Engine Audi BDW

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.


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
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.

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