bmw b48 reliability

If youre over 100,000 miles on your B48-powered BMW, a walnut blast is recommended. "Passenger restraint system malfunction" BMW X3 Whats This? It's built on the same basic design as the 6-cylinder B58 with two less cylinders. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Leaking injectors are not an issue that pops up often, so that would be one of the last things wed consider. As per the N20, the block and head are made from aluminium. The BMW N20, introduced in 2011, was the first four-cylinder BMW engine to be sold in the North American market in over a decade. In this guide, we will discuss, Read More BMW B48 Max Boost Stock TurboContinue, As a newer engine, B48 charge pipe (CP) failures appear less common than many of the other turbo BMW engines. I will take a picture soon! The BMW B58 is a turbocharged straight-six engine, which began production in 2015. . BMW engine maintenance is typically a little more expensive than your average car. The most common version of the BMW B48 produces 255 horsepower and 295 lb-ft of torque. You can say we are somewhat N54 fanatics. It covers the vast majority of questions and I would say is respectfully fair in assessment(fact based opinion) and etc. The cookie is used to store the user consent for the cookies in the category "Analytics". Its not too bad on a stock engine, however spark plug life can decline rapidly when tuned. Check the website again, they finally corrected the values. It's also a good idea to check your spark plugs and fuel injectors regularly to ensure they're functioning properly. BMW reliability seems to be trending in the right direction, though. I will dyno it before mapping as it feels more like 200 bhp but I've been quoted 260 on the remap. Yes I've been waiting and Injen finally came out with it recently! 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. Direct injection engines are inherently prone to carbon deposits forming around the intake valves, and injector nozzles. The engine also faced similar issues with the timing chain and wastegate failure. If it fails, the engine might run poorly or even stall. A certified mechanic can help you assess the damage and recommend the best course of action. Again, the B48 engine should be an even further improvement. It was a big deal. You can also tell from the VIN without even doing a lookup. Its no secret that BMW charge pipes are a common failure at higher than stock boost. Our garage currently includes a 2008 135i, 2007 335i, and 2008 535i. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. However, engine strength is the big question. Although this engine isn't perfect, because it's not turbocharged, it avoids the contemporary N54 engine's problems. Well, nothing is perfect. Full Forum Listing. 3) How can I tell if my B48 engine is experiencing issues? Those looking to push 350+whp are definitely best suited to the larger, more capable engines. alex if not any whining problems then change is after 200-250000 kilometers. Were big fans of VRSF products, and believe they offer the best catless downpipe for the BMW B48. Stage 1 93 octane: up to 16% HP / 26% TQ Unlike the N55, the B58 features a closed-deck engine design. For B48 you meant? From the common issues you can expect to encounter with the engine to potential fixes and tips to maintain your BMW B48 engine,this article will answer questions you may have and beyond. Rough idle can be a frequent issue on many engines. Stage 2 91 octane: 20%HP / 24%TQ Though, this is on built N20s with a larger turbo. However, being aware of the engine's potential issues will prompt you to have it checked by a professional if any symptoms arise. Could you help me on that or fine me someone who can do that for a reasonable price. Required fields are marked *. Not too bad for a 2.0L engine. You should first look at the basic info about an engine platform, then write something somebody might read this and get the wrong picture. ~325-350wtq. Note this is an issue that only affects early B48 engines. However, the valve cover gasket, and the oil pan gasket will likely start leaking closer to 200,000 miles. 2019-present F40 M135i xDrive your BM3 estimated gain chart is incorrect, that is for the 35i B48 model that is already currently upgraded (tuned) to 302 hp. Yes, it's expensive to maintain a 3-Series BMW once it's outside of the factory or CPO warranty. It's. That is not at all a knock to the N20 or B48, but it is reality. While it's normal for engines to use up some oil, excessive consumption can indicate a problem. Can , In V6 or V8 engines, the spark plug wires are on both sides of the engine. 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. 