Although the headline numbers of 256.8mpg, 26g/km of CO2 and a 0-62mph time of just 7.6 seconds make the Audi A3 40 TFSI e appear quite a game-changer, look behind the numbers and you'll find things not quite so clear cut. In fact, a counter perspective might well be that you're paying around £4,000 over the top of an A3 Sportback 35 TDI 150PS diesel and getting a car that's slower, drinks more fuel, carries less luggage, offers inferior touring range and once out of charge will drink much more fuel.
Of course, the A3 40 TFSI e has other benefits. It can run in a pure EV mode and it feels a far more special piece of kit than a diesel hatch. Can you put a price on that? You can perhaps if you measure the savings you'll make in company car tax. And this model certainly scores as a car you can drive as an EV on short commutes to work, but which is capable of long weekend trips. As a technical showpiece, it's an intriguing thing. As a sales proposition though, you might need to scour the small print quite carefully.