Mercedes-Benz GLC (2015) Review

Looking for a Mercedes-Benz GLC (2015 on)?
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Mercedes-Benz GLC (2015) At A Glance

Excellent refinement and very composed ride quality. Quiet diesel engine. Superb cabin quality. Spacious for rear seat passengers. Capable off-road if need be. Revamped with Mild Hybrid in 2019.

High price. Best ride quality depends on optional air suspension. COMAND system is still frustrating to use. Four-seat accommodation only. No room for a spare wheel. Lots of reported problems with steering at low speeds.

New prices start from £36,425
Contract hire deals from £330.49 per month
Insurance Groups are between 27–41
On average it achieves 89% of the official MPG figure

Thanks to Mercedes-Benz’s new and simplified naming convention, it’s easy to understand what the GLC is. It’s a 4x4 (that’s the GL part) that’s loosely based on the C-Class (the C part). It sits between the GLA and GLE in price and dimensions, and it therefore has two obvious rivals in the shape of the Audi Q5 and BMW X3.

There’s plenty of front and rear head and legroom, plus it combines this with absolutely superb all round refinement. Most of the time, driving the GLC feels like driving a big, gentle, luxury SUV - in the best possible way.

It’s the way that Mercedes-Benz has dampened out the outside world that makes that so. There’s very little road or wind noise, even at motorway speed, while engine drone is virtually nonexistent at lower revs.

It’s sometimes difficult to believe that there’s a four-cylinder diesel engine chugging away beneath the bonnet. The only two versions available in the UK, for the first 18 months or so at least, are four-cylinder diesels, badged GLC 220d and GLC 250d. 

There’s a 34PS difference between the two (170PS against 204PS), but not a great deal of performance distinction. Not to worry, because both are quick enough without ever feeling rapid, and they’re both very economical in the context of a big, heavy 4x4, with the same claimed 56.5mpg and 129g/km CO2. That compares favourably to the less powerful base-level Audi Q5 2.0 TDI 150 PS.

The GLC happens to be excellent off road too, though to pull out the well-trodden cliché, it doesn’t really need to be – that it can traverse the roughest, most slanted and slippery terrain is more a demonstration of how well engineered it is than anything else.

With that in mind, the fact it also handles with the finesse of something much smaller is even more impressive. The GLC is, believe it or not, quite enjoyable to drive, thanks to weighty steering and tight body control.

But most importantly, it just feels like a really nice thing on the road. It’s spacious and comfortable and its visibility is excellent. There’s no unwieldiness about it and the cabin – lifted almost directly from the C-Class – is beautiful.

The price you pay is, well, the price, which is generally £2000 to £3000 higher than an equivalent BMW or Audi. Then factor in that the best version of the GLC needs a host of expensive options, and this becomes one pricey mid-sized SUV.

Mercedes Benz GLC 300EQ; 300d; AMG 63S 2019 Range Road Test   

Looking for a Mercedes-Benz GLC (2015 on)?
Register your interest for later or request to be contacted by a dealer to talk through your options now.

Real MPG average for a Mercedes-Benz GLC (2015)

Real MPG was created following thousands of readers telling us that their cars could not match the official figures.

Real MPG gives real world data from drivers like you to show how much fuel a vehicle really uses.

Average performance


Real MPG

18–52 mpg

MPGs submitted


Diesel or petrol? If you're unsure whether to go for a petrol or diesel (or even an electric model if it's available), then you need our Petrol or Diesel? calculator. It does the maths on petrols, diesels and electric cars to show which is best suited to you.


The wheels on my car feel like they're clunking. Is this characteristic of the model?
I bought a new facelifted Mercedes-Benz GLC 300d in August 2019. It feels like the wheels are skipping, which the Mercedes dealer recognised in March 2020. Due to Covid-19, the dealer wanted to revisit the issue again in June 2020 and has said - after testing the car - that there’s nothing wrong with it, saying it’s a characteristic of the car. Is there anything I can do? Thanks.
Crabbing is a known issue on the GLC: Ask for a set off all-season tyres. They're meant to fix the issue and Mercedes-Benz has provided them free of charge in the past.
Answered by Andrew Brady
Should I keep or swap my diesel car for an electric model?
The lease on my Mercedes-Benz GLC is up in a few months and I’m tempted to buy it at £23,000 with only 30,000 on the clock. Before, it would still be worth something in another three years time. But given current views of diesel, would it hold any value? Would I be better looking at a new I-Pace in the hope battery range will increase within a couple of years?
It depends what you use your car for, really. We wouldn't recommend changing your GLC for an i-Pace if you cover lots of long motorway journeys. Equally, it might be wise to change your car if you cover lots of short journeys which aren't suited to a diesel. It's difficult to say what's going to happen to residual values for diesel cars but, if anything, the drop in new diesels being bought today might mean there's more demand for second-hand examples in the future. As a compromise, we'd suggest swapping your GLC for a newer version, perhaps with a petrol engine.
Answered by Andrew Brady
What should I replace my ageing Mercedes-Benz E-Class with?
I presently have an E Class E320 CDI sport auto. I love it but it's a 2007 reg and has done 82,000 miles. What should I replace it with?
The obvious choice is another E-Class. The current model is a lovely car, although it's fairly big. Many buyers are now moving towards SUVs - you could also look the Mercedes-Benz GLC or GLE. I'd also recommend visiting a Volvo dealer - most of their range is very good, especially SUVs like the XC40 and XC60.
Answered by Andrew Brady
I got a cracked alloy welded rather than replaced - could this invalidate my insurance?
When my Mercedes-Benz C-Class was about three months old, during a safety check, the dealer discovered one of the rear wheels was cracked (pot hole I guess - but no loss of pressure). Rather than pay £600 for a new one, I paid a local specialist welding company to repair it. The car is now just over three years old and I was told recently this could invalidate my insurance in the event of an accident. Is this correct?
If you had an accident as a result of the wheel failing, then yes, technically you could have your insurance invalidated because you were aware of it. Welding alloys is a big no, I definitely would never have it done. If it is fractured, bin it. Imagine if your wheel failed and, as a result, it killed somebody for the sake of £600. Has the repaired alloy been x-rayed or dye tested? Aluminum needs to be stuck in an oven to get extremely hot before being welded, especially if it cast/forged. Few specialists have the facilities to do this.
Answered by Tim Kelly

What does a Mercedes-Benz GLC (2015) cost?

Contract hire from £330.49 per month
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