1. BMW is long known for their ability to build beautiful inline 6 engines. Nearly every single BMW model line houses the B48 engine and it wears many different hats. Like any engine, the BMW B48 can develop issues if not properly cared for. I've found cars equipped with the the B engines to be super reliable here in the Midwest. The only thing they have in common is that they are both 2L turbos. You can say we are somewhat N54 fanatics. Dmitry has been an editor and author at Cararac.com since 2015. Anything over 20psi will not add much power. Yes, the B48 crank and connecting rods are forged as with the larger B58 6-cylinder. I would say on the 11:0 compression version 300hp is about the max on stock internals. Old coolant hoses, connectors, and couplings can get notoriously brittle, especially if located near the hottest engine parts. Stage 2 93 octane: 22%HP / 25%TQ The BMW B48 is a turbocharged inline 4-cylinder engine that was first introduced in 2015 replacing the N20. Some even run 70-80% for canyon or track driving as the water will help cooling. This mostly applies to N20s produced prior to 2015. B-series engines have been designed to be modular. Yes, the B48 is a reliable engine, especially if we compare it to the N20 which had major timing chain issues. On paper, the B48 should be a bit stronger and more capable than the N20, especially the upgraded 35i variant. Add more bolt-ons and mix in some aggressive driving and B48 spark plugs may require changing every 15,000 miles. 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. Usually rough idle is due to an underlying problem or past due maintenance. 11.0:1 compression ratio. The most important aspect is sticking with a quality, trusted tune. The B48 OE Champion spark plugs are highly effective on most stock turbo engines. So far, the B48 appears the more reliable engine. All in all, its really difficult to predict how long any engine is going to last as there are simply way too many factors to consider. The X3 . Right now, we expect the B48 will earn a better reputation for strength and durability vs the N20. At least when you compare the B48 and B58 reliability to that of the earlier N54, N55, N63, S65, etc. This is not meant to be a knock towards the N20s performance. Two of our N54s are nearing 120,000 miles on original VANOS components. They last about twice as long. Your email address will not be published. the lower level trims with the B48 are severely detuned and gain closer to 30% hp from a tune alone. Yes, we believe the BMW B48 is a pretty reliable engine. Leave a comment and let us know! Many owners complained about the B48 losing coolant even though no obvious leaks are visible (ghost leaks). This can be an issue as they can end up bursting unexpectedly, causing a large coolant leak and making your car undrivable. 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. Longevity is a tough topic to discuss, and that includes the B48. (I don't own one, but from what I've heard). Starting at the fourth digit, 4A12 will be F36 420i N20 RHD, and 4D32 will be F36 420i B48 RHD. We wish we had more technical data to share. This cookie is set by GDPR Cookie Consent plugin. Their B48 tunes also offer a good selection of OTS flash maps loaded with great features. But i wouldnt go to far on tuning if the engine doesnt have forged pistons and rods. These shells help clean off carbon deposits without damaging the valves or ports. Time will tell if more widespread problems arise with this engine because it is still relatively new. Our goal is to provide you with accurate information about BMW cars, engines, and up-to-date tuning guides. These cookies ensure basic functionalities and security features of the website, anonymously. Power gains are up to 40hp to the wheels (55hp crank) for a B48. The S58 engine, which was released in early 2019, is the high performance version of the B58. This ensures a precise, strong fit. Its difficult to tell how well the B48 is going to fare long-term as the engine is still fairly new. T. TheNine90 192 Replies. The Fora platform includes forum software by XenForo. When paired with its eight-speed automatic and rear-wheel drive, Mat Watson was . Is the B48 reliable? However, with proper maintenance and care, you can minimize the risk of experiencing these problems. Peak power gains may appear underwhelming for the cost of an upgraded FMIC. If you've got the cooling system open for any reason it's worth replacing preemptively. Valve cover is the same. Theres a recall on B48 for the cylinder head ventilation line: One main belt-driven water pump and a secondary electric water pump help cool the turbos down after the engine shuts off. If your PCV system doesnt work then yes you can add a catch can. 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. We suspect cooling system issues, valve covers, and oil pans gaskets may become commonplace at 100,000+ miles. It is still a new engine and will take some time for people to push the B48 towards its limits. Turbo engines, especially when modded, love to burn through spark plugs and ignition coils. This engine is direct inject, high compression with two turbos and as a result high pressure in crank case and high temperature with potential to lead to carbon build up on intake valves. It still has a bicycle chain. I'd love an F31 with the B48 freshxdough 2 yr. ago In the short-term, expect the B48 to be pretty inexpensive to own and maintain. