:''See
Aston Martin DB Mark III for the road car often called "DB3"''

An Aston Martin DB3S in competition during a historics event.
The '
Aston Martin DB3' and later 'DB3S' were racing cars built in the 1950s. Although they used some
DB2 parts, they were quite different, being designed especially for racing. The original modifications were done by ex-
Auto Union engineer,
Eberan von Eberhorst, though others handled the later DB3S work.
DB3
The DB3 was introduced in 1951 with a 133 hp (99 kW) 2.6 L ''
Lagonda''
straight-6 engine from the DB2 ''Vantage''. The car was unsuccessful, so a larger 2.9 L engine, producing 163 hp (122 kW), was introduced for 1952. The car went on to place 2nd, 3rd, and 4th at
Silverstone that year behind a
Jaguar C-Type. The cars were forced out of
Le Mans, but did claim the 9-hour race at
Goodwood.
DB3S
The DB3S was a lighter version of the car, introduced in 1953. It was somewhat more successful, and was produced until 1956. Two
coupe versions were also built.
The DB3S was replaced in 1956 by the famed
DBR1, which finally claimed Le Mans in 1959.
References
★
Post War Competition Cars