The 4.2-liter diesel engine Audi BTR or Q7 4.2 TDI was produced from 2007 to 2009 and was installed only on the first generation of the popular Q7 crossover before its restyling. A similar diesel engine under the hood of A8 sedans in the back of D3 has its own BVN index.
The EA898 series also includes: AKF, ASE, BTR, CKDA, CCGA, CZAC, DHVA.
Specifications
| Production years | 2007-2009 |
| Displacement, cc | 4134 |
| Fuel system | Common Rail |
| Power output, hp | 326 |
| Torque output, Nm | 760 |
| Cylinder block | cast iron V8 |
| Block head | aluminum 32v |
| Cylinder bore, mm | 83 |
| Piston stroke, mm | 95.5 |
| Compression ratio | 16.4 |
| Features | intercooler |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | no |
| Turbocharging | Garrett GTB1749LVK |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 9.5 |
| Fuel type | diesel |
| Euro standards | EURO 4 |
| Fuel consumption, L/100 km (for Audi Q7 2008) — city — highway — combined |
14.9 8.9 11.1 |
| Engine lifespan, km | ~350 000 |
| Weight, kg | 255 |
The engine was installed on:
- Audi Q7 1 (4L) in 2007 – 2009.
Disadvantages of the Audi BTR engine
- This is a very reliable diesel engine and problems with it only occur at high mileage;
- A modern fuel system with piezo injectors does not tolerate bad fuel;
- Saving on lubrication here greatly reduces the life of turbines and hydraulic lifters;
- After 200 – 250 thousand km, timing chain replacement may be required.
