From 1997 to 1999, the company assembled the 2.5-liter Audi AFB 2.5 TDI diesel engine, which was installed on popular models like the Volkswagen Passat B5, A4 B5, A6 C5, and A8 D2. The diesel engine’s index was changed to AKN after it was upgraded to more contemporary environmental standards EURO 3.
The EA330 series also includes: AFB, AKE, AKN, AYM, BAU, BDG, BDH.
Specifications
| Production years | 1997-1999 |
| Displacement, cc | 2496 |
| Fuel system | direct injection |
| Power output, hp | 150 |
| Torque output, Nm | 310 |
| Cylinder block | cast iron V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 78.3 |
| Piston stroke, mm | 86.4 |
| Compression ratio | 19.5 |
| 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 2 |
| Fuel consumption, L/100 km (for Audi A6 C5 1998) — city — highway — combined |
9.9 5.3 7.0 |
| Engine lifespan, km | ~250 000 |
The engine was installed on:
- Audi A4 B5 (8D) in 1997 – 1999;
- Audi A6 C5 (4B) in 1997 – 1999;
- Audi A8 D2 (4D) in 1997 – 1999;
- Volkswagen Passat B5 (3B) in 1998 – 1999.
Disadvantages of the Audi AFB engine
The camshaft cams and rockers’ quick wear is the most well-known issue;
Second, there are issues with the Bosch VP44 electronically operated high-pressure fuel pump;
Crankcase ventilation filters clog easily and require frequent cleaning;
The antiquated film-type MAF is characterized by poor engine reliability;
Oil leaks can occur from under the valve cover and at the block’s joints with the sump.