The company assembled the 4.2-liter Audi BFM or A8 D3 4.2 quattro engine from 2002 to 2006 and installed it only on all-wheel drive modifications of the famous A8 sedan in the D3 body. There was a version of this power unit with a volume of 3.7 liters and its own BFL index.
The EA824 series includes: AEW, ABZ, BFL, BFM, AXQ, BVJ, CDRA, BAR, CRDB, CEUA.
Specifications
| Production years | 2002-2006 |
| Displacement, cc | 4172 |
| Fuel system | distributed injection |
| Power output, hp | 335 |
| Torque output, Nm | 430 |
| Cylinder block | aluminum V8 |
| Block head | aluminum 40v |
| Cylinder bore, mm | 84.5 |
| Piston stroke, mm | 93 |
| Compression ratio | 11.0 |
| Features | no |
| Hydraulic lifters | yes |
| Timing drive | belt & 2 chains |
| Phase regulator | yes |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 7.5 |
| Fuel type | petrol |
| Euro standards | EURO 4 |
| Fuel consumption, L/100 km (for Audi A8 quattro 2004) — city — highway — combined |
17.5 8.7 11.9 |
| Engine lifespan, km | ~300 000 |
The engine was installed on:
- Audi A8 D3 (4E) in 2002 – 2006.
Disadvantages of the Audi BFM engine
- Despite the aluminum block, seizures in the cylinders are rare here.
- However, with savings on oil and frequent overheating, they will not keep you waiting.
- Most of the problems here are delivered by unreliable hydraulic timing chain tensioners.
- Try to monitor the condition of the timing belt, or if it breaks, the valves will bend.
- Oil leaks are also common, especially at the junction of the engine with the gearbox.
