Mercedes-Benz GLB-Class vs Mercedes-Benz GLA45

What's the difference?

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Mercedes-Benz GLB-Class
Mercedes-Benz GLB-Class

$65,400 - $106,228

2026 price

Mercedes-Benz GLA45
Mercedes-Benz GLA45

$49,900 - $76,868

2021 price

Summary

2026 Mercedes-Benz GLB-Class
2021 Mercedes-Benz GLA45
Safety Rating

Engine Type
Turbo 4, 1.3L

Turbo 4, 2.0L
Fuel Type
Premium Unleaded Petrol

Premium Unleaded Petrol
Fuel Efficiency
7.5L/100km (combined)

9.6L/100km (combined)
Seating
7

5
Dislikes
  • More power would be nice
  • Expensive to service
  • Looking dated

  • Very expensive
  • No drift mode
  • USB ports are all Type-C
2026 Mercedes-Benz GLB-Class Summary

A new-generation Mercedes-Benz GLB is just around the corner, so the current model is now on its farewell tour.

When it launched in 2019 it stood out from the crowd as a premium small-to-medium SUV with the flexibility of seven seats. Even now no other premium carmaker offers a car that’s a direct rival to this. You need to look at mainstream options instead that are slightly larger.

A mid-life update that arrived in 2023 brought some minor tweaks including different exterior and interior styling, along with mild-hybrid power for certain variants.

On test here is the entry-level GLB200 which didn’t receive mild-hybrid assistance. Read along to find out whether it’s the pick of the line-up.

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2021 Mercedes-Benz GLA45 Summary

You have to feel a bit sorry for the Mercedes-AMG GLA 45 S. After all, it shares the same platform and engine as the A 45 S and CLA 45 S, but gets none of the limelight.

Maybe it’s because it’s a small SUV, and by virtue of pure physics, it will never be as fast or fun as its two cousins.

But what it does offer is practicality, thanks to a larger boot and comfort, due to its increased suspension travel.

Wouldn’t this make it a better buy then?

We spend some time behind the wheel of the second-generation Mercedes-AMG GLA 45 S to see if can truly have its cake, and eat it too.

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Deep dive comparison

2026 Mercedes-Benz GLB-Class 2021 Mercedes-Benz GLA45

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