The 4.0-liter twin-turbo V8 Audi DDTA was produced from 2015 to 2017 and was installed on the Audi S8. It has direct injection and two turbochargers (IHI RHF5) and produces 605 hp and 750 Nm.
4.0 TFSI V8 EA824 family: CRDB, CEUA, CEUC, CGTA, CTFA, CTGE, CWUB, DDTA.
Specifications
| Production years | 2015-2017 |
| Displacement, cc | 3993 |
| Fuel system | direct injection |
| Power output, hp | 605 |
| Torque output, Nm | 750 |
| Cylinder block | aluminum V8 |
| Block head | aluminum 32v |
| Cylinder bore, mm | 84.5 |
| Piston stroke, mm | 89 |
| Compression ratio | 9.3 |
| Features | AVS |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | at intake and exhaust |
| Turbocharging | two IHI RHF5 |
| Recommended engine oil | 5W-40 |
| Engine oil capacity, liter | 8.7 |
| Fuel type | petrol |
| Euro standards | EURO 6 |
| Fuel consumption, L/100 km (for Audi S8 Plus 2016) — city — highway — combined |
13.8 7.7 9.9 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 224 |
The engine was installed on:
- Audi S8 D4 (4H) in 2015 – 2017.
Disadvantages of the Audi DDTA engine
- With proper maintenance this twin-turbo V8 can be reliable; avoid engines after serious tuning and watch the cooling;
- Poor fuel quickly destroys the Alusil coating of the cylinders;
- Turbocharger life depends on how often the oil and their mesh filters are changed;
- Owners often complain about the high-pressure fuel pump, active engine mounts and timing chain tensioners.
Frequently asked questions about the Audi DDTA
How much power does the Audi DDTA make?
The Audi DDTA develops 605 hp and 750 Nm of torque.
How much oil does the Audi DDTA take and which one?
Engine oil capacity: 8.7 liters. Recommended oil: 5W-40.
Does the Audi DDTA have a timing belt or chain?
The Audi DDTA uses a timing chain.
Is the Audi DDTA turbocharged?
Yes, the Audi DDTA is turbocharged (two IHI RHF5).
Does the Audi DDTA need valve clearance adjustment?
No, the Audi DDTA has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Audi DDTA last?
The typical lifespan of the Audi DDTA is ~300 000 km with proper maintenance.
What is the fuel consumption of the Audi DDTA?
Audi S8 Plus 2016: city 13.8, highway 7.7, combined 9.9 L/100 km.
What cars was the Audi DDTA installed on?
Audi S8 D4 (4H) in 2015 - 2017.
What are the common problems of the Audi DDTA?
With proper maintenance this twin-turbo V8 can be reliable; avoid engines after serious tuning and watch the cooling. Poor fuel quickly destroys the Alusil coating of the cylinders. All known problems.
