|Three variations of the engine are present. The SLK280 has a 3.0 litre V6 engine. The SLK350 has a 3.5 litre V6 engine whereas the SLK55 AMG has a 5.5 litre V8 engine. A seven-speed automatic gearbox is present in the SLK55 AMG. Other features present are power driver seat, heated front seats, weather band radio, driver and passenger air bags on front and side, electronic stability, GPS, etc.