Mercedes-Benz GLB-Class vs Mercedes-Benz S400

What's the difference?

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

$65,400 - $106,228

2026 price

Mercedes-Benz S400
Mercedes-Benz S400

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2018 price

Summary

2026 Mercedes-Benz GLB-Class
2018 Mercedes-Benz S400
Safety Rating

Engine Type
Turbo 4, 1.3L

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Fuel Type
Premium Unleaded Petrol

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Fuel Efficiency
7.5L/100km (combined)

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Seating
7

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

  • Some terseness from run-flat tyres
  • Controls could be simpler
  • Non L models not that spacious in the back
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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2018 Mercedes-Benz S400 Summary

Imagine a car that can pretty much drive itself, if you let it. And it’ll do that while you get a massage, pump some Beyonce, and enjoy the fragrance of a field full of flowers… And then, it can teach you to do stretches and exercises in the driver’s seat.

It may sound like fictional fiction, but it’s factual fact. And it’s the Mercedes-Benz S-Class 2018 model, which has taken the so-called ‘wellbeing’ of the driver to a new level.

The facelifted model has seen plenty of styling changes and some tech upgrades, and while making the flagship car in a particular brand’s line-up is often a task fraught with issues, the German company’s big, expensive, luxurious, limousine is undoubtedly a more thoughtful car for 2018.

But just remember, its predecessor was considered - at least for a little while - as the best car in the world by some automotive journalists. 

Now Mercedes-Benz has updated it, and it reckons it’s better than before, bringing a bunch of new technology, new engines, a reworked model range and, perhaps not essentially, but still pleasantly, lower pricing.

Read on to see how Beyonce factors into the equation.

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Deep dive comparison

2026 Mercedes-Benz GLB-Class 2018 Mercedes-Benz S400

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