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MkIII Cooper S

MkIII Mini Cooper S

The last of the production Cooper S', and it wasn't given much of a send off as BMC phased out the Cooper brand in favour of the 1275 GT. As such the MkIII Cooper S received little in the way of 'extras' and was only ever offered in a single colours, rather than the duo-tone with contrasting roof colour the Coopers had become known for.

Production dates March 1970 - June 1971
Price at launch £942
Total Production 1570 UK, 18,000 CKD
Chassis numbers XAD134127 - XAD1458987

Engine 1275cc four-cylinder OHV, twin SU carbs
Engine designation 12F
Bore/stroke 70.6 x 81.33mm
Compression ratio 9.75:1
Power output 76bhp @ 5800rpm
Torque 79lb.ft @ 3000rpm
Transmission Four-speed manual
Final drive 3.765
Brakes Front 7.5-inch discs. Rear: drums. Servo assisted
Suspension Hydrolastic mostly, or rubber cones
Wheels 10 x 3.5-inch or 10 x 4.5-inch pressed steel
Wheelbase 80-inches
Length 120.25-inches
Width 55-inches
Height 53-inches
Tyres Dunlop 145-10 SP

Maximum Speed 96mph
0-60mph 11.2secs
Average fuel consumption 29mpg


Twin 5.5gal fuel tanks.

Engine painted black, not green

Bumper over-riders

Internal hinges

Mini Cooper S badge on bootlid

No duo paintjob