The most potent versions of the Bentley Bentayga or Audi SQ7 4.0 TDI crossover were equipped with the 4.0-liter bi-turbo diesel engine Audi CZAC, which was manufactured in Germany between 2016 and 2020. A version of this engine with the index CZAA and 422 horsepower is available without an electric turbine.
The EA898 series also includes: AKF, ASE, BTR, CKDA, CCGA, CZAC, DHVA.
Specifications
| Production years | 2016-2020 |
| 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 |
| 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 5/6 |
| Fuel consumption, L/100 km (for Audi SQ7 TDI 2017) — city — highway — combined |
10.7 7.5 8.7 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 260 |
The engine was installed on:
- Audi SQ7 2 (4M) in 2016 – 2020;
- Bentley Bentayga 1 (4V) in 2017 – 2019.
Disadvantages of the Audi CZAC engine
The motor receives a lot of praise on specialized forums, but there are also some complaints.
Traction failures are most frequently observed as a result of turbocharging malfunctions;
Additionally described are instances of oil level surges accompanied by the emergence of a matching error;
Failures in the AdBlue, DPF, and EGR systems are linked to all other diesel issues.