Despite its sporty and intimate feel inside, leg room in the front of the S7 is fine for six-footers and head room is okay unless you’re extremely tall. Most will find it easy enough to get and out of the rear, too, and – if you’ve parked too close to someone and don’t think you’ll have the space to open the door wide enough, rolling down the windows leaves no frame to obstruct your route out of the car.
Once inside, the S7 offers similar room to the CLS 53 — both leg and head room are fine for two tall folks. You will struggle to get three passengers abreast in the back, though, unless all of them are kids.
Moving to the S7’s boot, there’s a wide-opening tailgate so it’s a breeze to load even very bulky items — you can’t do the same through the CLS 53’s narrower opening. The S7’s relatively gargantuan trunk takes up to eight carry-on suitcases, which is one more than the CLS 53 can handle. A couple of sets of golf clubs will prove no issue, either.
If you need even more room, then 40/20/40 split-folding rear seats come as standard, allowing you to fit longer loads when required.