Written by:jacks
When BMW launched the B47 engine in 2014, it was more than just a successor to the outgoing N47 – it marked a shift toward modular engine design, better emissions compliance, and improved reliability. Today, the BMW B47 2.0-litre diesel engine powers a huge range of BMW and MINI models, from the compact 1 Series to the luxury 7 Series.
In this article, we’ll give you a detailed breakdown of the BMW B47 engine, including its variants, power output, model applications, reliability, and everything in between – whether you’re researching your next car or looking to understand what’s under your bonnet.
What Is the BMW B47 Engine?
The BMW B47 is a 1,995cc inline-4 turbocharged diesel engine first introduced in 2014. It belongs to BMW’s modular engine family (alongside the B38, B48, and B57) and was designed to replace the ageing N47. It’s used across a wide array of models in various output levels and configurations, including front-wheel, rear-wheel, and all-wheel drive platforms.
B47 Engine Overview:
| Specification | Details |
| Engine Code Family | B47 |
| Fuel Type | Diesel |
| Displacement | 1,995cc |
| Configuration | Inline-4 |
| Power Output | 114–190 bhp |
| Induction | Turbocharged |
| Transmission | Manual or Automatic |
| Years Active | 2014 – Present |
BMW B47 Engine Variants
The B47 engine family is split into multiple sub-variants to suit different layouts (longitudinal vs. transverse), platforms, and power requirements.
B47A (D20A)
Used from 2014 onwards in models such as the 118d, 120d, 218d, 220d, 318d, 320d, 418d, 420d, 518d, 520d, X3 1.8d, X3 2.0d, and X4 20d. It’s compatible with chassis codes including F20, F21, F22, F23, F30, F31, F32, F33, F10, F11, F07, G20, G21, G30, G31, G05, G11, F60, F25, and F26.
B47B (D20B)
Introduced in 2015 and used in higher-output applications like the 125d, 225d, 325d, 425d, 525d, and X5 2.5d. Found in chassis such as F20, F21, F30, F31, F32, F33, F10, F11, and F15.
B47A (C20A)
A transverse version of the B47 used in front-wheel-drive-based platforms. Seen in models like the 218d, 220d, MINI Cooper D, X1, and X2. Compatible with F45, F46, F39, F60, F54, and F48 chassis.
B47C (C20B)
An updated transverse layout used across similar platforms as the C20A variant, with additional use in the F40 1 Series. Commonly found in the 218d, 220d, MINI Cooper D, and various X1/X2 models.
Power Output Breakdown
The B47 engine comes in several tuning levels to suit various performance and efficiency goals.
| Variant | Power Output | Typical Models |
| B47 114 bhp | 114 BHP | 116d, 216d, MINI One D |
| B47 148 bhp | 148 BHP | 118d, 218d, 318d |
| B47 190 bhp | 190 BHP | 120d, 220d, 320d, 520d, X3 20d |
| B47 High Output | 221–228 BHP | 125d, 225d, 325d, 425d, 525d |
B47 vs. N47: What’s Improved?
The B47 was built to improve on several known issues of its predecessor, the BMW N47. Key upgrades include:
- Revised timing chain positioning and durability (no more rear-of-engine design flaws)
- Euro 6 emissions compliance with reduced NOx and particulate levels
- More refined operation and lower engine noise
- Better fuel economy and power-to-weight balance
These updates make the B47 not only more reliable but also more refined and emissions-friendly, especially in urban and fleet applications.
Common Issues With the B47 Engine
While the B47 is more robust than the N47, some common issues can still arise, particularly with higher mileage examples or those that miss service intervals.
EGR Valve or Cooler Problems – Known to clog or leak, especially with short-distance driving.
DPF Blockages – A common issue in urban cars. Caused by insufficient regen cycles due to low-speed driving.
Timing Chain Rattle – Far less common than on the N47, but early build B47s may still suffer chain stretch over time if not maintained.
Glow Plug or Sensor Failures – Typical of modern diesels, often showing up during colder seasons.
Routine maintenance and the use of proper engine oil are essential to keeping the B47 running smoothly over the long term.
B47 Chassis & Model Compatibility Overview
| Chassis Codes | Series | Common Models |
| F20, F21, F40 | 1 Series | 116d, 118d, 120d |
| F22, F23 | 2 Series Coupe/Convertible | 218d, 220d, 225d |
| F45, F46 | 2 Series Active/Gran Tourer | 216d, 218d, 220d |
| F30, F31, G20, G21 | 3 Series | 316d, 318d, 320d, 325d |
| F32, F33 | 4 Series | 418d, 420d, 425d |
| G30, G31, F10, F11 | 5 Series | 518d, 520d, 525d |
| G11 | 7 Series | 730d (in some markets) |
| F48, F39 | X1, X2 | 18d, 20d |
| F25, F26, G05 | X3, X4, X5 | X3 2.0d, X4 20d, X5 2.5d |
| F54, F60 | MINI Clubman, Countryman | Cooper D, Cooper SD |
Final Thoughts
The BMW B47 engine is one of the most widely used and refined diesel engines BMW has ever produced. It balances everyday drivability with strong performance and efficiency, making it ideal for everything from compact hatchbacks to long-distance cruisers. With proper maintenance, the B47 is a dependable, modern diesel powertrain that builds on lessons learned from the N47.
Need a Used BMW B47 Engine, Repairs or Servicing?
At Quarry Motors, we specialise in providing used BMW engines at a fraction of dealership costs, alongside diagnostics and repairs – including all BMW B47 engine variants. Whether you need a replacement, you’re experiencing EGR issues, DPF warnings, or just want your car running at its best, our experienced team is here to help.
Contact Quarry Motors today for expert BMW servicing and repairs backed by years of hands-on experience.
