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Mercedes A Class vs SEAT Leon comparison

Compare performance (421 HP vs 272 HP), boot space and price (32,600 £ vs 24,500 £ ) at a glance. Find out which car is the better choice for you – Mercedes A Class or SEAT Leon?

Mercedes A Class vs SEAT Leon: Key differences

Mercedes A Class

2.7 (1 Reviews)
rate
  • clearly more power
  • considerably quicker 0–100 km/h
details

SEAT Leon

4.4 (2 Reviews)
rate
  • visibly cheaper
  • considerably more efficient
  • clearly more electric range
  • barely lighter
  • very slightly 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

A Class

Costs and Efficiency:

Price and efficiency are often the first things buyers look at. Here it becomes clear which model has the long-term edge – whether at the pump, the plug, or in purchase price.

SEAT Leon is visibly cheaper – starting at 24,500 £ , while the Mercedes A Class costs 32,600 £ . That’s a price difference of around 8,114 £.

Fuel consumption also shows a difference: the SEAT Leon uses 1.2 L/100km and is considerably more efficient than the Mercedes A Class with 2.3 L/100km. The difference is about 1.1 L/100km.

As for electric range, the SEAT Leon offers clearly more range – reaching up to 133 km, about 48 km more than the Mercedes A Class.

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 Mercedes A Class offers clearly more power – delivering 421 HP compared to 272 HP. That’s roughly 149 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes A Class is considerably quicker – completing the sprint in 3.9 s, while the SEAT Leon takes 7.7 s. That’s about 3.8 s quicker.

There’s also a difference in torque: the Mercedes A Class delivers noticeably more torque with 500 Nm compared to 360 Nm. That’s about 140 Nm more.

A Class

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 Leon is barely lighter – 1,344 kg compared to 1,440 kg. The difference is around 96 kg.

Looking at boot space, the SEAT Leon offers very slightly more boot space – 380 L compared to 350 L. That’s a difference of about 30 L.

When it comes to payload, the SEAT Leon carries marginally more – 521 kg compared to 485 kg. That’s a difference of about 36 kg.

Who wins the race in the data check?

The SEAT Leon is decisively ahead 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

Frequently compared as well

Mercedes A Class
Mercedes B Class
VS
The Mercedes A‑Class is the sporty, tech‑savvy compact that thrills with sharp handling and a slick cockpit, while the Mercedes B‑Class trades a bit of attitude for towering practicality, roomier seats and a more useful boot. Choose the A‑Class if you want driving fun and style; pick the B‑Class if …
Mercedes A Class
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Mercedes A Class
SEAT Leon

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes A Class

The Mercedes A‑Class arrives as a compact charmer that dresses premium materials and a cockpit full of screens in a tidy, city-friendly package, delivering surprising agility and poise. For buyers who want a luxury badge, clever tech and a car that's equally happy in tight streets or on a spirited country run, the A‑Class offers a grown-up feel with a cheeky streak.

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Reviews Mercedes A Class

2.7 (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-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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Mercedes A Class
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Mercedes A Class
SEAT Leon

Costs and Consumption
Price
32,600 - 66,500 £
Price
24,500 - 36,800 £
Consumption L/100km
2.3 - 9 L/100km
Consumption L/100km
1.2 - 5.5 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
85 km
Electric Range
133 km
Battery Capacity
-
Battery Capacity
-
co2
53 - 205 g/km
co2
28 - 126 g/km
Fuel tank capacity
-
Fuel tank capacity
45 L

Dimensions and Body
Body Type
Hatchback
Body Type
Hatchback
Seats
5
Seats
5
Doors
-
Doors
5
Curb weight
1,440 - 1,695 kg
Curb weight
1,344 - 1,657 kg
Trunk capacity
310 - 350 L
Trunk capacity
270 - 380 L
Length
-
Length
4,368 mm
Width
1,796 - 1,850 mm
Width
1,799 mm
Height
-
Height
1,442 - 1,456 mm
Max trunk capacity
-
Max trunk capacity
1,301 L
Payload
450 - 485 kg
Payload
473 - 521 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel, Plugin Hybrid, Petrol
Engine Type
Petrol, Petrol MHEV, Plugin Hybrid, Diesel
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
116 - 421 HP
Power HP
116 - 272 HP
Acceleration 0-100km/h
3.9 - 9.7 s
Acceleration 0-100km/h
7.7 - 10.5 s
Max Speed
-
Max Speed
197 - 217 km/h
Torque
200 - 500 Nm
Torque
220 - 360 Nm
Number of Cylinders
4
Number of Cylinders
4
Power kW
85 - 310 kW
Power kW
85 - 200 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
1,498 - 1,968 cm3

General
Model Year
2025
Model Year
2,024 - 2,026
CO2 Efficiency Class
D, E, B, G
CO2 Efficiency Class
D, B
Brand
Mercedes-Benz
Brand
SEAT
Is the Mercedes A Class offered with different drivetrains?

The Mercedes A Class is offered with Front-Wheel Drive or 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.