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Mercedes GLA vs Mercedes GLB comparison

Compare performance (421 HP vs 354 HP), boot space and price (38,800 £ vs 50,600 £ ) at a glance. Find out which car is the better choice for you – Mercedes GLA or Mercedes GLB?

Mercedes GLA vs Mercedes GLB: Key differences

Mercedes GLA

4.6 (3 Reviews)
rate
  • markedly cheaper
  • somewhat more power
  • visibly quicker 0–100 km/h
  • substantially lighter

Mercedes GLB

3.2 (3 Reviews)
rate
  • substantially more electric range
  • moderately more trunk space

All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.

Here’s where it gets real: The technical differences in detail

GLA

Costs and Efficiency:

Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.

Mercedes GLA is markedly cheaper – starting at 38,800 £ , while the Mercedes GLB costs 50,600 £ . That’s a price difference of around 11,776 £.

As for electric range, the Mercedes GLB offers substantially more range – reaching up to 631 km, about 557 km more than the Mercedes GLA.

GLB

Engine and Performance:

Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.

When it comes to engine power, the Mercedes GLA offers somewhat more power – delivering 421 HP compared to 354 HP. That’s roughly 67 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes GLA is visibly quicker – completing the sprint in 4.3 s, while the Mercedes GLB takes 5.5 s. That’s about 1.2 s quicker.

There’s also a difference in torque: the Mercedes GLB delivers only slightly more torque with 515 Nm compared to 500 Nm. That’s about 15 Nm more.

GLA

Space and Everyday Use:

Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.

Both vehicles offer seating for 5 people.

In terms of curb weight, Mercedes GLA is substantially lighter – 1,570 kg compared to 2,200 kg. The difference is around 630 kg.

Looking at boot space, the Mercedes GLB offers moderately more boot space – 540 L compared to 435 L. That’s a difference of about 105 L.

Maximum payload is identical – both can carry up to 500 kg.

Who wins the race in the data check?

The Mercedes GLB is decisively ahead in the objective data comparison.
This result only shows which model scores more points on paper – not which of the two cars feels right for you.

from £50,600
GLB

Mercedes GLB

  • Engine Type : Electric
  • Transmission : Automatic
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 272 - 354 HP
  • Consumption kWh/100km : 15.8 - 15.9 kWh/100km
  • Electric Range : 614 - 631 km
details

Frequently compared as well

Mercedes B Class
Mercedes GLA
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The Mercedes B‑Class is the practical, airy people‑carrier that prioritises space and comfort, while the Mercedes GLA takes the same mechanical smarts and adds SUV looks, higher ride height and a touch more road presence. Pick the B‑Class for family‑friendly sense and efficiency, choose the GLA if …
Mercedes A Class
Mercedes GLA
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The Mercedes A‑Class is the sharper, more driver-focused hatch that feels nimble and refined on twisty roads, while the Mercedes GLA trades a bit of agility for SUV practicality with a higher ride height, extra luggage space and a commanding view of the road. Pick the A‑Class for sporty handling, …
Mercedes GLA
Mercedes GLB

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes GLA

The Mercedes GLA blends Mercedes style with compact crossover practicality, looking sharper than its size suggests while still feeling purposeful around town. Inside it serves up premium materials and tech-forward ergonomics, and the composed ride makes it an appealing pick for buyers who want luxury wrapped in a city-friendly package with a wink of adventurous spirit.

details
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Reviews Mercedes GLA

4.6 (3 Reviews)
rate
Gutter
24 Feb 2026, 21:53:27

Super nimble, very impressive power from this 1,300cc mild‑hybrid engine — in town, on the road and on the motorway for this 2025 GLA 180 Style AMG... premium interior!

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Serge
16 Jan 2026, 16:09:11

You have to compare like with like — the GLA should be compared to the Q3, not the Q2 as in your study!

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

Mercedes GLB

The Mercedes GLB is a practical compact SUV that mixes boxy, family-friendly space with premium German polish, making it an appealing choice for buyers who want usefulness without pretension. It drives with a confident, composed feel and somehow manages to look both rugged and refined — the grown-up SUV that still likes to have fun.

details
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Reviews Mercedes GLB

3.2 (3 Reviews)
rate
Hans
19 Feb 2026, 02:39:00

Great car — very satisfied with the GLB 250 4MATIC.

How do you mainly use this car? (optional): Leisure / Weekend driver
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

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In one corner is the Mercedes EQB — the battery-powered, future-facing sibling that promises silent, zero-emission drives; in the other, the Mercedes GLB — the boxy, practical all‑rounder that still gets the job done on family runs. Which should you pick for your driveway: the EQB for city-slick, …
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Audi Q2
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In the competitive compact SUV segment, the Audi Q2 stands out with its youthful design and engaging driving dynamics, appealing to those who prioritize style and performance. Meanwhile, the Mercedes GLA offers a more luxurious experience with its refined interior and advanced technology features, …
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Mercedes GLB

Costs and Consumption
Price
38,800 - 75,300 £
Price
50,600 - 62,400 £
Consumption L/100km
2.9 - 9.5 L/100km
Consumption L/100km
-
Consumption kWh/100km
-
Consumption kWh/100km
15.8 - 15.9 kWh/100km
Electric Range
74 km
Electric Range
614 - 631 km
Battery Capacity
12.9 kWh
Battery Capacity
-
co2
66 - 216 g/km
co2
0 g/km
Fuel tank capacity
35 L
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
5
Seats
5
Doors
5
Doors
-
Curb weight
1,570 - 1,810 kg
Curb weight
2,200 - 2,280 kg
Trunk capacity
385 - 435 L
Trunk capacity
540 L
Length
4,412 mm
Length
-
Width
1,834 - 1,849 mm
Width
1,861 mm
Height
1,616 mm
Height
-
Max trunk capacity
1,385 L
Max trunk capacity
-
Payload
480 - 500 kg
Payload
500 kg

Engine and Performance
Engine Type
Plugin Hybrid, Petrol MHEV, Diesel, Petrol
Engine Type
Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Reduction Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
116 - 421 HP
Power HP
272 - 354 HP
Acceleration 0-100km/h
4.3 - 11 s
Acceleration 0-100km/h
5.5 - 7.4 s
Max Speed
210 km/h
Max Speed
-
Torque
230 - 500 Nm
Torque
335 - 515 Nm
Number of Cylinders
4
Number of Cylinders
-
Power kW
85 - 310 kW
Power kW
200 - 260 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
-

General
Model Year
2,024 - 2,025
Model Year
2,026
CO2 Efficiency Class
B, E, F, G
CO2 Efficiency Class
A
Brand
Mercedes-Benz
Brand
Mercedes-Benz
Is the Mercedes GLA offered with different drivetrains?

The Mercedes GLA is available as Front-Wheel Drive or All-Wheel Drive.

DriveDuel uses data analysis and artificial intelligence to evaluate vehicle data and create content. Content is regularly reviewed and improved. The displayed prices are estimates based on German list prices, adjusted to the respective country’s VAT. Country-specific registration taxes are not included. This information is not legally binding.