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Alfa Romeo Stelvio vs Mercedes GLA comparison

Compare performance (520 HP vs 421 HP), boot space and price (51,900 £ vs 38,800 £ ) at a glance. Find out which car is the better choice for you – Alfa Romeo Stelvio or Mercedes GLA?

Alfa Romeo Stelvio vs Mercedes GLA: Key differences

Alfa Romeo Stelvio

5 (2 Reviews)
rate
  • a bit more power
  • slightly quicker 0–100 km/h
  • slightly more trunk space
details

Mercedes GLA

4.5 (4 Reviews)
rate
  • noticeably cheaper
  • considerably more efficient
  • somewhat 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.

By Achim Sedelmaier

Stelvio

Alfa Romeo Stelvio vs. Mercedes GLA: A Robust Yet Elegant Showdown

In the dynamic world of SUVs, two names stand out for their blend of style, performance, and innovation: Alfa Romeo's Stelvio and Mercedes-Benz's GLA. These models exemplify cutting-edge technology and design prowess, appealing to drivers who appreciate power and luxury. Let's dive into a comparison of these remarkable vehicles, focusing on their technical intricacies and innovations.

GLA

Power and Performance

When it comes to raw power, the Alfa Romeo Stelvio has an edge with a potent lineup of engines, offering up to 520 HP from its most robust version. With acceleration from 0 to 100 km/h in just 3.8 seconds and a top speed of 285 km/h, the Stelvio is engineered for speed enthusiasts. Its all-wheel-drive capability enhances traction and stability, making it a thrilling drive on both highways and rugged terrains.

In comparison, the Mercedes GLA offers a range of powertrains, with the top-tier models delivering up to 421 HP and a brisk acceleration time of 4.3 seconds. The GLA provides options for both front-wheel and all-wheel drive, making it versatile in various driving conditions. Its maximum speed reaches 270 km/h, slightly lower than the Stelvio, but it compensates with smoother handling and ride comfort.

Stelvio

Technological Innovations

Both the Stelvio and GLA come equipped with advanced technology. The Stelvio features an automatic gearbox, contributing to its seamless and responsive driving experience. It also integrates various driver assistance systems that enhance safety and comfort. The GLA, meanwhile, is characterized by its dual-clutch automatic transmission, offering rapid gear shifts and efficient power distribution. Mercedes-Benz also impresses with its MBUX infotainment system, known for its intuitive AI capabilities and user-friendly interface.

GLA

Fuel Efficiency and Sustainability

Efficiency and environmental consciousness are increasingly important factors for modern consumers. The Stelvio provides fuel consumption figures ranging from 6 to 11.8 L/100km, with CO2 emissions between 157 and 267 g/km. Though primarily designed for performance, the efficiency of its diesel variant stands out.

Conversely, the Mercedes GLA showcases impressive fuel economy, particularly with its Plugin Hybrid offering, which sips just 1.1 L/100km and boasts an electric range of up to 74 km. The hybrid powertrain significantly reduces emissions, positioning the GLA as a greener choice without sacrificing agility or performance.

Stelvio

Design and Practicality

The design language of both SUVs garners attention; the Stelvio's bold Italian flair merges elegance with sportiness, while the GLA embodies Mercedes-Benz's refined yet assertive aesthetic. Dimension-wise, the Stelvio offers a slightly longer and wider body, translating to a more spacious interior with a trunk capacity of 525 liters, compared to the GLA's 435 liters.

Both models comfortably seat five passengers, ensuring that neither sacrifices comfort for style. The Stelvio, with its higher curb weight, conveys a sense of solidity and strength, whereas the lighter GLA emphasizes nimbleness and efficiency.

GLA

Conclusion: The Driving Experience Awaits

Choosing between the Alfa Romeo Stelvio and the Mercedes GLA depends heavily on priorities. If your heart races for performance metrics and spirited Italian design, the Stelvio beckons. Meanwhile, the GLA's blend of versatility, innovative hybrid technology, and distinctive luxury could tip the scales for those prioritizing sustainability and technological advancements.

Ultimately, both the Stelvio and GLA are champions in their own rights, melding luxury with performance in the ever-evolving SUV arena. Whichever road you travel, rest assured your journey will be one of unparalleled style and sophistication.

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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 GLA is noticeably cheaper – starting at 38,800 £ , while the Alfa Romeo Stelvio costs 51,900 £ . That’s a price difference of around 13,106 £.

Fuel consumption also shows a difference: the Mercedes GLA uses 2.9 L/100km and is considerably more efficient than the Alfa Romeo Stelvio with 6 L/100km. The difference is about 3.1 L/100km.

GLA

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 a bit more power – delivering 520 HP compared to 421 HP. That’s roughly 99 HP more horsepower.

When accelerating from 0 to 100 km/h, the Alfa Romeo Stelvio is slightly quicker – completing the sprint in 3.8 s, while the Mercedes GLA takes 4.3 s. That’s about 0.5 s quicker.

There’s also a difference in torque: the Alfa Romeo Stelvio delivers a bit more torque with 600 Nm compared to 500 Nm. That’s about 100 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 GLA is somewhat lighter – 1,570 kg compared to 1,820 kg. The difference is around 250 kg.

Looking at boot space, the Alfa Romeo Stelvio offers slightly more boot space – 525 L compared to 435 L. That’s a difference of about 90 L.

When it comes to payload, the Alfa Romeo Stelvio carries slightly more – 590 kg compared to 500 kg. That’s a difference of about 90 kg.

Who wins the race in the data check?

The Mercedes GLA stands well ahead of its rival 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 £38,800
GLA

Mercedes GLA

  • Engine Type : Petrol MHEV, Plugin Hybrid, Diesel, Petrol
  • Transmission : Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 116 - 421 HP
  • Consumption L/100km : 2.9 - 9.5 L/100km
  • Electric Range : 74 km
details
Alfa Romeo Stelvio
Mercedes GLA

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

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 GLA

The Mercedes GLA is a compact luxury crossover that brings Mercedes-Benz's refined design and premium cabin materials into a practical, city-friendly package. It combines comfortable ride quality and intuitive tech with poised handling, making it a confident choice for everyday driving and longer journeys.

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20C0047_115

Reviews Mercedes GLA

4.5 (4 Reviews)
rate
Lucien
1 May 2026, 07:12:24

GLA 180 petrol. Ideal for city and highway. Very smooth and quiet. The automatic gearbox is a delight. Average consumption 6.2 L/100 km. Special edition 180 Cyber Edition, leather seats....

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
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
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Alfa Romeo Stelvio
Mercedes GLA

Costs and Consumption
Price
51,900 - 93,300 £
Price
38,800 - 75,300 £
Consumption L/100km
6 - 11.8 L/100km
Consumption L/100km
2.9 - 9.5 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
74 km
Battery Capacity
-
Battery Capacity
-
co2
157 - 267 g/km
co2
66 - 216 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
1,570 - 1,810 kg
Trunk capacity
525 L
Trunk capacity
385 - 435 L
Length
-
Length
-
Width
1,903 - 1,955 mm
Width
1,834 - 1,849 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
535 - 590 kg
Payload
480 - 500 kg

Engine and Performance
Engine Type
Diesel, Petrol
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel, Petrol
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 - 421 HP
Acceleration 0-100km/h
3.8 - 6.6 s
Acceleration 0-100km/h
4.3 - 11 s
Max Speed
-
Max Speed
-
Torque
470 - 600 Nm
Torque
230 - 500 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4
Power kW
154 - 382 kW
Power kW
85 - 310 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
E, F, B, G
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.