What does E90 mean on BMW?
The bmw e9x, also referred to as e90 is the fifth generation of the bmw 3 series produced from 2004-2013. Chassis codes included are bmw e90 (sedan), bmw e91 (wagon, or touring), bmw e92 (coupe), and bmw e93 (convertible). Models include bmw 325i, 325xi, 328i, 328xi, 330i, 330xi, 335i, 335xi, 335is, 335d, and m3. Among late-model 3 series, 2014 to 2018 and 2020 to 2023 models have the highest reliability ratings and the fewest problems. What are the worst bmw 3 series years? Generationally, the worst 3 series is probably the fifth-generation “e90” model built from 2005 to 2011.
Is an E90 an N54?
The N54 debuted at the 2006 Geneva Motor Show and was launched in the 335i model of the E90/E91/E92/E93 3 Series range. Following the introduction of its BMW N55 successor in 2009, the N54 began to be phased out. The final model powered by the N54 is the E89 Z4 roadster, which was produced until 2016. The N47 engine, used in BMWs from 2007 to 2014, is notorious for timing chain failures due to premature wear, often necessitating a complete engine breakdown as the chain is located at the rear of the engine.The M47 is an older-generation engine, simpler and more reliable, with a front-mounted timing chain. It is a great choice for those who value reliability and want to avoid costly repairs. The N47 is more dynamic, more fuel-efficient, and more modern, but unfortunately less reliable due to its rear-mounted timing chain.The N54 is known for its engaging driving experience and tuning potential, while the N55 boasts better fuel efficiency, emissions, and overall reliability.
What year is the most reliable E90?
The E90 330i built from 2005 to 2007 is definitely your best bet if you’re in the market for a used and reliable 3 Series. Not only does it sport the most reliable engine of all E90s, but it’s also one of the most powerful naturally-aspirated options. Oil Leaks from the Valve Cover or Oil Filter Housing One of the most common issues in BMW engines is oil leakage. The valve cover gasket and the oil filter housing gasket are two known weak points. Over time, these gaskets can become brittle and start to leak.There are three major areas where E90 BMWs leak oil. These problems plague all six-cylinder motors from this era. The oil pans, oil filter housings, and valve cover gaskets will leak if the car is not maintained properly. A leaking oil filter housing can lead to serious issues if left unaddressed.Oil Leaks. Despite the fact that it is not a problem with the newer versions of BMW, oil leaks are the most common problem you may face with BMWs. Occasionally, oil leaks from the valve corners or transmission are noticed in BWM. It may be because of a malfunctioning fuel pump.The BMW E90 platform is generally reliable but has a few common mechanical problems you should know if you consider purchasing a used E90. Oil leaks in the oil pan, filter housing, and valve cover gaskets are widespread. Ignition coils often fail, leading to misfires, and the VANOS solenoid can malfunction.
Which BMW E90 engine is best?
Among all the E90 options, the N52 engine (found in the 325i and 330i) is often considered the most reliable. Common problems of the BMW 335i include noise and vibration due to low refrigerant, engine rattle, and broken serpentine belts. Ultimately, it’s important to know the potential issues that might come with owning a BMW 335i.Some of the most prominent problems reported by BMW 328i owners include timing chain issues, fuel system failures, and electrical problems. Drivers have also complained about overheating A/C and heating systems as well as oil leaks in their BMW 328is, so be cautious if you plan on buying one.The 2012-2015 320i and 328i models with the N20 engines were prone to durability problems (timing chain issues, oil leaks and turbo longevity).
What engines to avoid in E90?
BMW E90 engines, especially those with N43 and N46 petrol units, are often prone to problems related to ignition coils and the Valvetronic system. The 2. The Durability of the BMW 320d Engine With regular maintenance, it’s not uncommon for these engines to last beyond 200,000 miles.BMW pundits and consumers commonly agree that the NA N52 is one of the greatest engines ever manufactured by the German automaker due to its extreme reliability. Even the NA N53 and smaller four-cylinder E90s are durable enough, but the same isn’t true for the 335i’s turbocharged N54 and N55 engines.Most BMWs can last between 200,000 and 250,000 miles with routine maintenance, while certain engines like the M54, N52, and B58 often exceed 300,000 miles with care. Verified examples include million-mile endurance builds and owner-driven high-mileage legends.