The Coopers began by building single-seat 500 cc Formula Three cars powered by motorcycle engines. Because the JAP engine used chain-drive gearing, placing it at the rear was simply a practical convenience — but the layout's handling advantages quickly became apparent. The Cooper 500 dominated its category, winning 64 of 78 major races between 1951 and 1954, and gave early career opportunities to Stirling Moss, Ken Tyrrell, and Bernie Ecclestone among others. The company was the world's first large-scale specialist manufacturer of racing cars for sale to private entrants.
Cooper's first taste of Grand Prix competition came when Harry Schell qualified a modified T12 for the 1950 Monaco Grand Prix, making it the first rear-engined car to start a post-war World Championship round. A front-engined Formula Two car, the Cooper Bristol, followed in 1952 and was raced by drivers including Juan Manuel Fangio and Mike Hawthorn.
The decisive shift came in 1957 and 1958. A privately entered Cooper T43, driven by Stirling Moss for Rob Walker Racing at the 1958 Argentine Grand Prix, became the first rear-engined car to win a Formula One World Championship round — outfoxing the Italian teams who assumed it would need a tyre stop. At Monaco the same year, Maurice Trintignant won in a Cooper T45, stunning the racing establishment.
In 1959, Jack Brabham and the Cooper works team became the first outfit to win the Formula One World Drivers' and Constructors' Championships in a rear-engined car. They repeated both titles in 1960. Every Formula One World Champion after 1958 has sat ahead of his engine, and every Indianapolis 500 winner since Jim Clark's 1965 victory has done the same. The design revolution Cooper sparked was complete.
The unsung figure behind the cars was designer Owen Maddock, known in the garage as "Whiskers," who shaped the tubular steel chassis and later pioneered honeycomb composite monocoque concepts for the team.
As competitors absorbed Cooper's lessons and built more sophisticated machinery, the Surbiton team found it increasingly difficult to keep pace. Changing engine regulations — a reduction to 1500 cc for 1961 and a jump to 3000 cc for 1966 — compounded the challenge. John Cooper was seriously injured in a road accident in 1963, and Charles Cooper died in 1964. John sold the Formula One operation to the Chipstead Motor Group in April 1965.
Under new ownership, Cooper partnered with Maserati for the 3-litre formula, producing the T81. John Surtees joined mid-season 1966 and won the Mexican Grand Prix, while Pedro Rodríguez and Jochen Rindt delivered a one-two in the 1967 South African Grand Prix — Cooper's final victory. By 1968, running uncompetitive BRM V12 engines in the T86B, the team was effectively finished. A planned Cosworth DFV programme for 1969 never materialised, and the Formula One operation closed with the workforce's redundancies that year.
In all, Cooper participated in 129 Formula One World Championship events across nine seasons, winning 16 races.
Brabham tested a championship-winning T53 at Indianapolis Motor Speedway in 1960 and returned in 1961 with the offset T54. The small rear-engined car was mocked on arrival but ran as high as third before finishing ninth. The lesson was absorbed slowly, but by 1965 every serious Indianapolis contender had followed suit.
The Cooper Car Company's contribution to motor racing extends beyond its race victories. By demonstrating at the highest level that rear-engined cars were faster, more stable, and more efficient, it made front-engined single-seaters obsolete within a few years. The Cooper name endures through the Mini Cooper range, which John Cooper conceived in 1961 and which won the Monte Carlo Rally in 1964, 1965, and 1967. BMW acquired the Cooper name when it purchased the Mini brand and continues to produce Cooper-badged variants today.