The E-Type Series 3 was introduced in 1971, with a new 5.3 L twelve cylinder Jaguar V12 engine, uprated brakes and standard power steering. Optionally an automatic transmission, wire wheels and air conditioning were available. The brand new V12 engine was originally developed for the 24 Hours of Le Mans. It was equipped with four Zenith carburettors. The final engine was claimed to produce 203 kW (272 hp), more torque, and a 0-60 mph acceleration of less than 7 seconds, but this bhp figure was reduced in later production. The short wheelbase FHC body style was discontinued, with the Series 3 available only as a convertible and 2+2 coupé.