What is the top speed of the classic Mini Cooper S (1275 cc)?

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The classic Mini Cooper S with a 1275 cc engine had a top speed of 97 mph.

The 1275 cc Cooper S was the most powerful version of the classic Mini Cooper range. It used a four-cylinder engine producing roughly 75 horsepower in period specifications, giving the lightweight front-wheel-drive car lively performance for a small family saloon. Factory information commonly lists its maximum speed as 156 km/h, equivalent to 97 mph.

The model was introduced in 1964 and was developed partly to meet homologation requirements for international rallying, including the 1300 cc competition class. Its performance helped make the Cooper S both a road-car icon and a successful motorsport machine.

The 97-mph figure is a quoted specification rather than a guarantee for every surviving car. Gear ratios, tuning, tyres, body condition and measurement methods can produce slightly different real-world results. It should also not be confused with the lower top speeds of smaller 970 cc or 1071 cc Cooper S versions, or with much faster modern BMW-era Minis.

Source: Wikipedia · fact-checked Sept. 2026

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