 The magazine published a road test report in 1968 of a 428 coupé, and recorded a maximum speed of 141 mph (227 km/h) along with a 0 - 60 mph (97 km/h) time of 6.2 seconds.The acceleration time was fractionally better than the magazine's testers had achieved with an Aston Martin DB6, but the Aston Martin was comfortably ahead on top speed.The AC's overall fuel consumption for the test came in at 15.6 mpg (18.1 l/100 km), roughly 15% better than the heavy Aston Martin.