From 2001 to 2003, a German company produced the 2.5-liter Audi AYM 2.5 TDI engine, which was fitted on well-known models like the A4 B6, A6 C5, and Skoda Superb. This unit’s design served as a bridge between the A-series and B-series motors.
The EA330 series also includes: AFB, AKE, AKN, AYM, BAU, BDG, BDH.
Specifications
| Production years | 2001-2003 |
| Displacement, cc | 2496 |
| Fuel system | direct injection |
| Power output, hp | 155 |
| 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 3 |
| Fuel consumption, L/100 km (for Audi A4 B6 2002) — city — highway — combined |
9.7 5.3 6.8 |
| Engine lifespan, km | ~270 000 |
The engine was installed on:
- Audi A4 B6 (8E) in 2001 – 2002;
- Audi A6 C5 (4B) in 2001 – 2002;
- Skoda Superb 1 (3U) in 2001 – 2003.
Disadvantages of the Audi AYM engine
First, it’s important to note how quickly the camshaft cams and rockers wear down; a lot of engine issues are linked to Bosch VP44 electronically controlled injection pump failures;
This engine is also well-known for its frequent oil leaks, particularly from under the valve covers; turbine geometry frequently wedges from pollution on runs longer than 200,000 kilometers; and hydraulic compensators and pressure-reducing valves fail due to poor oil.