The 2.5-liter Audi AEL 2.5 TDI diesel engine was produced by the company from 1994 to 1997 and was installed on only one, but very popular model: the A6 in the C4 body. This 5-cylinder diesel engine was distinguished from its counterparts in the series by a more powerful turbine and nozzles.
EA381 family: CN, AAS, AAT, 1T, AEL, AHD, BJK, BJM.
Specifications
| Production years | 1994-1997 |
| Displacement, cc | 2460 |
| Fuel system | direct injection |
| Power output, hp | 140 |
| Torque output, Nm | 290 |
| Cylinder block | cast iron R5 |
| Block head | aluminum 10v |
| Cylinder bore, mm | 81 |
| Piston stroke, mm | 95.5 |
| Compression ratio | 20.5 |
| Features | SOHC, intercooler |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | yes |
| Recommended engine oil | 5W-40 |
| Engine oil capacity, liter | 5.2 |
| Fuel type | diesel |
| Euro standards | EURO 2 |
| Fuel consumption, L/100 km (for Audi A6 1996) — city — highway — combined |
8.7 5.6 7.0 |
| Engine lifespan, km | ~450 000 |
| Weight, kg | 210 |
The engine was installed on:
- Audi A6 C4 (4A) in 1994 – 1997.
Disadvantages of the Audi AEL engine
- This diesel engine is considered reliable and most of its problems are due to old age;
- Most owners are concerned about the problems associated with the Bosch VE37 electronic injection pump;
- Once every 100,000 km, an expensive replacement of the timing belt awaits you, and when it breaks, the valves bend;
- The cylinder head is afraid of overheating, carefully monitor the cooling system;
- After 200,000 km, attention is often required: turbine, mass air flow sensor and hydraulic lifters.
Frequently asked questions about the Audi AEL
How much power does the Audi AEL make?
The Audi AEL develops 140 hp and 290 Nm of torque.
How much oil does the Audi AEL take and which one?
Engine oil capacity: 5.2 liters. Recommended oil: 5W-40.
Does the Audi AEL have a timing belt or chain?
The Audi AEL uses a timing belt.
Is the Audi AEL turbocharged?
Yes, the Audi AEL is turbocharged.
Does the Audi AEL need valve clearance adjustment?
No, the Audi AEL has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Audi AEL last?
The typical lifespan of the Audi AEL is ~450 000 km with proper maintenance.
What is the fuel consumption of the Audi AEL?
Audi A6 1996: city 8.7, highway 5.6, combined 7.0 L/100 km.
What cars was the Audi AEL installed on?
Audi A6 C4 (4A) in 1994 - 1997.
What are the common problems of the Audi AEL?
This diesel engine is considered reliable and most of its problems are due to old age. Most owners are concerned about the problems associated with the Bosch VE37 electronic injection pump. All known problems.
