Merc GLS inset

Mercedes GLS

Merc have come up with a great way of describing their new GLS.

They simply call it the S-Class of SUVs. And why not? While the S-Class is one of the world’s finest and most opulent cars you could ever wish for, the GLS is the largest and most luxurious SUV.

If there’s anything its not got, that’s simply because it’s yet to be invented. Its third row of seats is big enough to hold two adults, up to 1.94m (6ft 4in) tall because its 77mm (3in) longer than its predecessor.

All three rows of seats are electrically adjustable seat and have what Mercedes call “a generous amount of space and outstanding seating comfort.”

They add that the third row pair of seats can be lowered into the floor at the push of a button to increase boot space (up to 2,400 litres), while the three seats in the second row fold flat.

If owners want, they can order their GLS as a six-seater with two luxury individual rear seats in the second row now available for the first time.

I must admit, I’m beginning to wish I was being driven in the back of one because Merc also say: “The new GLS indulges its passengers, especially those in the rear.”

What Merc call “key comfort features” are a Rear Seat Entertainment System with two 11.6-inch touch-screens for movie, music and internet enjoyment, a Rear Comfort Package Plus, which gives passengers a separate tablet for controlling all the car’s comfort and entertainment functions, heated seats with separate USB charging ports, including the third row, and five zone automatic climate control as standard. Passengers in the other two rows get 12.3in screens.

Merc GLS main

Needless to say the rest of the kit list is there for the benefits of the driver, or should I say chauffeur.

If you really must decide for yourself, the engine choices start with a 3.0-litre V6 diesel with 258hp and 620Nm (459lb) of torque which takes the car from 0-62mph in 7.8s and 138mph.

Then there’s a new diesel for the GLS 400 d with 330hp and 700Nm (518lb) of torque. That does 0-62mph in 6.3s and 148mph.

Mercedes also make a stonking 5.5-litre V8 petrol engine which rockets this near 2.5 tonne luxury space ship from 0-62mph in 4.6s and a limited 155mph, but that doesn’t come to the UK.Instead we’ll have to wait for a GLS 450, which comes to the UK next year. It won’t be slow. The range starts at £73,995 and is available to order now.

I’ll leave the last words to Mercedes board member Ola Källenius: “It embodies luxury, confidence and intelligence like almost no other vehicle.”