What year is the N47D20A?
BMW 1 SERIES 2. DIESEL N47D20A 2007 – 2011 ENGINE SUPPLY AND FITTING. BMW timing chains have snapped on a range of models across the 1, 3 & 5 Series, most commonly affecting the N47 diesel. We also rebuild M57 & N57 diesel engines, BMW petrol engines & also BMW Minis. From 2015 to the present, the B47 diesel engine also suffers with an inherent ‘bottom-end’ failure.The issue is particularly common in BMW models with N47 and N57 diesel engines, typically found in: BMW 1 Series (E81, E82, E87, E88) – 2007-2013. BMW 3 Series (E90, E91, E92, E93) – 2007-2013. BMW 5 Series (F10, F11) – 2010-2016.The N47 engine’s technological features contributed significantly to BMW’s diesel engine development: Efficient Variable Geometry Turbocharging: Improved low-end torque and throttle response. Double-VANOS: Enhanced fuel economy and reduced emissions.Problematic BMW Engines with a Reputation for Breaking Down Some specific engine issues have been observed in the BMW 320d 2. Diesel, 520D 2. Diesel, and X5 330D 3. Diesel variants. The BMW 320d 2. Diesel engines, particularly the N47D20A and N47D20C variants, have been prone to timing chain problems.
Which N47 engine fails?
The issue predominantly affects early production n47 engines manufactured before 2008, though later variants remain susceptible. Failure typically occurs between 70,000 and 150,000 miles, regardless of maintenance history, suggesting fundamental design weaknesses rather than purely maintenance-related problems. Certain bmw diesel models, notably the n47 engine, are notorious for timing chain issues. Problem: the timing chain can stretch and, in extreme cases, break prematurely due to poor lubrication, design flaws, or lack of maintenance. This can lead to catastrophic engine damage if not addressed.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.N47 Timing Chain Issue The issue applies to all applications and power variants of the engine produced from 01. The most seriously affected units which require the most extensive repairs were produced from 01.As with the four-cylinder N47 the N57 engine is prone to excessive timing chain wear which can lead to premature failure.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.
How reliable is the N47D20?
Here are some of the most common problems associated with the N47D20C engine: Timing Chain Failure: The N47D20C engine has been plagued by timing chain issues. Premature wear and stretching of the timing chain can occur, leading to engine misfires, rattling noises, and even engine failure. BMW replaced the M57 with the N57 in 2008. While the newer engine brought more power, better emissions compliance, and lighter weight, it also came with known issues: timing chain failures being the most famous. The M57 engine, by contrast, is widely considered more reliable and easier to work on.Here are some of the most common problems associated with the N47D20C engine: Timing Chain Failure: The N47D20C engine has been plagued by timing chain issues. Premature wear and stretching of the timing chain can occur, leading to engine misfires, rattling noises, and even engine failure.BMW replaced the M57 with the N57 in 2008. While the newer engine brought more power, better emissions compliance, and lighter weight, it also came with known issues: timing chain failures being the most famous. The M57 engine, by contrast, is widely considered more reliable and easier to work on.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.
Why is B47 better than N47?
B47 vs N47: Engine Overview BMW introduced it as the successor to the N47, offering improved fuel efficiency, better emission standards, and a smoother driving experience. The B47 earns praise for its modern design, featuring better insulation, fewer moving parts, and an advanced turbocharging system. The M57 is BMW’s most bulletproof diesel, found in the E39 530d and X5. Many use engine finder services to locate recondition engines for these models, especially BMW X5 engines.Models equipped with inline-six engines like the M54, N52, or B58—and diesel workhorses like the M57 or B57—frequently reach 300,000 miles or more. From million-mile E30s tested under lab conditions to 500,000+ mile M5s driven daily, the high-mileage BMW isn’t a myth—it’s a well-documented reality.Which BMW engines are the most durable? Engines such as the M54 and N52 inline-six are known for their reliability and longevity, often running smoothly for over 200,000 miles when properly maintained.The b57d30b is widely considered the most reliable bmw diesel engine today. It’s a 3. L inline-six with modern technology, a long-lasting timing chain design, and low failure rates. It’s built for high mileage and smooth power delivery, making it perfect for daily use, long trips, and even towing.The F30 BMW 3 Series (2012-2019) It strikes a perfect balance between sporty handling, luxury features, and long-term reliability. Some generations of the BMW 3 series are more reliable than others; however, the F30 generation of the BMW 3 series has the best combination of modern amenities and reliability.