While the interior is styled to envelop you, there’s plenty of head, leg and shoulder room in the front, along with lots of useful storage points. However, the rear is much more cramped; adult passengers and even some teenagers will find their knees jammed against the seatbacks and their head touching the roof. For more usable rear seats, buy a Mercedes S-Class Coupé or S-Class Cabriolet.
You can forget about getting most types of child seat in the back, too; tilt the front seat forward and it gives you only a small gap for rear seat access – much smaller than is provided in the S-Class. And unlike the 911, the M8 doesn’t compensate with Isofix mounting points on the front passenger seat.
The boot is relatively long, even in the M8 Convertible, but with quite a narrow opening and a big lip at its entrance. A set of golf clubs or a few carry-on suitcases might just fit, but you’ll struggle to accommodate anything bulkier. The good news is that, with either body style, you can fold down the rear seats for extra load space if required. That’s a rarity in this type of car; with the DB11 and, to a lesser extent the S-Class, you’re stuck with a relatively small and non-expandable boot.