2026 Mercedes-Benz GLB 350 4Matic real life range test with 19-inch wheels and summer tires
Three-row SUVs are hardly your first thought when picking a car for urban driving, yet the Mercedes-Benz GLB 350 4Matic aims to change that. It combines seating for up to seven occupants with compact exterior dimensions, offering a practical solution for larger families that still need a vehicle suited to everyday city use.
Mercedes brought the premium refinement expected of the brand into this segment. Rather than feeling like a compromise for the sake of practicality, the GLB delivers a genuinely upscale experience, allowing you to enjoy the benefits of a smaller footprint without sacrificing comfort, quality or everyday usability.
Today we are testing how efficient the Mercedes-Benz GLB 350 4Matic is and if it's actually able to travel as far as Mercedes promises. The important figures for today’s test are the 85 kWh usable battery capacity, 354 hp transferred to all four wheels and a rather ordinary drag coefficient of 0.28 Cd. The wheel setup includes 19-inch AMG wheels and summer Michelin Primacy 5 Energy tires, which should give optimal figures for the model.
We already tested the Mercedes-Benz CLA 350 4Matic, which uses the same powertrain and produced outstanding efficiency results. The larger and heavier GLB is not expected to match that, but lets us know how much the extra space will cost you in terms of range.
Our thorough review with all important details about the Mercedes GLB is coming soon, but today our only focus will be range and efficiency.
Based on the values we get in the testing, we are able to provide a real world range widget. You can use it to simulate a wide variety of conditions and adapt the values to your liking in order to check out how the car will perform in different scenarios.
We drove our usual test routes, doing the same track both ways at constant speeds at the same place as with every other car we test. The ambient temperature while testing the 2026 Mercedes-Benz GLB 350 4Matic was 66°F, only a couple degrees off the best possible conditions for such testing.
At our lowest testing speed of 37 mph, the GLB performs almost identically with the CLA. This accounts for tremendous efficiency of the powertrains and allows the GLB 350 4Matic to travel huge distances on a single charge. Of course, in the real world, nobody would actually drive at that pace for that long but it’s still impressive to see what is theoretically possible.
Range test results
- 37 mph
- 56 mph
- 81 mph
Mercedes CLA 350 4Matic
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Mercedes-Benz GLB 350 4Matic
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Mini Countryman SE ALL4
When we speed up to 56 mph, the GLB starts consuming a bit more than the CLA. But even as aerodynamics start coming into play, the GLB still outperforms all other three-row SUVs and that once again displays how wonderfully efficient the model is. It compares with smaller and more aerodynamic models, rather than the ones it directly rivals in terms of seating and luggage space.
At the highest testing speed of 81 mph,the Mercedes-Benz GLB 350 4Matic inevitably feels the effects of its taller body and larger frontal area. It strays further away from the CLA and that is completely normal. However, when it comes to SUVs, the GLB is just about the most efficient one we've ever tested at highway speeds, which is tremendously impressive and highly important if you're planning to frequently travel on longer journeys.
Our overall impression of the Mercedes-Benz GLB 350 4Matic's range is still very positive. Its large battery (for the size) and impressive efficiency allow it to travel substantial distances on a single charge regardless of driving conditions, making it a dependable companion for everyday use and longer journeys alike.
Fast charging is another major strength that complements the GLB's long list of advantages, making long distance travel even more convenient. Excelling in both charging speed and driving range allows the Mercedes-Benz GLB 350 4Matic to establish itself as a dependable and highly capable companion for extended journeys.
You can use the widget below to find out the 2026 Mercedes-Benz GLB 350 4Matic’s range in every combination of speed and temperature you might need. We've used our real world tests and a complex model to provide an estimate that should be as close to the actual performance as possible.
From the team behind
GSMArena.com
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