Only the well-liked A6 model had the 2.4-liter Audi BDW 2.4 MPI injection engine installed in the C6 body prior to restyling. The engine was assembled at the factory between 2004 and 2008. The only engine in the line with distributed fuel injection was this one.
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
Seizures in the cylinders are a major source of complaints regarding this unit.
The stretching of the timing chains and the failure of their tensioners are additional issues.
Ignition coils and phase regulators are not the most dependable.
The intake dampers frequently become sour, necessitating the replacement of the entire manifold.
Lubricant consumption frequently manifests after 100,000 kilometers as a result of ring and cap wear.