The Aston Martin db3 and later Aston Martin DB3S were built in the 1950′s race cars. Although it used Aston Martin DB2 parts, they were quite different, is designed especially for racing. The original changes were done Union engineer, Eberan von Eberhorst of ex-car, although others treated later working Aston Martin DB3S. The db3 was Lagonda straight six-cylinder engine in 1951 with a 133 HP (99 kW) 2.6 L from the DB2 vantage point. The car was unsuccessful, so a larger 2.9 L engine, 163 HP (122 kW), 1952. The car went on 2, 3 and 4 at Silverstone that year behind a Jaguar C-type is taking place. The cars were of Le Mans, but claimed the 9-hour race in Goodwood.
The Aston Martin DB3S introduced a lighter version of the car, in 1953. It was somewhat successful and produced in 1956. Two Coupe versions were also built. The Aston Martin DB3S was replaced in 1956 1959 finally claimed the famous Aston Martin Lola, Le Mans.