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Alfa Romeo Stelvio vs Mazda 3 Sedan comparison

Compare performance (520 HP vs 186 HP), boot space and price (51,900 £ vs 25,400 £ ) at a glance. Find out which car is the better choice for you – Alfa Romeo Stelvio or Mazda 3 Sedan?

Alfa Romeo Stelvio vs Mazda 3 Sedan: Key differences

Alfa Romeo Stelvio

4.5 (2 Reviews)
rate
  • clearly more power
  • substantially quicker 0–100 km/h
  • a bit more trunk space
details

Mazda 3 Sedan

4.7 (1 Reviews)
rate
  • substantially cheaper
  • only slightly more efficient
  • clearly 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

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.

Mazda 3 Sedan is substantially cheaper – starting at 25,400 £ , while the Alfa Romeo Stelvio costs 51,900 £ . That’s a price difference of around 26,494 £.

Fuel consumption also shows a difference: the Mazda 3 Sedan uses 5.5 L/100km and is only slightly more efficient than the Alfa Romeo Stelvio with 6 L/100km. The difference is about 0.5 L/100km.

3 Sedan

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 Alfa Romeo Stelvio offers clearly more power – delivering 520 HP compared to 186 HP. That’s roughly 334 HP more horsepower.

When accelerating from 0 to 100 km/h, the Alfa Romeo Stelvio is substantially quicker – completing the sprint in 3.8 s, while the Mazda 3 Sedan takes 8.1 s. That’s about 4.3 s quicker.

There’s also a difference in torque: the Alfa Romeo Stelvio delivers considerably more torque with 600 Nm compared to 240 Nm. That’s about 360 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, Mazda 3 Sedan is clearly lighter – 1,417 kg compared to 1,820 kg. The difference is around 403 kg.

Looking at boot space, the Alfa Romeo Stelvio offers a bit more boot space – 525 L compared to 450 L. That’s a difference of about 75 L.

When it comes to payload, the Alfa Romeo Stelvio carries a bit more – 590 kg compared to 501 kg. That’s a difference of about 89 kg.

Who wins the race in the data check?

The Alfa Romeo Stelvio 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 £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

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

4.5 (2 Reviews)
rate
Graham
26 May 2026, 13:31:02

Style & finish

Mazda 3 Sedan

The Mazda 3 Sedan dresses like a compact premium car, with sculpted lines and an interior that punches well above its class. It rewards drivers with eager handling and a composed, comfortable ride that turns routine runs into something a bit more enjoyable — proof that style and substance can share the same key.

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Reviews Mazda 3 Sedan

4.7 (1 Reviews)
rate

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Costs and Consumption
Price
51,900 - 93,300 £
Price
25,400 - 34,700 £
Consumption L/100km
6 - 11.8 L/100km
Consumption L/100km
5.5 - 6 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
157 - 267 g/km
co2
123 - 137 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
Sedan
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,820 - 1,925 kg
Curb weight
1,417 - 1,468 kg
Trunk capacity
525 L
Trunk capacity
450 L
Length
-
Length
-
Width
1,903 - 1,955 mm
Width
1,795 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
535 - 590 kg
Payload
482 - 501 kg

Engine and Performance
Engine Type
Diesel, Petrol
Engine Type
Petrol MHEV
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Manual Gearbox, Automatic Gearbox
Drive Type
All-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
210 - 520 HP
Power HP
140 - 186 HP
Acceleration 0-100km/h
3.8 - 6.6 s
Acceleration 0-100km/h
8.1 - 9.8 s
Max Speed
-
Max Speed
-
Torque
470 - 600 Nm
Torque
238 - 240 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4
Power kW
154 - 382 kW
Power kW
103 - 137 kW
Engine capacity
2,143 - 2,891 cm3
Engine capacity
1,998 - 2,488 cm3

General
Model Year
2,025 - 2,026
Model Year
2026
CO2 Efficiency Class
F, G
CO2 Efficiency Class
D, E
Brand
Alfa Romeo
Brand
Mazda
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.