Engine Audi BDG

The 2.5-liter Audi BDG 2.5 TDI diesel engine was produced by the concern from 2003 to 2008 and was installed on such popular company models as the A4 B7, A6 C5 or Volkswagen Passat B5. Thanks to the installation on the Skoda Superb, this diesel engine was assembled the longest in its family.

The EA330 series also includes: AFB, AKE, AKN, AYM, BAU, BDG, BDH.


Production years 2003-2008
Displacement, cc 2496
Fuel system direct injection
Power output, hp 163
Torque output, Nm 350
Cylinder block cast iron V6
Block head aluminum 24v
Cylinder bore, mm 78.3
Piston stroke, mm 86.4
Compression ratio 18.5
Features 2 x DOHC
Hydraulic lifters yes
Timing drive belt
Phase regulator no
Turbocharging VGT
Recommended engine oil 5W-30
Engine oil capacity, liter 6.0
Fuel type diesel
Euro standards EURO 4
Fuel consumption, L/100 km (for Audi A4 2005)
— city
— highway
— combined
Engine lifespan, km ~320 000

The engine was installed on:

  • Audi A4 B6 (8E) in 2003 – 2004; A4 B7 (8E) in 2004 – 2005;
  • Audi A6 C5 (4B) in 2003 – 2004;
  • Skoda Superb 1 (3U) in 2003 – 2008;
  • Volkswagen Passat B5 (3B) in 2003 – 2005.

Disadvantages of the Audi BDG engine

  • All the most common problems of this diesel engine are associated with failures of the VP44 injection pump;
  • Several cases of destruction of hollow camshafts have been described on specialized forums;
  • Also, grease leaks very often here, and especially from under the valve covers;
  • On high mileage, owners often encounter a wedge of turbine geometry;
  • Due to poor oil, pressure reducing valves and hydraulic lifters wear out here.

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