The 4.0-liter bi-turbo diesel engine Audi DHVA was produced only from 2019 to 2020 and was installed on particularly powerful modifications of the popular Audi SQ8 4.0 TDI crossover. A similar engine was installed on the Audi SQ7 TDI under the designation DMVA and on the Audi A8 60 TDI as CVXB.
EA898 family: AKF, ASE, BTR, CKDA, CCGA, CZAC, DHVA.
Specifications
| Production years | 2019-2020 |
| Displacement, cc | 3956 |
| Fuel system | Common Rail |
| Power output, hp | 435 |
| Torque output, Nm | 900 |
| Cylinder block | cast iron V8 |
| Block head | aluminum 32v |
| Cylinder bore, mm | 83 |
| Piston stroke, mm | 91.4 |
| Compression ratio | 16.0 |
| Features | AVS, MHEV |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | no |
| Turbocharging | Bi-Turbo + EAV |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 9.1 |
| Fuel type | diesel |
| Euro standards | EURO 6d-TEMP |
| Fuel consumption, L/100 km (for Audi SQ8 TDI 2019) — city — highway — combined |
10.2 7.2 8.3 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 280 |
The engine was installed on:
- Audi SQ8 1 (4M) in 2019 – 2020.
Disadvantages of the Audi DHVA engine
- On specialized forums, the motor is usually praised, but there are also complaints;
- Firstly, they note glitches in the operation of the turbocharging, which leads to traction failures;
- Cases of lubricant level surges with the appearance of a corresponding error are also described;
- The remaining engine problems are related to failures in the EGR, DPF and AdBlue systems.
Frequently asked questions about the Audi DHVA
How much power does the Audi DHVA make?
The Audi DHVA develops 435 hp and 900 Nm of torque.
How much oil does the Audi DHVA take and which one?
Engine oil capacity: 9.1 liters. Recommended oil: 5W-30.
Does the Audi DHVA have a timing belt or chain?
The Audi DHVA uses a timing chain.
Is the Audi DHVA turbocharged?
Yes, the Audi DHVA is turbocharged (Bi-Turbo + EAV).
Does the Audi DHVA need valve clearance adjustment?
No, the Audi DHVA has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Audi DHVA last?
The typical lifespan of the Audi DHVA is ~300 000 km with proper maintenance.
What is the fuel consumption of the Audi DHVA?
Audi SQ8 TDI 2019: city 10.2, highway 7.2, combined 8.3 L/100 km.
What cars was the Audi DHVA installed on?
Audi SQ8 1 (4M) in 2019 - 2020.
What are the common problems of the Audi DHVA?
On specialized forums, the motor is usually praised, but there are also complaints. Firstly, they note glitches in the operation of the turbocharging, which leads to traction failures. All known problems.
