Engine Audi AUK

The company assembled the 3.2-liter 24-valve Audi AUK 3.2 FSI engine from 2004 to 2010 and installed it on such popular models of the German concern as the A4 B7, A6 C6 or A8 D3. This power unit has several analogues at once with other BKH, BPK and BYU indices.

The EA837 series includes: BDW, AUK, BDX, CAJA, CGWA, CGWB, CREC.


Production years 2004-2010
Displacement, cc 3123
Fuel system direct injection
Power output, hp 256
Torque output, Nm 330
Cylinder block aluminum V6
Block head aluminum 24v
Cylinder bore, mm 84.5
Piston stroke, mm 92.8
Compression ratio 12.5
Features no
Hydraulic lifters yes
Timing drive chain
Phase regulator on all 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 2005)
— city
— highway
— combined
Engine lifespan, km ~260 000

The engine was installed on:

  • Audi A4 B7 (8E) in 2004 – 2009;
  • Audi A6 C6 (4F) in 2004 – 2008;
  • Audi A8 D3 (4E) in 2005 – 2010.

Disadvantages of the Audi AUK engine

  • The most widespread problem of units of this series are seizures in the cylinders.
  • The pistons here are prone to the occurrence of rings and oil burns, they are usually changed to forged.
  • Also here, timing chains are very often stretched and their tensioners fail.
  • Not famous for reliability and a complex intake system with two sets of dampers.
  • Intake valves quickly overgrow with soot and compression drops in the engine cylinders.

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