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Alfa Romeo Stelvio vs Mercedes B Class comparison

Compare performance (520 HP vs 238 HP), boot space and price (51,900 £ vs 33,100 £ ) at a glance. Find out which car is the better choice for you – Alfa Romeo Stelvio or Mercedes B Class?

Alfa Romeo Stelvio vs Mercedes B Class: Key differences

Alfa Romeo Stelvio

4.6 (3 Reviews)
rate
  • clearly more power
  • significantly quicker 0–100 km/h
  • slightly more trunk space
details

Mercedes B Class

4.9 (6 Reviews)
rate
  • significantly cheaper
  • somewhat more efficient
  • markedly lighter
details

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

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 B Class is significantly cheaper – starting at 33,100 £ , while the Alfa Romeo Stelvio costs 51,900 £ . That’s a price difference of around 18,813 £.

Fuel consumption also shows a difference: the Mercedes B Class uses 5.1 L/100km and is somewhat more efficient than the Alfa Romeo Stelvio with 6 L/100km. The difference is about 0.9 L/100km.

B Class

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 Alfa Romeo Stelvio offers clearly more power – delivering 520 HP compared to 238 HP. That’s roughly 282 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 B Class takes 6.5 s. That’s about 2.7 s quicker.

There’s also a difference in torque: the Alfa Romeo Stelvio delivers clearly more torque with 600 Nm compared to 400 Nm. That’s about 200 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, Mercedes B Class is markedly lighter – 1,405 kg compared to 1,820 kg. The difference is around 415 kg.

Looking at boot space, the Alfa Romeo Stelvio offers slightly more boot space – 525 L compared to 455 L. That’s a difference of about 70 L.

When it comes to payload, the Alfa Romeo Stelvio carries very slightly more – 590 kg compared to 550 kg. That’s a difference of about 40 kg.

Who wins the race in the data check?

The Alfa Romeo Stelvio is far ahead 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 £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

Frequently compared as well

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Alfa Romeo Stelvio
Mercedes B Class

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Alfa Romeo Stelvio

The Stelvio is a sporty, characterful compact SUV that pairs striking Italian design with a driver-focused feel you don’t often find in this class. Its cabin mixes distinctive styling and usable practicality, making it a great choice for buyers who want engaging driving dynamics without sacrificing everyday comfort.

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Reviews Alfa Romeo Stelvio

4.6 (3 Reviews)
rate
Graham
26 May 2026, 13:31:02

Style & finish

Mercedes B Class

The Mercedes B-Class is a smart, grown-up compact people carrier that dresses everyday practicality in a near‑premium polish, perfect for buyers who want comfort and a classy badge without the theatrics. It won’t set your pulse racing on a back road, but it will make school runs, commutes and grocery hauls feel pleasantly civilized — a reliable, slightly posh companion for real life.

details
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Reviews Mercedes B Class

4.9 (6 Reviews)
rate
SiBa
31 Jul 2026, 14:51:34

We've been driving only the B180D automatic for 9 years — there's nothing better. Great on long trips; the next one will be another B180D automatic.

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Safety
Practicality / Trunk & Everyday Use
Value for Money
Peter
5 Mar 2026, 05:51:19

My wife and I have been driving a Mercedes W247 200d for seven years now, with 93,000 km on the clock. The car is very comfortable even on long trips and economical. At the last service the pads of the electric parking brake were replaced; otherwise no repairs. We love this car.

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

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Alfa Romeo Stelvio
Mercedes B Class

Costs and Consumption
Price
51,900 - 93,300 £
Price
33,100 - 52,500 £
Consumption L/100km
6 - 11.8 L/100km
Consumption L/100km
5.1 - 6.9 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
157 - 267 g/km
co2
133 - 156 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
MPV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,820 - 1,925 kg
Curb weight
1,405 - 1,565 kg
Trunk capacity
525 L
Trunk capacity
445 - 455 L
Length
-
Length
-
Width
1,903 - 1,955 mm
Width
1,796 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
535 - 590 kg
Payload
515 - 550 kg

Engine and Performance
Engine Type
Diesel, Petrol
Engine Type
Petrol MHEV, Diesel
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
All-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
210 - 520 HP
Power HP
116 - 238 HP
Acceleration 0-100km/h
3.8 - 6.6 s
Acceleration 0-100km/h
6.5 - 10 s
Max Speed
-
Max Speed
-
Torque
470 - 600 Nm
Torque
200 - 400 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4
Power kW
154 - 382 kW
Power kW
85 - 175 kW
Engine capacity
2,143 - 2,891 cm3
Engine capacity
1,332 - 1,991 cm3

General
Model Year
2,025 - 2,026
Model Year
2025
CO2 Efficiency Class
F, G
CO2 Efficiency Class
D, E, F
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.