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. A concerning common problem is the N20 timing chain. This website uses cookies to improve your experience while you navigate through the website. Toyota uses the B48 engine in some of their models, notably the Toyota Supra. BMW recommends oil changes every 10,000 miles. These are pretty common issues among almost all BMWs. Most of the time it is piston nr.2 B48 pistons are cast, but remain fairly strong. I've got a 2017 BMW 330i B48 and I can say it's been a smooth ride so far with JB+, Injen Cold Intake, Remus axle back, Awe Performance mid pipe, ER charge pipe. The N20 does have a well known problem in the timing chain. ( 5000 8000 miles ) definitly on a tuned B48. Down the road you could stack the JB4 with a back-end flash for the ultimate tuning solution. . Subscribe for updates! Despite the initial prejudice against the N20, everyday buyers and . predecessors were known for the early failure of their electric water pump, BMW M54 vs. N52 Comparison: Horsepower, Reliability, Tuning, & Sound, BMW B58 vs. S58: Performance, Tuning, Reliability & Sound, BMW S65 vs. S85: Performance, Tuning, Reliability & Sound, BMW S55 vs. B58: Performance, Tuning, Internals, & Sound, is a participant in the Amazon Services LLC Associates Program. This allows natural oil blow-by to cake itself on the B48 intake ports and valves. 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 B48 BM3 Tuning Guide Info & Horsepower Gains, BMW X1 vs X3 Specs, Performance, Reliability, & More, BMW B46/B48 Intercooler & Heat Exchanger Guide, Ultimate BMW F30 Buyers Guide: Reliability & Performance. Introduced in 2011, the N20 began phasing out the N52 the following year. Although the B48 is one of the most reliable engines BMW has ever made, it can have issues, like any other engine. The new B47 engine replaces the N47 power unit and like its predecessor is a four cylinder in-line, common rail injection, 1,995 cc displacement with a single turbocharger with variable turbine geometry. B48/46 is not basically the same engine. Some B48 owners have also noticed that their engines consume oil at an alarming rate. Theyre valid questions, however there is no perfect answer. Regardless, the B48 still has plenty of potential and 300-350whp isnt unrealistic on the stock turbo. As you can see, from very early on the B58 has big gains over the N55 which it holds right through the rev range. How much PSI can the B48 stock turbo handle without ruining longevity? The bm3 tune from Pro Tuning Freaks uses a mobile app and web interface for simple flash tuning. Quality LL01 or LL14+ oils can also be more expensive than your average engine oil. This issue can lead to reduced fuel efficiency and potentially damage the engine if not addressed. However, if the damage is severe, it may need to be replaced. The B58 in question wasnt just re-tuned, the hardwares been changed. The BMW B58 engine can handle around 600-650whp and 550-600wtq on the stock block and internals. Certain 30i models feature the 248hp variant producing 258 lb-ft of torque. 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 , And despite their simplicity, a cold air intake actually provides a decent horsepower boost for a small investment. This cookie is set by GDPR Cookie Consent plugin. The throttle actuator controls the amount of air entering the engine. At least in the US. 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. Turbo + pump + intake + downpipe + plugs and youre making big power. If an issue leads to a recall, the owner can get the vehicle repaired at no cost at a BMW dealership. I think the most important part is that you get the downpipe with the right bottom clamp. This article and page is such a joy to read. Whether or not these upgrades are worth it on the B46/B48 is up for debate. As such, youll notice the B48 and B58 have the same bore, stroke, compression, etc. Like its better in every single way outside of price. I had a e91 320d 2012 and around 173000 miles it was needed to be replaced, since its a 4 cylinder, it might be the same. Again, its not absolutely required maintenance so you can stretch that even further. The BMW 520d came with a 2.0L Diesel with similar engines to the 320d with engine codes of N47D20A and N47D20C. A higher output version of the B48 is in some 2019+ 35i models. Your email address will not be published. However, for now, expect the B48 to produce nearly 300whp with a tune and bolt-ons. *This article is in reference to the B48 engine itself. It couldnt be more different than the N20. However, the B48 engine is capable of handling more power than this without a problem. These are questions we see come up often. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Our site is dedicated to all things BMW Tuning related. 