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.
EA330 family: AFB, AKE, AKN, AYM, BAU, BDG, BDH.
Specifications
| 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 |
9.6 5.3 6.8 |
| 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.
Frequently asked questions about the Audi BDG
How much power does the Audi BDG make?
The Audi BDG develops 163 hp and 350 Nm of torque.
How much oil does the Audi BDG take and which one?
Engine oil capacity: 6.0 liters. Recommended oil: 5W-30.
Does the Audi BDG have a timing belt or chain?
The Audi BDG uses a timing belt.
Is the Audi BDG turbocharged?
Yes, the Audi BDG is turbocharged (VGT).
Does the Audi BDG need valve clearance adjustment?
No, the Audi BDG has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Audi BDG last?
The typical lifespan of the Audi BDG is ~320 000 km with proper maintenance.
What is the fuel consumption of the Audi BDG?
Audi A4 2005: city 9.6, highway 5.3, combined 6.8 L/100 km.
What cars was the Audi BDG 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.
What are the common problems of the Audi BDG?
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. All known problems.
