Yes, it's expensive to maintain a 3-Series BMW once it's outside of the factory or CPO warranty. Stick with known, quality oils. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Its built on the same basic design as the 6-cylinder B58 with two less cylinders. Mini Cooper S Mods Summary This is a tough one. However, given the nature of turbo engines, the N20 will likely be a bit more expensive in regards to standard maintenance. Additionally, the N20 was tasked with replacing BMWs wildly successful inline 6 engines. Longevity is a tough topic to discuss, and that includes the B48. So far, the B48 appears the more reliable engine. Yes, we believe the BMW B48 is a pretty reliable engine. Though, these issues usually dont pop up until 80,000 100,000+ miles. B48 is more reliable, smoother, and refined than the N20, and generally better. Again, were looking at just the engine here and ignoring the chassis, electronics, etc. Quality LL01 or LL14+ oils can also be more expensive than your average engine oil. Point is standard maintenance isnt the cheapest. Stage 1 91 octane: up to 14% HP / 26% TQ They power 20i, 25i, 28i, and 30i models; a large percentage of all BMW models. The B48 is also a seemingly reliable engine thus far. However, the valve cover gasket, and the oil pan gasket will likely start leaking closer to 200,000 miles. Under the hood of the Toyota Supra 2.0 is BMW's B48 engine, which packs 258 horsepower and 295 lb-ft of torque. Not too many N20 owners are truly pushing the limits. The Fora platform includes forum software by XenForo. Great read. Its still early in the world of tuning the B48. Both have the same specs on paper so I am not sure whats the difference. Be wary of white smoke coming out of the exhaust as this could indicate that the car is burning coolant. BMW reliability seems to be trending in the right direction, though. Yes, the B48 is a reliable engine, especially if we compare it to the N20 which had major timing chain issues. alex if not any whining problems then change is after 200-250000 kilometers. Proper installation is essential to ensure that your lights do not interfere with other drivers. These can range in cost from a few hundred dollars to several thousand dollars to fix. 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). For parts wise, a B46 and B48 will be exactly the same. They did tweak the design a little bit, but its still a testament to the reliability of the B48. If you notice that you have to add oil more frequently than usual, it could be a sign of an issue with the engine's seals or rings. She has had the car since new and it now has around 70k km on. In this section, well break down the above maintenance. FBO B48 stands for full bolt-on. Submit! The 330e has the B48B20B and the 530e has the B48B20A. Oil changes are important on these if you want max reliability. 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. On paper, the B48 should be a bit stronger and more capable than the N20, especially the upgraded 35i variant. It also helps prevent corrosion. However, many tuned BMWs run the NGK 97506 spark plugs with great success. If youre in it for longevity then we think its a good idea to change the coolant every 80,000 miles or so. Nowack (SAE SN) test a bit lower with higher viscosity oil. It is certain that the B48 puts BMW ahead in the turbocharged 4-cylinder engine world. She is a proud owner of a BMW M3 and has been an active member of the BMW Motorcycle Owners of America (BMW MOA) for many years. BMW recommends oil changes every 10,000 miles. For several people, BMW is the manufacturer to look to for dependability and of course, sleek vehicles. N20 Stock, Read More BMW N20 Stock Turbo Max BoostContinue, We believe upgraded front mount intercoolers (FMICs) are one of the most under-rated mods for the BMW N20. The B48 top mount air-to-water intercooler uses a front mount heat exchanger to cool charge air temps. One such reservation is about the B48 engine. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. B48 BMS Dyno: 230.68 hp, BM3 on N20 Your email address will not be published. Our team of BMW experts relies on various sources of information plus personal knowledge about automotive topics and technical concepts. How much HP can a B48 handle? Ignition coils also wear pretty quickly on turbo engines like the B48. The cookie is used to store the user consent for the cookies in the category "Performance". A concerning common problem is the N20 timing chain. Toyota uses the B48 engine in some of their models, notably the Toyota Supra. Save my name, email, and website in this browser for the next time I comment. The B48 also has drop-forged cracked connecting rods. Some of it simply comes down to the luck of the draw, maintenance, etc. If you do long highway drives often then you can get away with the higher 8,000 or even 10,000 mile OCI. Producing 302 horsepower, the 35i variant receives a plethora of internal upgrades alongside a larger turbo. However, the B48 engine is capable of handling more power than this without a problem. The B48 is primarily found in BMW models with the ending badge numbers of 20i, 25i, 28i, and 30i. Get the turbo oil line leak addressed if your engine is affected, and keep an eye out for possible coolant leaks and the B48 will power your BMW for thousands of miles. Its working for the B58, though. However, we believe it is a step in the right direction. 1. As with most 3 series, the F30 is a great success and all around fun, sporty chassis. Regular maintenance and keeping an eye on engine performance can also help to prevent these issues from occurring. As with the N20, the B48 comes slightly underrated from the factory. At least when you compare the B48 and B58 reliability to that of the earlier N54, N55, N63, S65, etc. While this engine features improved features like a tougher crankshaft and modified pistons, it's not without shortcomings. Throw a few bolt-ons and some E85 in the mix and youve got an engine capable of pushing upwards of 300whp. Theres no right answer, but in general the B58 should last as long as youre willing to continue repairs and standard maintenance. One of the biggest factors that can affect the cost of repairing your BMW B48 engine is the severity of the issue. The B46 is the Super Ultra Low Emissions spec (SULEV) and that is the standard engine in the US market. 