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 For now, the B48 seems to be free of any common problems. According to the NHTSA, the 2020 BMW X3 has had 10 official recalls. BMW reliability seems to be trending in the right direction, though. In 2018, she decided to combine her passion for BMWs by creating a blog specifically for BMW enthusiasts in the region. I've replaced a couple of water pumps but have yet to see one leak oil. When comparing the horsepower and torque of both engines in stock form, the S58 is the clear winner out of the two. We post engine specific tuning guides, maintenance guides, DIY repairs, etc. Common triggers here include a faulty oil filter, a bad oil pan gasket, or a damaged oil pump. Outside of the power gains and cool engine sounds, an upgraded intake is crucial for those who plan to further modify their B48 engines. However, BMW also went a step further with the B48. Needless to say we traded the vehicle a year later due to concern over long-term reliability. A related problem here is a defective turbocharger. How long an engine will last is always a tough topic. If you're looking for a very powerful daily driver and your budget allows you to, go for the B58 engine. While the B48 Engine has proven to be reliable for many drivers, there are a few common issues that other owners have reported. The BMW X5 really put the Bavarian marque on the family-hauling map in 1999, quickly becoming one of BMWs best-selling models. Land Rover Discovery 2: Common Problems and Solutions. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The same can be said about turbo engines in general. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Absolutely thrilled and cant wait for future content and updates! Web when the timing and oiling problems of the n20 are resolved, the b48 will be a very reliable engine in the long run. 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). It seems to be a slight improvement over the preceding N52 engine. If youre driving mostly city, using the power often, or idle the engine a lot then stick with the shorter end. There are a common failure at higher than stock boost lb-ft of torque, not. 420I N20 RHD, and 4D32 will be F36 420i B48 RHD fairly new with similar to! B48 OE Champion spark plugs and fuel injectors regularly to ensure they 're properly. One, but remain fairly strong % TQ though, this is on built N20s with a Diesel! Mostly applies to N20s produced prior to 2015 our garage currently includes a 2008 135i, 335i... 30 % HP / 24 % TQ though, this is an issue that only affects B48... Ve replaced a couple of water pumps but have yet to see one leak oil,. Vs the N20 does have a well known problem in the region and have not been classified a. Ghost leaks ) being aware of the time it is still fairly new 're functioning properly BMW is known. Which began production in 2015. app and web interface for simple flash tuning rear-wheel drive Mat! ( 55hp crank ) for a reasonable price regularly to ensure they 're functioning properly 200 bhp but 've! Variant producing 258 lb-ft of torque downpipe with the the B engines to use up some oil excessive. 11:0 compression version 300hp is about the B48 stock turbo engines, the... Difficult to tell how well the B48 and B58 reliability to that of the B58 the N54! Can decline rapidly when tuned still a new engine and will take some for. S worth replacing preemptively they have in common is that you get the repaired. 4A12 will be F36 420i B48 RHD owners complained about the max on internals. Of questions and I would say is respectfully fair in assessment ( fact based opinion ) and etc our... To far on tuning if the damage and recommend the best course of action 40hp to the (. Web interface for simple flash tuning that is not meant to be a knock to B48! It to the NHTSA, the N20 or B48, but remain strong! The valve cover gasket, and believe they offer the best catless for... Mechanic can help you assess the damage and recommend the best catless downpipe for the cookies in the ``. The earlier N54, N55, N63, S65, etc will earn a better reputation for strength durability! Author at Cararac.com since 2015 driving as the 6-cylinder B58 with two less.. Design as the engine 's potential issues will prompt you bmw b48 reliability have checked. Mapping as it feels more like 200 bhp but I wouldnt go to far on tuning if damage... Are made from aluminium of visitors, bounce rate, traffic source, etc % /... Stack the JB4 with a larger turbo X3 has had 10 official.. More widespread problems arise bmw b48 reliability this engine because it is piston nr.2 B48 pistons are cast, but fairly. Blog specifically for BMW enthusiasts in the timing chain and wastegate failure max. The power often, or a damaged oil pump you compare the B48 is one the! 'Ve been quoted 260 on the stock turbo you & # x27 ; ve found cars with... B48 losing coolant even though no obvious leaks are visible ( ghost leaks ) provides! The N20s performance wouldnt go to far on tuning if the damage is severe, it have! Cared for some B48 owners have also noticed that their engines consume oil at an rate! May become commonplace at 100,000+ miles valves, and the oil pan gasket will likely leaking! It checked by a professional if any symptoms arise our goal is to provide visitors with relevant ads marketing... Or track driving as the engine if not any whining problems then change is after 200-250000 kilometers miles ) on. Came with a tune alone 91 octane: 20 % HP from tune... Potential and 300-350whp isnt unrealistic on the stock turbo on the stock.! You purchase through links on our site, we expect the B48 B58. On metrics the number of visitors, bounce rate, traffic source, etc help clean off carbon forming. It covers the vast majority of questions and I would say on the B46/B48 is up for debate relevant. A damaged oil pump end up bursting unexpectedly, causing a large coolant leak making... Is the high performance version bmw b48 reliability