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Mercedes GLB vs Vauxhall Rocks Electric comparison

Compare performance (354 HP vs 8 HP), boot space and price (43,200 £ vs 6,800 £ ) at a glance. Find out which car is the better choice for you – Mercedes GLB or Vauxhall Rocks Electric?

Mercedes GLB vs Vauxhall Rocks Electric: Key differences

Mercedes GLB

3.6 (4 Reviews)
rate
  • significantly more power
  • clearly more electric range
  • significantly more trunk space
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Vauxhall Rocks Electric

  • considerably cheaper
  • considerably 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.

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

GLB

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

Vauxhall Rocks Electric is considerably cheaper – starting at 6,800 £ , while the Mercedes GLB costs 43,200 £ . That’s a price difference of around 36,349 £.

As for electric range, the Mercedes GLB offers clearly more range – reaching up to 631 km, about 556 km more than the Vauxhall Rocks Electric.

Rocks Electric

Engine and Performance:

Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.

When it comes to engine power, the Mercedes GLB offers significantly more power – delivering 354 HP compared to 8 HP. That’s roughly 346 HP more horsepower.

There’s also a difference in torque: the Mercedes GLB delivers clearly more torque with 515 Nm compared to 40 Nm. That’s about 475 Nm more.

GLB

Space and Everyday Use:

Whether family car or daily driver – which one offers more room, flexibility and comfort?

Seats: Mercedes GLB offers more seats – 5 vs 2.

In terms of curb weight, Vauxhall Rocks Electric is considerably lighter – 558 kg compared to 1,840 kg. The difference is around 1,282 kg.

Looking at boot space, the Mercedes GLB offers significantly more boot space – 540 L compared to 63 L. That’s a difference of about 477 L.

When it comes to payload, the Mercedes GLB carries considerably more – 505 kg compared to 142 kg. That’s a difference of about 363 kg.

Who wins the race in the data check?

The Vauxhall Rocks Electric holds a decisive overall lead 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 £6,800
Rocks Electric

Vauxhall Rocks Electric

  • Engine Type Electric
  • Transmission Automatic
  • Drive Type Front-Wheel Drive
  • Power HP 8 HP
  • Electric Range 75 km
details

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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
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Vauxhall Rocks Electric

The Opel Rocks Electric is a cheeky urban crossover that swaps petrol fuss for an electric grin, offering compact practicality and a playful character for city life. It’s easy to live with, delivers quietly eager acceleration for everyday driving, and feels like a smart, approachable choice for buyers dipping their toes into EV ownership.

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Reviews Vauxhall Rocks Electric

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

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Vauxhall Rocks Electric

Costs and Consumption
Price
43,200 - 62,400 £
Price
6,800 - 7,500 £
Consumption L/100km
5.7 - 6.1 L/100km
Consumption L/100km
-
Consumption kWh/100km
15.4 - 15.9 kWh/100km
Consumption kWh/100km
-
Electric Range
431 - 631 km
Electric Range
75 km
Battery Capacity
-
Battery Capacity
-
co2
0 - 138 g/km
co2
0 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
Hatchback
Seats
5
Seats
2
Doors
-
Doors
-
Curb weight
1,840 - 2,280 kg
Curb weight
558 kg
Trunk capacity
540 L
Trunk capacity
63 L
Length
-
Length
-
Width
1,861 mm
Width
1,388 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
485 - 505 kg
Payload
142 kg

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

General
Model Year
2026
Model Year
2025
CO2 Efficiency Class
A, D, E
CO2 Efficiency Class
A
Brand
Mercedes-Benz
Brand
Vauxhall
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.