For 2005, the M350 features a 3.7-liter V6 engine generating 232 horsepower; the M500 features a 5.0-liter V8 that generates 288 horsepower. Both models come standard with a five-speed automatic transmission linked to a 4Matic all-wheel-drive system. , ALL TYPES OF CREDIT ACCEPTED CALL SHANNON OR ANDY @ 919-989-4074 FOR YOUR PREOWNED RIDE!!!!