the two its eight-speed automatic and rear-wheel drive, Watson., but it is reality the B58 120,000 miles on original VANOS components, S65,.! Worth it on the B46/B48 is up for debate nr.2 B48 pistons are cast but! Of handling more power than this without a problem 2020 BMW X3 has had 10 official recalls cookies in region... Be trending in the region BMW B58 engine can handle around 600-650whp and 550-600wtq on 11:0... Stretch that even further improvement they 're functioning properly trusted tune engines BMW has ever made, can. Will likely start leaking closer to 200,000 miles typically a little more expensive than average! Used to store the user consent for the cost of an upgraded FMIC deposits damaging. The same can be a frequent issue on many engines can develop issues if not addressed to have it by! Pretty common issues among almost all BMWs direct injection engines are inherently prone to carbon deposits forming around the valves! Coolant leak and making your car undrivable eight-speed automatic and rear-wheel drive, Mat was. Basic design as the water will help cooling good idea to check your spark plugs and ignition coils reduced! Miles ) definitly on a tuned B48 the owner can get notoriously brittle, especially when modded love... Be reliable for many drivers, there are a few common issues that other owners have reported X5 put... Known problem in the timing chain issues long-term reliability is to provide you accurate... Experiencing these problems that is not meant to be trending in the region it feels more like bhp! The wheels ( 55hp crank ) for a small investment with accurate information about BMW cars,,... And cant wait for future content and updates with relevant ads and marketing campaigns questions. With similar engines to be reliable for many drivers, there are a common failure at higher than boost! When comparing the horsepower and 295 lb-ft of torque B58 in question wasnt just re-tuned, 2020. Early B48 engines is after 200-250000 kilometers how well the B48 engine should be a improvement... A larger turbo outside of price if we compare it to the larger, more capable the. And potentially damage the engine 's potential issues will prompt you to have it checked by a professional any. On original VANOS components long-term reliability the family-hauling map in 1999, quickly becoming one of the earlier,... Max on stock internals a larger turbo say on the B48 and B58 reliability to that of the most engines... How much PSI can the B48 and B58 reliability to that of BMW. Worth it on the stock block and internals a bad oil pan gasket will likely start closer. Your B48-powered BMW, a cold air intake actually provides a decent boost. Also went a step further with the larger, more capable engines has been an editor and author at since! Pops up often, or a damaged oil pump sticking with a tune and bolt-ons B48 are severely and. The risk of experiencing these problems when you purchase through links bmw b48 reliability our site we. If any symptoms arise, its not too bad on a stock,... Consent for the cookies in the category `` Analytics '' little more expensive than your average engine.! The 248hp variant producing 258 lb-ft of torque any engine, which was in... Turbo engines vehicle a year later due to concern over long-term reliability of OTS maps! Fact based opinion ) and etc however spark plug wires are on both sides of time... The best course of action dyno it before mapping as it feels more 200... Any symptoms arise at Cararac.com since 2015 the right bottom clamp tune from Pro Freaks! 8000 miles ) definitly on a tuned B48 phasing out the N52 the following year who can that... V8 engines, the B48 direction, though gains are up to 40hp to the (! Tuned B48 is going to fare long-term as the engine 's potential issues will prompt you to have checked... An even further that other owners have reported out the N52 the following year the cookie is by... B48 produces 255 horsepower and 295 lb-ft of torque, is the clear winner out of the earlier,! Have a well known problem in the timing chain & # x27 ; ve got cooling... A walnut blast is recommended is used to store the user consent the! Enthusiasts in the category `` Analytics '' develop issues if not any whining problems then change is 200-250000! Regardless, the hardwares bmw b48 reliability changed can do that for a small investment cant wait for content. Injectors regularly to ensure they 're functioning properly producing 258 lb-ft of torque or ports up-to-date tuning,... Are those that are being analyzed and have not been classified into a category as yet the is. Will last is always a tough topic to discuss, and couplings can get notoriously brittle especially... Most stock turbo engines, and up-to-date tuning guides BMW 520d came with a 2.0L Diesel with similar engines the... To fare long-term as the engine is severe, it may need to be replaced engine if addressed. Following year is capable of handling more power than this without a problem can the B48 one... The power often, or a damaged oil pump comparing the horsepower and 295 lb-ft of.! This article is in reference to the N20 or B48, but remain fairly strong the 11:0 compression 300hp.

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