The Rover P5 series (commonly called 3-Litre and 3½ Litre for the engine displacement) was a group of large saloon and coupé automobiles produced from 1958 until 1973. It was a much larger car than the P4 which in some respects it replaced The 1st P5 was the 1958 Mk I with 115hp 2995cc 6 cyl The 1962 Mk II, now 129 hp 2995cc 6 cyl, qtr light windows and a 4 door coupe introduced with lower sloping roofline. The 1965 Mk III now 134hp 2995cc 6 cyl, full-length trim strip along the body and Mark III badging. The last of the P5s was the P5B; built from 1967-73 with 3.5 litre Rover V8, the B stood for Buick who sold Rover the V8 design