This has to be, by far, the roomiest Mercedes period. Back seat comfort, even in the third row, is unmatched.
Of course, excellent quality reputation.
Much better than expected for a very large and long vehicle. Close to 25MPG on longer trips.
Everything under the sun. Rear heated seats...really? I never use them, but neat.
Airmatic, although a ticking time bomb for failure, is amazingly smooth and comfortable. Firm and sporty when needed.