What Car? says...
There are few greater joys in motoring than a brilliant engine, and BMW has produced a fair few over the years. Its current 335bhp twin-turbocharged 3.0-litre straight-six petrol unit is one of them and it’s what you’ll see before you when lifting the bonnet of a BMW M240i.
In many ways, it’s what this car’s entire driving experience centres around. You see, there was a time when sports cars with tuneful six-cylinder engines were plentiful but, with the downsizing trend continuing, the M240i is a dying breed. For instance, its closest rival, the Porsche Cayman, only recently dropped a couple of its cylinders to save fuel and cut CO2 emissions.