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Alfa Romeo Stelvio vs Mercedes GLB comparison

Compare performance (520 HP vs 354 HP), boot space and price (51,900 £ vs 43,200 £ ) at a glance. Find out which car is the better choice for you – Alfa Romeo Stelvio or Mercedes GLB?

Alfa Romeo Stelvio vs Mercedes GLB: Key differences

Alfa Romeo Stelvio

5 (2 Reviews)
rate
  • visibly more power
  • significantly quicker 0–100 km/h
  • marginally lighter
details

Mercedes GLB

3.6 (4 Reviews)
rate
  • clearly cheaper
  • barely more efficient
  • only slightly more trunk space
details

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

Stelvio

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.

Mercedes GLB is clearly cheaper – starting at 43,200 £ , while the Alfa Romeo Stelvio costs 51,900 £ . That’s a price difference of around 8,745 £.

Fuel consumption also shows a difference: the Mercedes GLB uses 5.7 L/100km and is barely more efficient than the Alfa Romeo Stelvio with 6 L/100km. The difference is about 0.3 L/100km.

GLB

Engine and Performance:

Power, torque and acceleration say a lot about how a car feels on the road. This is where you see which model delivers more driving dynamics.

When it comes to engine power, the Alfa Romeo Stelvio offers visibly more power – delivering 520 HP compared to 354 HP. That’s roughly 166 HP more horsepower.

When accelerating from 0 to 100 km/h, the Alfa Romeo Stelvio is significantly quicker – completing the sprint in 3.8 s, while the Mercedes GLB takes 5.5 s. That’s about 1.7 s quicker.

There’s also a difference in torque: the Alfa Romeo Stelvio delivers moderately more torque with 600 Nm compared to 515 Nm. That’s about 85 Nm more.

Stelvio

Space and Everyday Use:

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

Both vehicles offer seating for 5 people.

In terms of curb weight, Alfa Romeo Stelvio is marginally lighter – 1,820 kg compared to 1,840 kg. The difference is around 20 kg.

Looking at boot space, the Mercedes GLB offers only slightly more boot space – 540 L compared to 525 L. That’s a difference of about 15 L.

When it comes to payload, the Alfa Romeo Stelvio carries moderately more – 590 kg compared to 505 kg. That’s a difference of about 85 kg.

Who wins the race in the data check?

The Alfa Romeo Stelvio 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 £51,900
Stelvio

Alfa Romeo Stelvio

  • Engine Type : Diesel, Petrol
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive
  • Power HP : 210 - 520 HP
  • Consumption L/100km : 6 - 11.8 L/100km
details

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Alfa Romeo Stelvio
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Engine and Performance
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Alfa Romeo Stelvio

The Alfa Romeo Stelvio combines Italian artistry with sporty performance, making it a standout in the SUV market. Its dynamic design captures the essence of elegance and agility, while the interior offers a driver-focused experience that enhances every journey. With a perfect blend of luxury and power, the Stelvio is ideal for those seeking both style and substance on the road.

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Reviews Alfa Romeo Stelvio

5 (2 Reviews)
rate

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

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

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Alfa Romeo Stelvio
Mercedes GLB

Costs and Consumption
Price
51,900 - 93,300 £
Price
43,200 - 62,400 £
Consumption L/100km
6 - 11.8 L/100km
Consumption L/100km
5.7 - 6.1 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
15.4 - 15.9 kWh/100km
Electric Range
-
Electric Range
431 - 631 km
Battery Capacity
-
Battery Capacity
-
co2
157 - 267 g/km
co2
0 - 138 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,820 - 1,925 kg
Curb weight
1,840 - 2,280 kg
Trunk capacity
525 L
Trunk capacity
540 L
Length
-
Length
-
Width
1,903 - 1,955 mm
Width
1,861 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
535 - 590 kg
Payload
485 - 505 kg

Engine and Performance
Engine Type
Diesel, Petrol
Engine Type
Electric, Full Hybrid
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Reduction Gearbox
Drive Type
All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
210 - 520 HP
Power HP
156 - 354 HP
Acceleration 0-100km/h
3.8 - 6.6 s
Acceleration 0-100km/h
5.5 - 9.7 s
Max Speed
-
Max Speed
-
Torque
470 - 600 Nm
Torque
280 - 515 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4
Power kW
154 - 382 kW
Power kW
115 - 260 kW
Engine capacity
2,143 - 2,891 cm3
Engine capacity
1,499 cm3

General
Model Year
2,025 - 2,026
Model Year
2026
CO2 Efficiency Class
F, G
CO2 Efficiency Class
A, D, E
Brand
Alfa Romeo
Brand
Mercedes-Benz
Is the Alfa Romeo Stelvio offered with different drivetrains?

The Alfa Romeo Stelvio is offered with 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.