The 6.3-liter Audi CEJA or A8 W12 6.3 FSI engine, which was only installed in the most sophisticated A8L quattro sedan models in the D4 body before restyling, was produced by the company between 2010 and 2013. After the model was redesigned, this unit was swapped out for an updated motor with the CTNA index.
The EA398 series includes: BHT, BRN, CEJA, BDN.
Specifications
| Production years | 2010-2013 |
| Displacement, cc | 6299 |
| Fuel system | direct injection |
| Power output, hp | 500 |
| Torque output, Nm | 625 |
| Cylinder block | aluminum W12 |
| Block head | aluminum 48v |
| Cylinder bore, mm | 86 |
| Piston stroke, mm | 90.4 |
| Compression ratio | 11.8 |
| Features | no |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | on the intake and exhaust |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 11.5 |
| Fuel type | petrol |
| Euro standards | EURO 5 |
| Fuel consumption, L/100 km (for Audi A8L 2011) — city — highway — combined |
18.2 9.0 12.4 |
| Engine lifespan, km | ~260 000 |
The engine was installed on:
- Audi A8 D4 (4H) in 2010 – 2013.
Disadvantages of the Audi CEJA engine
The quality of the fuel and lubricant used in this engine is very important.
Scoring rapidly develops as a result of poor fuel and oil in the engine cylinders.
An oil burner that is prone to turning the liners appears as a result of scuffing.
The formation of scoring is significantly accelerated when the power unit overheats frequently.
Timing chains frequently need maintenance after 200,000 kilometers, and the engine must be removed.