The Rover P5 series, was a group of large saloon and coupé automobiles produced from 1958 until 1973. Models were marketed under the names Rover 3 Litre, Rover 3.5 Litre and Rover 3½ Litre. The P5 was a much larger car than the P4 which in some respects it replaced. It was extremely popular with United Kingdom Prime Ministers and government officials of its day. Queen Elizabeth II is said to have favoured driving her P5.