One of the earliest vehicles produced by Rover was called the Rover 6, which should not be confused with the P6. The automobile was a two-seater with an open top and a water-cooled, single-cylinder engine that produced 6 horsepower. It was manufactured from 1905 until 1912. The automobile had a gearbox with three gears and a drivetrain with rear-wheel drive. The car was manufactured with a number of other Rover autos such as the Rover 8, simultaneously.