BAT 4.2 FSI 350hp
Engine code BAT is a petrol engine of 4,163 cc, rated at 350 hp. It was fitted to 5 different Audi models, which is why the code matters more than the badge on the boot.
Cars fitted with BAT
| Make | Model | Generation | Power |
|---|---|---|---|
| Audi | A8 | D2 (2000–2002) | 350 hp |
| Audi | R8 | 42 (2006–2015) | 350 hp |
| Audi | S4 | B6 (2003–2004) | 350 hp |
| Audi | S4 | B7 (2005–2008) | 350 hp |
| Audi | S8 | D2 (2000–2002) | 350 hp |
Which ECU it runs
BAT is controlled by a Bosch ME7.1.1 engine control unit.
What goes wrong with this engine
The faults this engine is genuinely known for — and the timing arrangement, which decides a great deal about running costs — are covered in 4.2 V8 FSI problems.
Where to find your engine code
The three or four letter code is stamped on the engine block and is usually printed in the service book. It is also stored electronically, so any diagnostic tool that talks to the engine control unit will read it back without you having to find the stamping.
The code matters more than the model year. Cars of the same age and badge were built with different engines, and the timing arrangement, common faults and correct parts all follow the code rather than the year.
VAGPULSE reads the engine code straight off the ECU, along with every stored fault and the live data behind it — so you never have to guess which engine you have. One payment, no subscription.
See VAGPULSE Look up a fault codeCommon questions
What car has engine code BAT?
BAT was fitted to the Audi A8 D2 (2000–2002), the Audi R8 42 (2006–2015), the Audi S4 B6 (2003–2004), the Audi S4 B7 (2005–2008), the Audi S8 D2 (2000–2002).
What is engine code BAT?
BAT is a 4.2 FSI 350hp (petrol).
Which ECU does BAT use?
BAT runs a Bosch ME7.1.1 engine control unit.