What are they like inside?

Gone are the days when living with a sports car meant constant backache. In fact, the 911’s interior is more comfortable and classy than most executive saloons’ – it has a brilliant driving position and there are seriously plush materials everywhere you look.

Climb aboard the F-Type and there’s undoubtedly greater drama. Press the start button and heater vents rise from the dashboard, while a chunky central grab handle seems to fence the passenger off from the controls. However, start prodding some of the plastics and you’ll quickly realise they aren’t as lavish as those in the 911. The F-Type’s seats aren’t as supportive through corners, either.

The F-Type’s touchscreen infotainment system is another triumph of style over substance. While it looks flash, it’s actually a headache to use, partly because it’s slow to respond to screen presses but also because of its overcomplicated menu system.

The 911 gets Porsche’s new and improved infotainment system. You can control it using a rotary dial or by pressing the screen itself, but either way it’s quicker to respond and more intuitive.

The F-Type is a strict two-seater, but while the 911 has a couple of rear seats, these are best reserved for baggage; adults simply won’t fit in them and even kids won’t relish a long journey. That said, Porsche will sell you an Isofix child seat that’s designed to slot perfectly into the sculpted rear seatbases.

Better still, the 911’s rear seats can be folded down, opening up a flat ledge under the rear screen that you can use to carry a set of skis or golf clubs. That’s a good thing because the 911’s boot – in its nose – is too narrow and short for a big suitcase, although it’s deep enough for a couple of soft overnight bags.

The F-Type, meanwhile, has a single boot in the usual place. It's shallow but will swallow a set of golf clubs if you take out the woods and slot them in separately. There’s even a handy underfloor cubby for fragile items.