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Mercedes GLA vs SEAT Leon comparison

Compare performance (421 HP vs 272 HP), boot space and price (38,800 £ vs 24,800 £ ) at a glance. Find out which car is the better choice for you – Mercedes GLA or SEAT Leon?

Mercedes GLA vs SEAT Leon: Key differences

Mercedes GLA

4.5 (4 Reviews)
rate
  • visibly more power
  • significantly quicker 0–100 km/h
  • slightly more trunk space
details

SEAT Leon

4.4 (2 Reviews)
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  • substantially cheaper
  • significantly more efficient
  • considerably more electric range
  • moderately lighter
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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

GLA

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 substantially cheaper – starting at 24,800 £ , while the Mercedes GLA costs 38,800 £ . That’s a price difference of around 14,031 £.

Fuel consumption also shows a difference: the SEAT Leon uses 1.2 L/100km and is significantly more efficient than the Mercedes GLA with 2.9 L/100km. The difference is about 1.7 L/100km.

As for electric range, the SEAT Leon offers considerably more range – reaching up to 133 km, about 59 km more than the Mercedes GLA.

Leon

Engine and Performance:

Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.

When it comes to engine power, the Mercedes GLA offers visibly 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 GLA is significantly quicker – completing the sprint in 4.3 s, while the SEAT Leon takes 7.7 s. That’s about 3.4 s quicker.

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

GLA

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 moderately lighter – 1,344 kg compared to 1,570 kg. The difference is around 226 kg.

Looking at boot space, the Mercedes GLA offers slightly more boot space – 435 L compared to 380 L. That’s a difference of about 55 L.

When it comes to payload, the SEAT Leon carries only slightly more – 521 kg compared to 500 kg. That’s a difference of about 21 kg.

Who wins the race in the data check?

The SEAT Leon stands well ahead of its rival 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 £24,800
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 B Class
Mercedes GLA
VS
The Mercedes B‑Class is the practical, airy people‑carrier that prioritises space and comfort, while the Mercedes GLA takes the same mechanical smarts and adds SUV looks, higher ride height and a touch more road presence. Pick the B‑Class for family‑friendly sense and efficiency, choose the GLA if …
Mercedes A Class
Mercedes GLA
VS
The Mercedes A‑Class is the sharper, more driver-focused hatch that feels nimble and refined on twisty roads, while the Mercedes GLA trades a bit of agility for SUV practicality with a higher ride height, extra luggage space and a commanding view of the road. Pick the A‑Class for sporty handling, …
Mercedes GLA
SEAT Leon

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes GLA

The Mercedes GLA blends Mercedes style with compact crossover practicality, looking sharper than its size suggests while still feeling purposeful around town. Inside it serves up premium materials and tech-forward ergonomics, and the composed ride makes it an appealing pick for buyers who want luxury wrapped in a city-friendly package with a wink of adventurous spirit.

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Reviews Mercedes GLA

4.5 (4 Reviews)
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Lucien
1 May 2026, 07:12:24

GLA 180 petrol. Ideal for city and highway. Very smooth and quiet. The automatic gearbox is a delight. Average consumption 6.2 L/100 km. Special edition 180 Cyber Edition, leather seats....

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Gutter
24 Feb 2026, 21:53:27

Super nimble, very impressive power from this 1,300cc mild‑hybrid engine — in town, on the road and on the motorway for this 2025 GLA 180 Style AMG... premium interior!

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Serge
16 Jan 2026, 16:09:11

You have to compare like with like — the GLA should be compared to the Q3, not the Q2 as in your study!

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

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.

details
Small-33980-LeonSEDynamic-MysteryBlue
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

Frequently compared as well

CUPRA Leon
SEAT Leon
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Think of the CUPRA Leon and the SEAT Leon as twins who took very different career paths: one became a motorsport-ready show-off, the other a clever, practical all-rounder. In this comparison we'll strip away the styling and spec sheets to help you decide whether you want raw edge and excitement or …
SEAT Arona
SEAT Leon
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City-smart crossover or grown-up hatchback — the SEAT Arona vs SEAT Leon is the clash many buyers face when choosing between style and substance. We take both on the road, test fuel use, boot space and driving feel, and pick the one that fits your commute, weekend plans and bank balance.
BMW X2
Mercedes GLA
VS
In the competitive compact SUV segment, the BMW X2 and Mercedes GLA stand out with their stylish designs and engaging performance. While the X2 offers a sportier driving experience with sharp handling and a distinctive coupe-like silhouette, the GLA impresses with its elegant interior and advanced …
Lexus LBX
Mercedes GLA
VS
In the realm of premium compact SUVs, the Lexus LBX and Mercedes GLA both deliver a blend of luxury and performance that caters to discerning buyers. While the LBX emphasizes a smooth and refined ride with its hybrid powertrain, the GLA offers a sportier edge and more dynamic handling. Ultimately, …
Mercedes GLA
VW T-Roc
VS
In the competitive compact SUV segment, the Mercedes GLA stands out with its luxurious interior and advanced technology, appealing to drivers who prioritize comfort and style. In contrast, the VW T-Roc offers a more playful design and offers a practical, user-friendly experience, making it a strong …
Kia Ceed
SEAT Leon
VS
In the highly competitive compact hatchback segment, the Kia Ceed and SEAT León both stand out with their own distinctive qualities. The Kia Ceed impresses with its robust warranty and a more affordable price tag, making it a practical choice for budget-conscious drivers. On the other hand, the …
SEAT Leon
Skoda Octavia Combi
VS
In the realm of family-oriented compact cars, the SEAT León and Skoda Octavia Combi stand out as noteworthy contenders. The SEAT León, with its sporty design and agile handling, appeals to those looking for a fun driving experience, offering a range of potent engines and advanced infotainment …
Mercedes EQA
Mercedes GLA
VS
In the battle of compact luxury, the Mercedes EQA and GLA offer distinct advantages that cater to different driving preferences. While the EQA stands out with its electric powertrain and eco-friendly appeal, the GLA retains the versatility and familiar dynamics of a traditional combustion engine. …
Mercedes GLA
SEAT Leon

Costs and Consumption
Price
38,800 - 75,300 £
Price
24,800 - 36,800 £
Consumption L/100km
2.9 - 9.5 L/100km
Consumption L/100km
1.2 - 5.5 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
74 km
Electric Range
133 km
Battery Capacity
-
Battery Capacity
-
co2
66 - 216 g/km
co2
28 - 126 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
Hatchback
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,570 - 1,810 kg
Curb weight
1,344 - 1,657 kg
Trunk capacity
385 - 435 L
Trunk capacity
270 - 380 L
Length
-
Length
-
Width
1,834 - 1,849 mm
Width
1,799 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
480 - 500 kg
Payload
473 - 521 kg

Engine and Performance
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel, 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
4.3 - 11 s
Acceleration 0-100km/h
7.7 - 10.5 s
Max Speed
-
Max Speed
-
Torque
230 - 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
E, F, B, G
CO2 Efficiency Class
D, B
Brand
Mercedes-Benz
Brand
SEAT
Is the Mercedes GLA offered with different drivetrains?

The Mercedes GLA is available as 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.