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. Like its better in every single way outside of price. Nevertheless, as the engine puts on more miles, users may continue to detect more issues and report them. It is a vast improvement over its predecessor in terms of efficiency, power, and reliability. The lower-spec version produces 473 hp at 6,250 rpm and 443 lb-ft of torque at 2,600-5,950 rpm. It's still a newer engine, so time will tell if more common issues develop down the road. To fix this issue, you'll need to diagnose the root cause and replace the faulty component. My wife and I purchased an X3 back in Feb 2016. "Emission System Problem" in Honda Civic - What Does This Mean. Expect standard maintenance to be a bit pricier than average if youre coming from a naturally aspirated or non-BMW engine. It's still a newer engine, so time will tell if more common issues develop down the road. Most 30i models come in at 252-258 horsepower. The BMW B58 engine can handle around 600-650whp and 550-600wtq on the stock block and internals. Some have issues with coolant loss. We wish we had more technical data to share. Making the move back to a mechanical water pump was the right move as predecessors were known for the early failure of their electric water pump. No longer is there a specific California version or a percentage of sales as the SULEV. 11.0:1 compression ratio. Save my name, email, and website in this browser for the next time I comment. Thats it. 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. I'd love an F31 with the B48 freshxdough 2 yr. ago Bimmerly is a hub for BMW enthusiasts. As per the N20, the block and head are made from aluminium. In this guide, we will discuss the top 5 most reliable BMW engines ever. The larger B58 engine also overshadows the B48 for tuning potential. I have done so far 36000 miles in my 320i b48 and it has been faultless. However, for now, expect the B48 to produce nearly 300whp with a tune and bolt-ons. However, theyre cheap repairs for the DIY crowd (though time consuming repairs). Installed bootmod3 stage 1 93 on it this weekend. 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 There is still a lot of time, development, and testing, Read More BMW B48 Upgraded Turbo GuideContinue, At this point, BMW has been in the compact SUV game for nearly a decade. In this guide, we will discuss, Read More BMW B48 Charge Pipe Upgrade GuideContinue, At this point, BMW has been in the compact SUV game for nearly a decade. Some B48 and B58 owners even go for thicker 0W-40 and 5W-40 oils. 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. However, the B48 air-to-water intercooler is highly effective on the stock turbo. Its also in some Mini models along with the Toyota Supra. SunshineF32 4 mo. A faulty actuator can cause this, leading to reduced engine power and potentially damaging the turbo itself. Worry not, though. 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. The B48 has a split cooling system with two water pumps. One of the most common reliability concerns with the B48 is coolant loss. By / may 31, 2022 may 31, 2022 although the n20 is a reliable engine overall , the earlier models are plagued with timing. While BMW quotes 241 horsepower to the crank, testing shows the stock N20 is closer to 230whp. However, keep in mind that attempting to repair your engine on your own can be risky and could potentially result in further damage if not done correctly. In this guide, we will discuss the many benefits of running an upgraded, Read More BMW N20 Upgraded FMIC GuideContinue, What is the max boost the B48 turbo can handle? A modest tune and bolt-ons should be very safe. However, some B48 engines have experienced issues with the tensioner, which can cause the chain to become loose and lead to engine damage. Otherwise, the N20 is plagued by typical BMW issues. Another representative of the modular family, the BMW B48 engine comes in the shape of a more compact four-banger. Seeing online reports from owners that it start causing issue, Correct link to the recall. 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). 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. As such, the B48 does not use a traditional FMIC. This and a good wastegate are what Im keeping an eye on. Definitely a sound improvement for the B48. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Stage 1 91 octane: 16%HP / 20%TQ I will take a picture soon! Or once a year whichever comes first. Add more bolt-ons and mix in some aggressive driving and B48 spark plugs may require changing every 15,000 miles. Explore Our Forums. B48s with tunes and bolt-on mods may consider running more expensive, high-end racing oils. Overall, it is a reliable engine with a low maintenance cost. A related problem here is a defective turbocharger. My guess is that the G20 will prove to be very reliable too. Following the N20, BMWs B48 packs a solid punch for a 2.0L inline 4. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. It is a well maintained one at 130k miles. Were big fans of the JB4 as a starting tune since it allows precise boost control and lots of possibilities. This cookie is set by GDPR Cookie Consent plugin. BMW B58 Engine. Stage 1 93 octane: 18%HP / 22%TQ We recommend switching to these spark plugs if youre pushing the limit of the B48 turbo or upgrade the turbo. However, the B48 doesnt receive much recognition due to the larger, more powerful 6-cylinder engines. It is a rather serious issue as its a costly repair, and may cause severe engine damage in rare cases. The lower level variants actually gain way more than the N20. These shells help clean off carbon deposits without damaging the valves or ports. The B series engines saw a move to an even further undersquare design. Our goal is to provide you with accurate information about BMW cars, engines, and up-to-date tuning guides. However, the higher horsepower B48 in BMW 35i models sees a drop to 9.5:1 compression. Its advertised power output is definitely underrated with 93+ octane fuel. We recommend the following B48 spark plug replacement intervals: Some of this also depends on your driving habits. 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Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Bimmerly. You can get away with the B48 engine is the Super Ultra Low Emissions spec ( SULEV ) and includes... Engine damage in rare cases of white smoke coming out of the B48 is primarily found in 35i! Information plus personal knowledge about automotive topics and technical concepts BMWs run NGK! Sees a drop to 9.5:1 compression detect more issues and report them inline 6 engines to.! Early in the US market 530e has the B48B20B and the oil pan gasket will likely leaking... Gdpr cookie consent plugin throw a few hundred dollars to fix the of! Of their models, notably the Toyota Supra rather serious issue as its a costly repair, and their... More expensive, high-end racing oils control and lots of possibilities has been faultless pop up 80,000.

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