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In-depth reviews

Mercedes GLB review - Practicality, comfort & boot space

More practical than the more expensive GLC, the GLB has the option of a third row of seats

Overall Auto Express Rating

4.0 out of 5

Practicality, comfort and boot space Rating

4.5 out of 5

Price
£38,685 to £53,080
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The GLB is almost identical in size to the GLC, so you might be wondering why you’d consider the more expensive SUV. The short answer is that they cater to different audiences. The GLB puts practicality ahead of premium qualities, which is why it comes with seven seats. It’s a more family-friendly take on the GLC formula – and it’s all the better for it.

Size 

The Mercedes-Benz GLB is 4,634mm long and 2,020mm wide, including the door mirrors. Thanks to its larger bumpers, the GLB 35 4Matic is actually 16mm longer than the standard GLB.

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There’s little difference between the size of the GLB and the supposedly larger GLC. In fact, the GLC is 4,663mm long and 2,096mm wide. 

Leg room, head room & passenger space

Although the seats in the third row are useful for children or occasional use, the GLB isn’t a true seven-seater. If your children are beyond their early teens, they won’t thank you for subjecting them to a long journey in the cheap seats.

Even adults will find plenty of room in the middle row. There’s lots of headroom and legroom for passengers in the outer seats, while the raised position of the front seats means there’s plenty of room for even the largest feet. Even the middle seat is fine for adults, with only a shallow transmission tunnel preventing the GLB from getting full marks.

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The GLB’s boxy dimensions provide lots of headroom up front. This means you can raise the seats to the limit and still have plenty of space. In doing so, you can create the commanding driving position favoured by many SUV drivers.

Boot 

Luggage capacity in the five-seat GLB is 570 litres, which is actually 20 litres more than you get in the larger Mercedes-Benz GLC. Opt for the seven-seat option and the figure drops to a still-generous 500 litres when the rear two seats are folded away.

An electric tailgate is fitted as standard, which lifts to reveal a wide and square opening that makes it easy to load heavy items. Not that you’ll get much in the back with all seven seats in use – there’s enough room for a couple of rucksacks or a few bags of shopping.

Things are much better in five-seat mode, with the third row folding away to create a flat floor with a flush loading lip. The middle seat in the second row also folds down, which is handy for carrying longer loads or a pair of skis.

Towing

The GLB 200 d and 220 d 4Matic models have a braked towing capacity of 2,000kg. The two-wheel-drive GLB 200 d, GLB 200 and GLB 35 4Matic can tow up to 1,800kg. Pre-installation for trailer coupling is standard on all except the entry-level AMG Line model. A tow bar can be ordered from a Mercedes-Benz dealer.

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Which Is Best

Cheapest

  • Name
    GLB 200 Sport 5dr 7G-Tronic
  • Gearbox type
    Semi-auto
  • Price
    £33,770

Most Economical

  • Name
    GLB 200d AMG Line 5dr 8G-Tronic
  • Gearbox type
    Semi-auto
  • Price
    £37,220

Fastest

  • Name
    GLB 220d 4Matic AMG Line 5dr 8G-Tronic
  • Gearbox type
    Semi-auto
  • Price
    £40,370
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