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Mazda 3 Sedan vs Vauxhall Astra comparison

Compare performance (186 HP vs 196 HP), boot space and price (25,000 £ vs 28,300 £ ) at a glance. Find out which car is the better choice for you – Mazda 3 Sedan or Vauxhall Astra?

Mazda 3 Sedan vs Vauxhall Astra: Key differences

Mazda 3 Sedan

4.7 (1 Reviews)
rate
  • slightly cheaper
  • very slightly lighter
  • marginally more trunk space
details

Vauxhall Astra

4.7 (1 Reviews)
rate
  • marginally more power
  • significantly more efficient
  • very slightly quicker 0–100 km/h
details

By Achim Sedelmaier

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

3 Sedan

Costs and Efficiency:

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

Mazda 3 Sedan is slightly cheaper – starting at 25,000 £ , while the Vauxhall Astra costs 28,300 £ . That’s a price difference of around 3,300 £.

Fuel consumption also shows a difference: the Vauxhall Astra uses 2.2 L/100km and is significantly more efficient than the Mazda 3 Sedan with 5.5 L/100km. The difference is about 3.3 L/100km.

Astra

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 Vauxhall Astra offers marginally more power – delivering 196 HP compared to 186 HP. That’s roughly 10 HP more horsepower.

When accelerating from 0 to 100 km/h, the Vauxhall Astra is very slightly quicker – completing the sprint in 7.6 s, while the Mazda 3 Sedan takes 8.1 s. That’s about 0.5 s quicker.

There’s also a difference in torque: the Vauxhall Astra delivers markedly more torque with 360 Nm compared to 240 Nm. That’s about 120 Nm more.

Space and Everyday Use:

Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.

Both vehicles offer seating for 5 people.

In terms of curb weight, Mazda 3 Sedan is very slightly lighter – 1,420 kg compared to 1,438 kg. The difference is around 18 kg.

Looking at boot space, the Mazda 3 Sedan offers marginally more boot space – 450 L compared to 422 L. That’s a difference of about 28 L.

When it comes to payload, the Vauxhall Astra carries barely more – 502 kg compared to 481 kg. That’s a difference of about 21 kg.

Who wins the race in the data check?

The Vauxhall Astra 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 £28,300
Astra

Vauxhall Astra

  • Engine Type : Petrol MHEV, Plugin Hybrid, Diesel, Electric
  • Transmission : Automatic
  • Drive Type : Front-Wheel Drive
  • Power HP : 130 - 196 HP
  • Consumption L/100km : 2.2 - 4.9 L/100km
  • Consumption kWh/100km : 15.3 kWh/100km
  • Electric Range : 83 - 454 km
details

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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

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.

details
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Reviews Mazda 3 Sedan

4.7 (1 Reviews)
rate

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

Vauxhall Astra

The Opel Astra strikes a neat balance between everyday practicality and engaging handling, so the daily grind suddenly feels a bit less dull. Inside it's intelligently packaged with modern kit and comfortable seating, making it a very sensible pick for buyers who want a dependable hatchback that doesn't take itself too seriously.

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Reviews Vauxhall Astra

4.7 (1 Reviews)
rate

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

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Mazda 3 Sedan
Vauxhall Astra

Costs and Consumption
Price
25,000 - 34,200 £
Price
28,300 - 37,900 £
Consumption L/100km
5.5 - 6.1 L/100km
Consumption L/100km
2.2 - 4.9 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
15.3 kWh/100km
Electric Range
-
Electric Range
83 - 454 km
Battery Capacity
-
Battery Capacity
-
co2
123 - 135 g/km
co2
0 - 130 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
Hatchback
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,420 - 1,492 kg
Curb weight
1,438 - 1,733 kg
Trunk capacity
450 L
Trunk capacity
310 - 422 L
Length
-
Length
-
Width
1,795 mm
Width
1,859 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
467 - 481 kg
Payload
438 - 502 kg

Engine and Performance
Engine Type
Petrol MHEV
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel, Electric
Transmission
Manuel, Automatic
Transmission
Automatic
Transmission Detail
Manual Gearbox, Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic, Automatic Gearbox, Reduction Gearbox
Drive Type
Front-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
140 - 186 HP
Power HP
130 - 196 HP
Acceleration 0-100km/h
8.1 - 9.8 s
Acceleration 0-100km/h
7.6 - 10.6 s
Max Speed
-
Max Speed
-
Torque
238 - 240 Nm
Torque
230 - 360 Nm
Number of Cylinders
4
Number of Cylinders
3 - 4
Power kW
103 - 137 kW
Power kW
96 - 144 kW
Engine capacity
1,998 - 2,488 cm3
Engine capacity
1,199 - 1,598 cm3

General
Model Year
2025
Model Year
2026
CO2 Efficiency Class
D
CO2 Efficiency Class
C, B, D, A
Brand
Mazda
Brand
Vauxhall
What drivetrain options does the Mazda 3 Sedan have?

The Mazda 3 Sedan is offered with Front-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.