Austin 40 hp

The Austin 40 hp is a 4-cylinder motor car launched at the Olympia Motor Show in November 1907. Manufactured by Austin at Longbridge, Northfield, Birmingham, it was the first variant from Austin's initial plans for a two model range of a 15 hp (RAC 27 hp)—which they had dropped—and a 25 hp (RAC 33 hp) car.

Tax rating was still new and manufacturers preferred their own output estimates.