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Mercedes GLB vs Subaru Impreza comparison

Compare performance (354 HP vs 136 HP), boot space and price (43,200 £ vs 30,200 £ ) at a glance. Find out which car is the better choice for you – Mercedes GLB or Subaru Impreza?

Mercedes GLB vs Subaru Impreza: Key differences

Mercedes GLB

3.6 (4 Reviews)
rate
  • significantly more power
  • noticeably more efficient
  • clearly quicker 0–100 km/h
  • substantially more trunk space
details

Subaru Impreza

5 (1 Reviews)
rate
  • significantly cheaper
  • moderately lighter
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All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.

By Achim Sedelmaier

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

GLB

Costs and Efficiency:

When it comes to price and running costs, the biggest differences usually appear. This is often where you see which car fits your budget better in the long run.

Subaru Impreza is significantly cheaper – starting at 30,200 £ , while the Mercedes GLB costs 43,200 £ . That’s a price difference of around 12,975 £.

Fuel consumption also shows a difference: the Mercedes GLB uses 5.7 L/100km and is noticeably more efficient than the Subaru Impreza with 7.3 L/100km. The difference is about 1.6 L/100km.

Impreza

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 GLB offers significantly more power – delivering 354 HP compared to 136 HP. That’s roughly 218 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes GLB is clearly quicker – completing the sprint in 5.5 s, while the Subaru Impreza takes 10.6 s. That’s about 5.1 s quicker.

There’s also a difference in torque: the Mercedes GLB delivers substantially more torque with 515 Nm compared to 182 Nm. That’s about 333 Nm more.

GLB

Space and Everyday Use:

Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.

Both vehicles offer seating for 5 people.

In terms of curb weight, Subaru Impreza is moderately lighter – 1,574 kg compared to 1,840 kg. The difference is around 266 kg.

Looking at boot space, the Mercedes GLB offers substantially more boot space – 540 L compared to 315 L. That’s a difference of about 225 L.

When it comes to payload, the Subaru Impreza carries marginally more – 526 kg compared to 505 kg. That’s a difference of about 21 kg.

Who wins the race in the data check?

The Mercedes GLB is clearly superior overall 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 £43,200
GLB

Mercedes GLB

  • Engine Type : Electric, Full Hybrid
  • Transmission : Automatic
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 156 - 354 HP
  • Consumption L/100km : 5.7 - 6.1 L/100km
  • Consumption kWh/100km : 15.4 - 15.9 kWh/100km
  • Electric Range : 431 - 631 km
details

Frequently compared as well

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Mercedes GLB
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes GLB

The Mercedes GLB is a compact luxury SUV that blends smart packaging with a polished, composed driving experience. Its flexible interior and premium feel make it a sensible pick for buyers who want Mercedes comfort and practicality in a smaller footprint.

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Reviews Mercedes GLB

3.6 (4 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

Subaru Impreza

The Subaru Impreza feels like a trusty companion built for everyday adventures, shrugging off bad weather and awkward parking with quiet competence. It won't win any style contests, but its sensible cabin, grippy manners, and honest driving character make it a smart pick for buyers who prefer substance over flash.

details
csm_24MY_Impreza_Sport_-_3_33d643cf2c

Reviews Subaru Impreza

5 (1 Reviews)
rate

No reviews yet. Share your experience and help others decide.

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Subaru Impreza

Costs and Consumption
Price
43,200 - 62,400 £
Price
30,200 - 32,500 £
Consumption L/100km
5.7 - 6.1 L/100km
Consumption L/100km
7.3 L/100km
Consumption kWh/100km
15.4 - 15.9 kWh/100km
Consumption kWh/100km
-
Electric Range
431 - 631 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
0 - 138 g/km
co2
166 g/km
Fuel tank capacity
-
Fuel tank capacity
48 L

Dimensions and Body
Body Type
SUV
Body Type
Hatchback
Seats
5
Seats
5
Doors
-
Doors
5
Curb weight
1,840 - 2,280 kg
Curb weight
1,574 - 1,599 kg
Trunk capacity
540 L
Trunk capacity
315 L
Length
-
Length
4,490 mm
Width
1,861 mm
Width
1,780 mm
Height
-
Height
1,515 mm
Max trunk capacity
-
Max trunk capacity
1,297 - 1,314 L
Payload
485 - 505 kg
Payload
501 - 526 kg

Engine and Performance
Engine Type
Electric, Full Hybrid
Engine Type
Petrol MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Reduction Gearbox
Transmission Detail
CVT
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
156 - 354 HP
Power HP
136 HP
Acceleration 0-100km/h
5.5 - 9.7 s
Acceleration 0-100km/h
10.6 s
Max Speed
-
Max Speed
199 km/h
Torque
280 - 515 Nm
Torque
182 Nm
Number of Cylinders
4
Number of Cylinders
4
Power kW
115 - 260 kW
Power kW
100 kW
Engine capacity
1,499 cm3
Engine capacity
1,995 cm3

General
Model Year
2026
Model Year
2024
CO2 Efficiency Class
A, D, E
CO2 Efficiency Class
F
Brand
Mercedes-Benz
Brand
Subaru
What drive types are available for the Mercedes GLB?

Available configurations include Rear-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.