It was the first model from that company following its purchase by David Brown in 1947, and was named for the new straight-6 engine which debuted with the car.

The 2.6-Litre (105 bhp) was a larger car than the Aston Martin models which were being produced under David Brown's ownership and was available as a 4-door saloon and, from 1949, as 2-door drophead coupé, both with 4 seats.

The drophead was bodied by Tickford, at the time not part of Aston Martin.

A Mark II version appeared in 1952, in saloon form only, with engine power increased to 125 bhp.

The car had a separate chassis and all independent suspension using coil springs at the front and torsion bars at the rear.