The 2004 BMW 6-Series is available in two trim levels – the 645Ci two-door Convertible and the 645Ci two-door Coupe. BMW’s 6-Series offers plenty of power under the hood with impressive passing capabilities, with both models feature 325 horsepower 4.4-liter V8 engines. Buyers can choose between three six-speed transmissions, including an automatic, a conventional manual, and BMW’s sequential manual. The 6-Series comes nicely equipped, including heated lumbar seats for the driver and passenger, cruise control, keyless entry, memory mirrors, a navigation system and plenty of additional power options common to today’s luxury vehicle segment. Safety features on the 6-Series are also robust, and include front and side-body airbags, ABS brakes, traction control and a rollover protection system.