Audi Bentley EA824 4.0 Twin-Turbo V8: Specs, Engine Codes & Maintenance
Audi / Bentley · Twin-turbo petrol
EA8244.0 TFSI V8
A compact V8 with a very big reach. The EA824 places two turbochargers inside its cylinder banks, bringing effortless torque to Audi performance cars and Bentley grand tourers. Cylinder deactivation helps at light load; when the pace rises, all eight cylinders get to work. Its key ownership check is the turbo oil supply.
Specifications
Architecture
- Bore × stroke
- 84.5 × 89.0 mm
- Block / cylinder heads
- Aluminium / aluminium
- Camshaft drive
- Timing chains
- Mounting
- Longitudinal
Air & combustion
- Turbochargers
- Two · inside the V
- Fuel system
- Direct petrol injection
- Charge cooling
- Water-to-air
- Cylinder deactivation
- Four cylinders at light load
Factory output examples
- S6 / S7 · 2013–2015
- 420 hp / 406 lb-ft
- S6 / S7 · 2016–2018
- 450 hp / 406 lb-ft
- RS7 · standard
- 560 hp / 516 lb-ft
- RS7 performance / S8 plus
- 605 hp / up to 553 lb-ft overboost
Control & service
- Audi engine management
- Bosch MED17.1.1
- Bentley V8 management
- Bosch MED17.1.1
- Compression examples
- 10.1:1 CEUC/CEUA; 9.3:1 CGTA
- Fuel / oil
- Premium petrol; specified VW oil approval
Advertised output varies by calibration and market. Temporary overboost torque is not a continuous rating. This guide covers the EA824 installations listed below.
Vehicles by engine code
| Engine code | Vehicle | Model years | Chassis |
|---|---|---|---|
| CEUC | Audi S6 / S7 | 2013–2015 | C7 / 4G |
| CTGE | Audi S6 / S7 | 2016–2018 | C7.5 / 4G |
| CEUA | Audi A8 / A8 L 4.0T | 2013–2014 | D4 / 4H |
| CTFA | Audi A8 / A8 L 4.0T | 2015–2018 | D4 / 4H |
| CGTA / CTGA | Audi S8 | 2013–2016 | D4 / 4H |
| CTGF | Audi S8 plus | 2016–2018 | D4 / 4H |
| CRDB / CWUC | Audi RS7 | 2014–2018 | C7 / 4G |
| CWUB | Audi RS7 performance | 2016–2018 | C7.5 / 4G |
| CMMC / CYCB | Bentley Continental GT / GTC V8 | 2013–2018 | 3W |
| CMMD / CYCA | Bentley Continental GT / GTC V8 S | 2014–2018 | 3W |
| CMMC / CYCB | Bentley Flying Spur V8 | 2014–2019 | 4W |
| CYCA | Bentley Flying Spur V8 S | 2017–2019 | 4W |
Selected U.S./Canadian applications. Codes can change within a model year; confirm the vehicle data label and ECU part number before ordering parts or software.
Common faults & maintenance
- Turbo oil strainer. On affected Audi vehicles, a restricted strainer can starve the turbo bearings. Check recall 21H7 / 22V-178 completion by VIN; oil changes alone do not complete the recall repair.
- PCV and oil leaks. Whistling, rough idle or abnormal crankcase pressure call for breather diagnosis. Inspect leaks in the valley and at covers before replacing seals.
- Cooling-system condition. Check pump operation, coolant connections and charge-cooler circuits. Heat and restricted airflow make small cooling faults more consequential under load.
- Misfires and deposits. Test plugs, coils and fuel pressure, and inspect intake-valve deposits if symptoms warrant. Diagnose timing faults or persistent chain noise promptly.
Keep it healthy. Maintain the correct oil approval and level, keep cooling airflow clear, and match oil-service frequency to use. Warm the engine before heavy load and ease off after sustained hard driving. Check applicable recalls and service campaigns using the VIN.
References
| Subject | Source |
|---|---|
| Design & specifications | Audi 4.0 TFSI training |
| Vehicle applications | Audi build guideBentley model and engine-code bulletin |
| Service information | Audi turbo oil-strainer recall 21H7 |
