The Rover 3500, part of the Rover P6 series which included the 2000 and 2200 (all named by their engine displacement) is a saloon car produced by Rover and subsequently British Leyland from 1963 to 1977 in Solihull, England. The P6 was voted European Car of the Year in 1964, being the first winner of the title.
Rover utilised American car manufacturer Buick's compact 3.5-litre (3528 cc/215 in³) V8 engine as a way to differentiate the P6 from its chief rival, the Triumph 2000. Having purchased the rights to the innovative aluminium engine, once modified by Rover it became an instant hit. The Rover V8 engine, as it became known, outlived the original P5B by more than thirty years.
The Rover 3500 was introduced in April 1968 and continued to be offered until 1977. With a maximum speed of 114 mph and impressive 0-60 acceleration in 10.5 seconds, the Rover 3500 was faster than the vast majority of its rivals.
A 3-speed Borg Warner 35 automatic was the only transmission until the 1971 addition of a four-speed manual 3500S model, fitted with a modified version of the gearbox used in the 2000/2200. The letter "S" did not denote "Sport", it was chosen because it stood for something specific on those cars: "Synchromesh". However it is important to note that the 3500S was noticeably quicker than the automatic version of this car with a 0-60 mph time of just 9 seconds.