However, finding a parking space large enough to accommodate its exceptional width of 1922mm can prove difficult and begs the question as to why Mercedes-Benz hasn’t seen fit to equip it with side parking sensors like those available on the 5-series GT.
In a move that is crucial to its prospects of gaining sales momentum in the UK, Mercedes-Benz has also given its up-market MPV a new range of diesel engines in a line-up that supports both rear-wheel drive and four-wheel drive models, including the latest, high power version of its 3.0-litre V6 common rail unit.
With a gutsy 261bhp and 457lb ft of torque, it is clearly the pick of the engines offered in the heavily facelifted R-class, kicking out 40bhp and 81lb ft more than before while bringing a 2.9mpg reduction in overall consumption at 33.2mpg in the four-wheel drive R 350 CDI 4Matic driven here.
The R-class is also among the first models to benefit from a revised version of Mercedes-Benz’s 7G-Tronic seven-speed automatic gearbox. Standard across the line-up, it gets a faster acting torque converter that now automatically decouples the engine at standstill for added fuel savings among other detailed changes.
What's it like?
Together, the new engine and gearbox provide the R 350 CDI 4Matic with an energetic step off and good turn of speed away from the traffic lights – the prodigious torque making light weight of its 2175kg kerb weight. Indeed, for such a big car it is quite lively and impressively smooth in continual stop/start conditions.
But with those oversize dimensions and a large turning circle, city driving is not where it excels. It is at a steady cruise out on the motorway where the luxury MPV finds itself most at home. With all that torque at just 800rpm above idle, it devours distance with consummate ease. But while mechanical refinement is always impressive there is a fair amount of wind noise around the large exterior mirrors at speed.
With four-wheel drive helping and a whole armada of electronic driving aids, the R-class hangs on remarkably well when driven hard over winding roads – better than the M-class and G-class with which it shares its underpinnings and is build alongside at Mercedes-Benz Tuscaloosa plant in the US.
And with air springs and adaptive damping, it also rides with aplomb; the comfort setting provides with a pleasingly relaxed nature while the sport setting gives it a noticeably tauter feel. However, it should never be considered sporting. That role is left to the E-class estate, which is a good deal more agile at all times.
Should I buy one?
If you’re in the market for a large SUV or upmarket estate, it’s definitely worth considering the revised R-class. The various changes, particularly the new top-of-the-line diesel engine, make it a good deal more desirable than before.
Granted, it is not a car that appears to make great sense but it grows on you the more you drive it, especially over longer distances. As always, though, continues to have its limitations around town.