We all love a big headline figure, and in a game of Top Trumps the Mercedes-AMG A45 is the best card to draw out of all the hot hatchbacks. That’s because its engine develops a whopping 416bhp ...

A hot hatch is a car many will buy with their head as well as their heart, because they must be as capable on the school or supermarket run as they are at raising pulses on a winding road.

The 421hp Mercedes-AMG A45 S is a five-door hatchback that can outpace some supercars. We spend a week driving one. Four hundred and twenty one horsepower. Sheesh. That’s four times the output ...