You don’t splash out on a £300,000 convertible and then fret over whether you can afford the insurance. But for what it’s worth, the Rolls falls into group 20, the highest available and the 377g/km of CO2 makes it an expensive company car. There are some upsides: fuel consumption is only bad rather than terrifying, a gallon stretching 18 miles which isn’t much worse than you’d manage in a BMW M3, and the Rolls only needs servicing every 25,000 miles.

But you could probably run a supermini for a year on what it will costs to buy four new tyres for those 21-inch wheels.

With a theoretical average of 18mpg and carbon dioxide emissions of 377g/km, the Drophead Coupe isn’t going to win any prizes for its green credentials. Owners can reassure themselves that the Rolls-Royce factory in Goodwood has signed up to a number of ‘green’ initiatives, even if their car is a high-emission vehicle. Having said that, 377g/km from a 6.7 litre V12 engine in a car weighing more than 2600kg is a good achievement.

It might well be badged a Rolls, but the engineering know-how and componentry is all BMW’s work so you would expect not to be left stranded at the side of the road. The Rolls is built at a sophisticated underground factory in Sussex where rigorous quality control checks are in place.