|Like Enzo Ferrari, Donald Healey was a competitor who built his cars with competition in mind. Healey, who had a pilot's licence before a drivers licence, began competing in 1921. His first 'race car' was a Buick!, an ex-taxi that he used in local trials. In 1929 he drove a Triumph Super Seven in the Monte Carlo Rally and together with Tommy Wisdom won the Mont des Mules trophy for best time on that hillclimb.|
In 1930 he was European Hill Climb champion in a 41/2 litre Invicta, while in 1931 co-driving an S-type version of the same car he won the Monte Carlo Rally. He also finished second in 1932 event.
In 1948, together with son Geoff he finished 9th in his first Mille Miglia, driving a Healey "Westland Roadster"
The original 100 was designed with club racing in mind, hence its novel folding windshield to improve aerodynamics.
The 100S derived its name from the Sebring 12 hour race, a prototype S being driven to third place in the 1954 event by Lance Macklin and George Huntoon. Stirling Moss finished ahead of them driving an OSCA.
Moss was back the following year this time partnering Macklin in the works entry Healey. They finished sixth behind more exotic machinery and Austin-Healeys were 1-2-3 in the production class.