The 4.0-liter twin-turbo V8 Audi CTGE was produced from 2014 to 2018 and was installed on the Audi S6 and Audi S7. It has direct injection and two turbochargers (IHI RHF5) and produces 450 hp and 550 Nm.
4.0 TFSI V8 EA824 family: CRDB, CEUA, CEUC, CGTA, CTFA, CTGE, CWUB, DDTA.
Specifications
| Production years | 2014-2018 |
| Displacement, cc | 3993 |
| Fuel system | direct injection |
| Power output, hp | 450 |
| Torque output, Nm | 550 |
| Cylinder block | aluminum V8 |
| Block head | aluminum 32v |
| Cylinder bore, mm | 84.5 |
| Piston stroke, mm | 89 |
| Compression ratio | 10.1 |
| 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 S7 2015) — city — highway — combined |
13.2 7.0 9.3 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 219 |
The engine was installed on:
- Audi S6 C7 (4G) in 2014 – 2018;
- Audi S7 C7 (4G) in 2014 – 2018.
Disadvantages of the Audi CTGE 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 CTGE
How much power does the Audi CTGE make?
The Audi CTGE develops 450 hp and 550 Nm of torque.
How much oil does the Audi CTGE take and which one?
Engine oil capacity: 8.7 liters. Recommended oil: 5W-40.
Does the Audi CTGE have a timing belt or chain?
The Audi CTGE uses a timing chain.
Is the Audi CTGE turbocharged?
Yes, the Audi CTGE is turbocharged (two IHI RHF5).
Does the Audi CTGE need valve clearance adjustment?
No, the Audi CTGE has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Audi CTGE last?
The typical lifespan of the Audi CTGE is ~300 000 km with proper maintenance.
What is the fuel consumption of the Audi CTGE?
Audi S7 2015: city 13.2, highway 7.0, combined 9.3 L/100 km.
What cars was the Audi CTGE installed on?
Audi S6 C7 (4G) in 2014 - 2018; Audi S7 C7 (4G) in 2014 - 2018.
What are the common problems of the Audi CTGE?
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.
