The Aston Martin DB4 GT Zagato was introduced in October 1960 at the London Motor Show. It was effectively a DB4 GT, lightened and improved by the Zagato factory in Italy, by Ercole Spada. Initially the factory had plans to produce 25 cars, but demand was not as strong as expected and production ceased at the 20th unit.
Although the specification of the engine was changed and upgraded throughout their racing history, the Zagato predominantly featured a 3.7-litre aluminium twin-spark straight 6-cylinder engine with a 9.7:1 compression ratio, higher than to the DB4 GT engine.
The engine produced 314 hp (234 kW), and had a 0 to 60 mph (97 km/h) acceleration of just 6.1 seconds and a top speed of approximately 154 mph (246 km/h).