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Mazda 3 Sedan vs SEAT Ateca comparison

Compare performance (186 HP vs 150 HP), boot space and price (25,000 £ vs 25,100 £ ) at a glance. Find out which car is the better choice for you – Mazda 3 Sedan or SEAT Ateca?

Mazda 3 Sedan vs SEAT Ateca: Key differences

Mazda 3 Sedan

4.7 (1 Reviews)
rate
  • marginally cheaper
  • somewhat more power
  • slightly quicker 0–100 km/h
details

SEAT Ateca

4.6 (4 Reviews)
rate
  • moderately more efficient
  • marginally lighter
  • moderately more trunk space
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

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.

Mazda 3 Sedan is marginally cheaper – starting at 25,000 £ , while the SEAT Ateca costs 25,100 £ . That’s a price difference of around 128 £.

Fuel consumption also shows a difference: the SEAT Ateca uses 4.9 L/100km and is moderately more efficient than the Mazda 3 Sedan with 5.5 L/100km. The difference is about 0.6 L/100km.

Ateca

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 Mazda 3 Sedan offers somewhat more power – delivering 186 HP compared to 150 HP. That’s roughly 36 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mazda 3 Sedan is slightly quicker – completing the sprint in 8.1 s, while the SEAT Ateca takes 9 s. That’s about 0.9 s quicker.

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

Space and Everyday Use:

Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.

Both vehicles offer seating for 5 people.

In terms of curb weight, SEAT Ateca is marginally lighter – 1,345 kg compared to 1,420 kg. The difference is around 75 kg.

Looking at boot space, the SEAT Ateca offers moderately more boot space – 510 L compared to 450 L. That’s a difference of about 60 L.

When it comes to payload, the SEAT Ateca carries very slightly more – 525 kg compared to 481 kg. That’s a difference of about 44 kg.

Who wins the race in the data check?

The Mazda 3 Sedan holds a slight edge 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 £25,000
3 Sedan

Mazda 3 Sedan

  • Engine Type : Petrol MHEV
  • Transmission : Manuel, Automatic
  • Drive Type : Front-Wheel Drive
  • Power HP : 140 - 186 HP
  • Consumption L/100km : 5.5 - 6.1 L/100km
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.

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Reviews Mazda 3 Sedan

4.7 (1 Reviews)
rate

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

SEAT Ateca

The SEAT Ateca blends sharp, purposeful styling with practical space that turns everyday errands into something a bit more enjoyable. It’s poised and engaging to drive for its segment, offers solid value, and has just enough personality to make you smile on the school run.

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Reviews SEAT Ateca

4.6 (4 Reviews)
rate
Nico
20 May 2026, 12:31:33

+ Great, firm seats, large boot for such a compact car, good fuel economy, lots of interior space, uncomplicated controls, very agile and safe handling, good build quality, very good steering, good braking performance, relatively small turning circle
- Very poor voice control and navigation, cockpit display too small with very small fonts and symbols, steering wheel too thin, seats too flat despite electric adjustment, poor engine soundproofing, tank far too small, complicated maintenance (oil change appalling), undersized rear brake, fuel filler on the wrong side, sound almost without bass (Beats)

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 Ateca

Costs and Consumption
Price
25,000 - 34,200 £
Price
25,100 - 36,900 £
Consumption L/100km
5.5 - 6.1 L/100km
Consumption L/100km
4.9 - 6.4 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
123 - 135 g/km
co2
129 - 144 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,420 - 1,492 kg
Curb weight
1,345 - 1,514 kg
Trunk capacity
450 L
Trunk capacity
510 L
Length
-
Length
-
Width
1,795 mm
Width
1,841 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
467 - 481 kg
Payload
516 - 525 kg

Engine and Performance
Engine Type
Petrol MHEV
Engine Type
Petrol, 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 - 150 HP
Acceleration 0-100km/h
8.1 - 9.8 s
Acceleration 0-100km/h
9 - 11 s
Max Speed
-
Max Speed
-
Torque
238 - 240 Nm
Torque
200 - 360 Nm
Number of Cylinders
4
Number of Cylinders
3 - 4
Power kW
103 - 137 kW
Power kW
85 - 110 kW
Engine capacity
1,998 - 2,488 cm3
Engine capacity
999 - 1,968 cm3

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
D
CO2 Efficiency Class
E, D
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.