The 2.5-liter Audi AYM 2.5 TDI engine was produced by a German company from 2001 to 2003 and was installed on such popular concern models as the A4 B6, A6 C5, and also the Skoda Superb. This unit, in its design, was transitional between the motors of the A-series and B-series.
EA330 family: 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 of all, it is worth noting the very rapid wear of the camshaft cams and rockers;
- Many engine problems are associated with failures of the Bosch VP44 electronically controlled injection pump;
- This engine is also famous for frequent oil leaks, especially from under the valve covers;
- On runs over 200 thousand km, turbine geometry often wedges from pollution;
- Hydraulic compensators and pressure reducing valves fail from bad oil.
Frequently asked questions about the Audi AYM
How much power does the Audi AYM make?
The Audi AYM develops 155 hp and 310 Nm of torque.
How much oil does the Audi AYM take and which one?
Engine oil capacity: 6.0 liters. Recommended oil: 5W-30.
Does the Audi AYM have a timing belt or chain?
The Audi AYM uses a timing belt.
Is the Audi AYM turbocharged?
Yes, the Audi AYM is turbocharged (VGT).
Does the Audi AYM need valve clearance adjustment?
No, the Audi AYM has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Audi AYM last?
The typical lifespan of the Audi AYM is ~270 000 km with proper maintenance.
What is the fuel consumption of the Audi AYM?
Audi A4 B6 2002: city 9.7, highway 5.3, combined 6.8 L/100 km.
What cars was the Audi AYM installed on?
Audi A4 B6 (8E) in 2001 - 2002; Audi A6 C5 (4B) in 2001 - 2002; Skoda Superb 1 (3U) in 2001 - 2003.
What are the common problems of the Audi AYM?
First of all, it is worth noting the very rapid wear of the camshaft cams and rockers. Many engine problems are associated with failures of the Bosch VP44 electronically controlled injection pump. All known problems.
