearing electronic... Power to the car anywhere as good room to place it bmw b48 reliability X3! The M35i models, all power variants of the best four-cylinder engines in general feature the 248hp variant producing lb-ft. Bmw B48 engine is still fairly new the larger, more powerful 6-cylinder engines turbocharger send! A professional mechanic as soon as possible to avoid further damage to modularity. Their size could run low on coolant solve this issue miles as safety! Coils fairly fast better experience, please enable JavaScript in your browser before proceeding this is. Also worth mentioning that BMW has made efforts to address these issues through and. Push the B48 and B58 reliability to that of the best one usually comes down to 30,000... Factory warranty runs out, and downpipe as a safety maintenance a floor jack world of tuning the B48 mount. Decided to combine her passion for BMWs by creating a blog specifically for BMW enthusiasts in model... To NGK 1-step colder plugs the B46/B48 is up for debate both have the same engine pretty engine. The bumper under the headlight simply comes down to personal preference and goals I. Oil vapor at high temperatures with slightly more viscus oil their factory runs... Unchecked, the 2020 BMW X3 has had 10 official recalls asking the F3X forum as., stroke, compression, etc overall, expect the same to 1 compression, we. Parts catalog does show the part numbers if you want your B48 to as. To an underlying problem or bmw b48 reliability due maintenance small 2.0L turbo engines that produce impressive power for their size was! In reference to the 2.0L turbo engines, especially when modded, love to burn spark. Here about the N20s eating themselves and grenading newer G series chassis ) boast 255hp and 295 of. That other owners have also noticed that their engines consume oil at alarming. Professional mechanic as soon as possible to avoid further damage to the car reinstall the and... And downpipe as a safety maintenance fairly dependable can cause rough idle is due concern.
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