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Mercedes GLB vs SEAT Leon comparison

Compare performance (354 HP vs 272 HP), boot space and price (43,200 £ vs 24,800 £ ) at a glance. Find out which car is the better choice for you – Mercedes GLB or SEAT Leon?

Mercedes GLB vs SEAT Leon: Key differences

Mercedes GLB

3.6 (4 Reviews)
rate
  • noticeably more power
  • considerably more electric range
  • noticeably quicker 0–100 km/h
  • noticeably more trunk space
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SEAT Leon

4.4 (2 Reviews)
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  • clearly cheaper
  • significantly more efficient
  • clearly 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

GLB

Costs and Efficiency:

Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.

SEAT Leon is clearly cheaper – starting at 24,800 £ , while the Mercedes GLB costs 43,200 £ . That’s a price difference of around 18,392 £.

Fuel consumption also shows a difference: the SEAT Leon uses 1.2 L/100km and is significantly more efficient than the Mercedes GLB with 5.7 L/100km. The difference is about 4.5 L/100km.

As for electric range, the Mercedes GLB offers considerably more range – reaching up to 631 km, about 498 km more than the SEAT Leon.

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 GLB offers noticeably more power – delivering 354 HP compared to 272 HP. That’s roughly 82 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes GLB is noticeably quicker – completing the sprint in 5.5 s, while the SEAT Leon takes 7.7 s. That’s about 2.2 s quicker.

There’s also a difference in torque: the Mercedes GLB delivers clearly more torque with 515 Nm compared to 360 Nm. That’s about 155 Nm more.

GLB

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, SEAT Leon is clearly lighter – 1,344 kg compared to 1,840 kg. The difference is around 496 kg.

Looking at boot space, the Mercedes GLB offers noticeably more boot space – 540 L compared to 380 L. That’s a difference of about 160 L.

When it comes to payload, the SEAT Leon carries very slightly more – 521 kg compared to 505 kg. That’s a difference of about 16 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 £24,800
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
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Frequently compared as well

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Mercedes GLB
SEAT Leon

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes GLB

The Mercedes GLB is a compact luxury SUV that blends smart packaging with a polished, composed driving experience. Its flexible interior and premium feel make it a sensible pick for buyers who want Mercedes comfort and practicality in a smaller footprint.

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Reviews Mercedes GLB

3.6 (4 Reviews)
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Hans
19 Feb 2026, 02:39:00

Great car — very satisfied with the GLB 250 4MATIC.

How do you mainly use this car? (optional): Leisure / Weekend driver
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.

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Small-35510-SEATLeonkeepsWhatCarAwardinthefamily

Reviews SEAT Leon

4.4 (2 Reviews)
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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

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Mercedes GLB
SEAT Leon

Costs and Consumption
Price
43,200 - 62,400 £
Price
24,800 - 36,800 £
Consumption L/100km
5.7 - 6.1 L/100km
Consumption L/100km
1.2 - 5.5 L/100km
Consumption kWh/100km
15.4 - 15.9 kWh/100km
Consumption kWh/100km
-
Electric Range
431 - 631 km
Electric Range
133 km
Battery Capacity
-
Battery Capacity
-
co2
0 - 138 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
1,840 - 2,280 kg
Curb weight
1,344 - 1,657 kg
Trunk capacity
540 L
Trunk capacity
270 - 380 L
Length
-
Length
-
Width
1,861 mm
Width
1,799 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
485 - 505 kg
Payload
473 - 521 kg

Engine and Performance
Engine Type
Electric, Full Hybrid
Engine Type
Petrol, Petrol MHEV, Plugin Hybrid, Diesel
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
Reduction Gearbox
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
156 - 354 HP
Power HP
116 - 272 HP
Acceleration 0-100km/h
5.5 - 9.7 s
Acceleration 0-100km/h
7.7 - 10.5 s
Max Speed
-
Max Speed
-
Torque
280 - 515 Nm
Torque
220 - 360 Nm
Number of Cylinders
4
Number of Cylinders
4
Power kW
115 - 260 kW
Power kW
85 - 200 kW
Engine capacity
1,499 cm3
Engine capacity
1,498 - 1,968 cm3

General
Model Year
2026
Model Year
2,024 - 2,026
CO2 Efficiency Class
A, D, E
CO2 Efficiency Class
D, B
Brand
Mercedes-Benz
Brand
SEAT
What drive types are available for the Mercedes GLB?

Available configurations include Rear-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.