2015 Mercedes-Benz GLC 250d review

Impressive new GLC rides better, is more economical and boasts better perceived quality than a BMW X3. The all-new Mercedes-Benz GLC, which will seek to dethrone the second-generation BMW X3 at the top of the premium brand mid-sized SUV sales charts and provide competition to the seven-year-old Audi Q5 when it goes on sale in September.The predecessor to the GLC, the square-edged GLK, was never produced in right-hand-drive guise owing to difficulties in packaging the driveshaft for the front axle, and subsequently it was not sold through official Mercedes-Benz sales channels in the UK. As a result, the German car maker has been unrepresented in one of the fastest-growing and most profitable market segments.The arrival of the GLC rectifies this hole in Mercedes' line-up. The smart-looking SUV is based on the same platform as the latest C-Class, but receives a 33mm-longer wheelbase than its saloon and estate siblings. It also uses tracks that have been widened by 31mm at the front and 47mm at the rear over the C-Class.Mercedes makes no secret of the fact that the key rival for the GLC is the X3, so it is no surprise to find that the two share similar dimensions. The new SUV is a mere 1mm longer, 9mm wider and 21mm lower than the BMW at 4656mm, 1890mm and 1639mm respectively.Although it is larger than its predecessor in all vital external measurements, Mercedes says the GLC is 80kg lighter than the GLK. This has been achieved through the use of hot-formed high-strength steel in the body structure and aluminium for the front wings, bonnet and roof. The GLC250d tested weighs 1770kg, making it 40kg heavier than the X3 xDrive20d and 45kg lighter than the high-powered version of the Q5 2.0 TDI.Two diesel-powered models will be sold from the outset in the form of the £34,950 GLC220d and £36,105 GLC250d. They both run Mercedes’s widely used OM651-designated turbocharged 2.1-litre four-cylinder powerplant in differing states of tune, the former with 168bhp and 295lb ft, and the latter producing 201bhp and 369lb ft.  Other left-hand-drive European markets get a petrol powered GLC250, which uses a turbocharged 2.0-litre four-cylinder engine with 208bhp and 258lb ft. Also planned to follow before the end of 2015 but not planned for right-hand drive production is a petrol-electric-powered plug-in hybrid variant, the GLC350e.It combines a turbocharged 2.0-litre four-cylinder petrol engine, developing 208bhp and 258lb ft, with an electric motor mounted within front section of the gearbox housing and producing 114bhp and 251lb ft. All up, it offers combined system outputs of 316bhp and 413lb ft.  There is no manual gearbox, at least during the initial sales phase. Instead there is a standard nine-speed automatic gearbox on the two diesel engines. It receives the latest in fuel-saving functions, including automatic stop-start and brake energy recuperation.Both the GLC220d and GLC250d receive Mercedes-Benz's 4Matic four-wheel drive system as standard.  However, unlike the left-hand-drive models that apportion power in a 45% front, 55% rear split, right-hand-drive UK models come with a 33%/67% front/rear split.  The GLC rides on a four-link front and five-link rear suspension set-up featuring adaptive damping as part of a standard Dynamic Select system that offers the driver the choice between Eco, Comfort, Sport, Sport Plus and Individual modes. The suspension system, which is claimed to be 5kg lighter than that used by the earlier GLK, also comes with optional Air Body Control rear air springs.The air springs feature a new three-chamber design and can be combined with a so-called Off-Road Engineering package, which offrers five off-road driving modes: Slippery, Trailer, Off-road, Incline and Rocking Assist. It also adds hill decent control, underbody protection and adjustable ride height – the latter raising ground clearance from a standard 227mm to 257mm and up to 277mm at speeds below 30mph.

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