At its peak, the Mini was a strong seller in most of the countries where it was sold, with the United Kingdom inevitably receiving the highest volumes. The 1, 000, 000th Mini came off the production line in 1965, with the 2, 000, 000th in 1969. The 3, 000, 000th Mini came off the production line in 1972, with the 4, 000, 000th in 1976.

It dominated the mini-car market until the arrival of the Hillman Imp in 1963. It outsold the Imp. Competition arrived with the more modern and practical Vauxhall Chevette of 1975, but the Mini continued to sell well until its "replacement"—the Metro—arrived in 1980. By this time, the Mini's design had been overtaken by numerous more modern and practical vehicles.

Although the Metro did not replace the Mini, production figures for the Mini dipped during the 1980s, and interest in the design was not revived until the reintroduction of the Mini Cooper in 1990. This helped sales of the Mini through the 1990s, to the end of production on 4 October 2000.

A total of 1, 581, 887 Minis were sold in the UK after its launch in 1959. The last new one to be registered was sold in 2004, some four years after the end of production

This example is a genuine "John Cooper Garages" Cooper Si, one of 40 produced (Number 21) and supplied with the original John Cooper conversion certificate signed by Mr J Cooper. The Mini Cooper Si was not an off the shelf conversion added by a dealer but a full blown out of the factory. John Cooper Garages 83 BHP Works car with a 1275cc A Series engine with tuned head, high lift rockers, sports seats, polished wood walnut facia, Mota-Lita steering wheel signed by John Cooper and a manual 4 speed gearbox. Presented in immaculate condition throughout with a detailed history file incorporating a host of MOTs and works carried out......

The internals of the John Cooper Garages examples had a host of styling touches that give both a sporty and luxurious feel with black leather sports seats, Mota-Lita steering wheel signed by John Cooper and polished Walnut wood inlays.

The external styling of the last Cooper Sports was a great swansong for a timeless car including 13 inch Cooper alloy wheels, body-coloured wheel arch spats, quad front lamps, chrome bumpers, a white roof and stripes and the usual Cooper touches which makes these Minis a truly peerless styling exercise.