The six-cylinder ohv engine had a capacity of 1,577 cc. Maximum power output of 54 bhp (39.7 kW) and a top speed of 111 km/h (69 mph) were claimed. The leisurely performance was addressed in 1938 through the fitting of a 1,901 cc engine. A marginal improvement in performance resulted.
From 1937 Rover customers wishing to combine the virtues of the Rover 14 with less sluggish performance could opt for the Rover 16 which combined the same body with a larger engine.
Civilian automobile production came to an end in 1940 because of the war, but in 1945 the Rover 14 returned to the market and remained available until replaced in 1948 by the Rover P3.