Being only just shorter overall than BMW’s 7 Series luxury car, but with the same length between its front and rear wheels, there’s an abundance of space inside the 6 Series GT; so much so that it proves way more practical than other four-door coupés, such as the Mercedes-Benz CLS and Audi A7 Sportback.
It would take a seriously lanky person to feel hemmed in sitting in the front seats, while in the rear a couple of six-footers will have no problem stretching out. In fact, even a third adult in the middle seat wouldn’t grumble on a long journey, while head room is so good that the addition of a panoramic sunroof, which is standard on M Sport models, doesn't cause issues. A feature you might want to add from the options list if you regularly carry people in the back is electrically reclining rear seats.
The boot's superb 610-litre capacity betters that in both the A7 and CLS, providing more of space for buggies or suitcases; for example, we fitted nine carry-on suitcases inside. If that's not enough, the rear seats fold almost flat in a practical 40/20/40 configuration, giving a lengthy extended load bay for trips to the tip.
The only issue is that while the space is long and square, like its coupé-esque rivals it’s also relatively shallow in the area of that sloping hatch compared with, say, a 5 Series Touring.