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.
EA898 family: 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.
Frequently asked questions about the Audi BTR
How much power does the Audi BTR make?
The Audi BTR develops 326 hp and 760 Nm of torque.
How much oil does the Audi BTR take and which one?
Engine oil capacity: 9.5 liters. Recommended oil: 5W-30.
Does the Audi BTR have a timing belt or chain?
The Audi BTR uses a timing chain.
Is the Audi BTR turbocharged?
Yes, the Audi BTR is turbocharged (Garrett GTB1749LVK).
Does the Audi BTR need valve clearance adjustment?
No, the Audi BTR has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Audi BTR last?
The typical lifespan of the Audi BTR is ~350 000 km with proper maintenance.
What is the fuel consumption of the Audi BTR?
Audi Q7 2008: city 14.9, highway 8.9, combined 11.1 L/100 km.
What cars was the Audi BTR installed on?
Audi Q7 1 (4L) in 2007 - 2009.
What are the common problems of the Audi BTR?
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. All known problems.
