- See Aston Martin DB Mark III for the road car often called "DB3"
 Aston Martin DB3/5, at Goodwood Festival of Speed 2009 | |
| Category | Le Mans Racer Sports car racing |
|---|---|
| Constructor | Aston Martin Lagonda LTD |
| Designer(s) | Robert Eberan von Eberhorst |
| Technical specifications | |
| Chassis | Twin-tubular, aluminium body, open two seater |
| Suspension (front) | Torsion bar and trailing arms |
| Suspension (rear) | Torsion bars, parallel links, panhard rod, De Dion axle |
| Length | 13 ft 2½ in (4,026 mm) |
| Width | 5 ft 1½ in (1,562 mm) |
| Height | 3 ft 4 in (1,016 mm) |
| Axle track | 4 ft 3 in (1,295 mm) |
| Wheelbase | 7 ft 9 in (2,362 mm) |
| Engine | Lagonda 2,580 cc/2.9L Straight 6, Twin OHC, FR Layout, 3 twin-choke Weber 36 DCF5 carburettors |
| Transmission | David Brown S527, 5-speed Manual, later a David Brown S430/63R, 4-speed Manual, 9" single clutch |
| Tyres | Dunlop 16 x 6 |
| Competition history | |
| Notable entrants |  David Brown |
| Notable drivers | Reg Parnell |
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.