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Mazda 3 Sedan vs SEAT Leon comparison

Compare performance (186 HP vs 272 HP), boot space and price (25,000 £ vs 24,500 £ ) at a glance. Find out which car is the better choice for you – Mazda 3 Sedan or SEAT Leon?

Mazda 3 Sedan vs SEAT Leon: Key differences

Mazda 3 Sedan

4.7 (1 Reviews)
rate
  • somewhat more trunk space

SEAT Leon

4.4 (2 Reviews)
rate
  • barely cheaper
  • noticeably more power
  • substantially more efficient
  • marginally quicker 0–100 km/h
  • very slightly lighter

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

3 Sedan

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.

SEAT Leon is barely cheaper – starting at 24,500 £ , while the Mazda 3 Sedan costs 25,000 £ . That’s a price difference of around 523 £.

Fuel consumption also shows a difference: the SEAT Leon uses 1.2 L/100km and is substantially more efficient than the Mazda 3 Sedan with 5.5 L/100km. The difference is about 4.3 L/100km.

Leon

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 SEAT Leon offers noticeably more power – delivering 272 HP compared to 186 HP. That’s roughly 86 HP more horsepower.

When accelerating from 0 to 100 km/h, the SEAT Leon is marginally quicker – completing the sprint in 7.7 s, while the Mazda 3 Sedan takes 8.1 s. That’s about 0.4 s quicker.

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

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, SEAT Leon is very slightly lighter – 1,344 kg compared to 1,420 kg. The difference is around 76 kg.

Looking at boot space, the Mazda 3 Sedan offers somewhat more boot space – 450 L compared to 380 L. That’s a difference of about 70 L.

When it comes to payload, the SEAT Leon carries marginally more – 521 kg compared to 481 kg. That’s a difference of about 40 kg.

Who wins the race in the data check?

The SEAT Leon 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 £24,500
Leon

SEAT Leon

  • Engine Type : Petrol, Petrol MHEV, Plugin Hybrid, Diesel
  • Transmission : Manuel, Automatic
  • Drive Type : Front-Wheel Drive
  • Power HP : 116 - 272 HP
  • Consumption L/100km : 1.2 - 5.5 L/100km
  • Electric Range : 133 km
details

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Mazda 3 Sedan
SEAT Leon

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.

SEAT Leon

SEAT Leon pairs sharp, modern styling with a cabin that's sensible and slightly sporty, making it an appealing choice for buyers who want flair without fuss. It drives with eager composure and offers a neat balance of comfort and agility, so you get everyday usability with a wink of fun.

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Small-33989-LeonSEDynamic-MysteryBlue
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Small-35510-SEATLeonkeepsWhatCarAwardinthefamily

Reviews SEAT Leon

4.4 (2 Reviews)
rate
FaBio
4 Jan 2026, 21:30:20

Mechanically the car is fairly well built, apart from the rear axle.
The air conditioning is effective and visibility is good, while the FR setup paired with the 18" wheels, in my view, hurts comfort — getting in and out can be awkward. Once on board, though, the seats are very comfortable. The infotainment is comprehensive, with a generously sized screen and full-link smartphone connectivity; the factory sat-nav does what it can, but obviously Maps is superior in every way.
All in all, a fun/sporty car that also winks at family life thanks to a roomy boot and modest fuel consumption.

How do you mainly use this car? (optional): Long-distance driver
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

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Mazda 3 Sedan
SEAT Leon

Costs and Consumption
Price
25,000 - 34,200 £
Price
24,500 - 36,400 £
Consumption L/100km
5.5 - 6.1 L/100km
Consumption L/100km
1.2 - 5.5 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
133 km
Battery Capacity
-
Battery Capacity
19.7 kWh
co2
123 - 135 g/km
co2
27 - 126 g/km
Fuel tank capacity
-
Fuel tank capacity
40 - 45 L

Dimensions and Body
Body Type
Sedan
Body Type
Hatchback
Seats
5
Seats
5
Doors
-
Doors
5
Curb weight
1,420 - 1,492 kg
Curb weight
1,344 - 1,657 kg
Trunk capacity
450 L
Trunk capacity
270 - 380 L
Length
-
Length
4,368 mm
Width
1,795 mm
Width
1,799 mm
Height
-
Height
1,442 - 1,460 mm
Max trunk capacity
-
Max trunk capacity
1,187 - 1,301 L
Payload
467 - 481 kg
Payload
473 - 521 kg

Engine and Performance
Engine Type
Petrol MHEV
Engine Type
Petrol, Petrol MHEV, Plugin Hybrid, Diesel
Transmission
Manuel, Automatic
Transmission
Manuel, Automatic
Transmission Detail
Manual Gearbox, Automatic Gearbox
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
Front-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
140 - 186 HP
Power HP
116 - 272 HP
Acceleration 0-100km/h
8.1 - 9.8 s
Acceleration 0-100km/h
7.7 - 10.5 s
Max Speed
-
Max Speed
197 - 220 km/h
Torque
238 - 240 Nm
Torque
220 - 360 Nm
Number of Cylinders
4
Number of Cylinders
4
Power kW
103 - 137 kW
Power kW
85 - 200 kW
Engine capacity
1,998 - 2,488 cm3
Engine capacity
1,498 - 1,968 cm3

General
Model Year
2,025
Model Year
2,024 - 2,026
CO2 Efficiency Class
D
CO2 Efficiency Class
D, B
Brand
Mazda
Brand
SEAT
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.