The 2.4-liter Audi BDW 2.4 MPI injection engine was assembled at the factory from 2004 to 2008 and installed only on the popular A6 model in the C6 body in a modification before restyling. This unit was the only engine in the line with distributed fuel injection.
The EA837 series includes: BDW, AUK, BDX, CAJA, CGWA, CGWB, CREC.
Specifications
| Production years | 2004-2008 |
| Displacement, cc | 2393 |
| Fuel system | distributed injection |
| Power output, hp | 177 |
| Torque output, Nm | 230 |
| Cylinder block | aluminum V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 81 |
| Piston stroke, mm | 77.4 |
| Compression ratio | 10.3 |
| Features | no |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | on the intake shafts |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 6.5 |
| Fuel type | petrol |
| Euro standards | EURO 4 |
| Fuel consumption, L/100 km (for Audi A6 2006) — city — highway — combined |
14.3 7.1 9.7 |
| Engine lifespan, km | ~280 000 |
The engine was installed on:
- Audi A6 C6 (4F) in 2004 – 2008.
Disadvantages of the Audi BDW engine
- The main complaints about this unit are somehow related to seizures in the cylinders.
- Another problem is the stretching of the timing chains and the breakdown of their tensioners.
- Phase regulators and ignition coils are not the most reliable.
- Often the dampers in the intake turn sour, and the entire manifold has to be changed.
- After 100,000 km, lubricant consumption often appears due to wear of rings and caps.
