The Aston Martin DB3 is a car from Aston Martin. Under the bonnet: gasoline engine. Robert Eberan von Eberhorst drew it.
The background
See Aston Martin DB Mark III for the road car often called "DB3"
The Aston Martin DB3 and later DB3S were sports racing cars built in the 1950s. Although they used some DB2 parts, they were quite different, being designed specially for racing. The original modifications were done by ex-Auto Union engineer, Eberan von Eberhorst, though others handled the later DB3S work.
The engineering
Power comes from gasoline engine. The wheelbase is 7 ft 9 in (2,362 mm). These are manufacturer figures carried by Wikipedia and Wikidata, not road-test measurements.
Where it sits
Its Aston Martin stablemates include the Aston Martin Mark II and the Aston Martin V12 Vantage GT3.