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Mercedes GLS vs SEAT Ibiza comparison

Compare performance (634 HP vs 150 HP), boot space and price (191,300 £ vs 16,800 £ ) at a glance. Find out which car is the better choice for you – Mercedes GLS or SEAT Ibiza?

Mercedes GLS vs SEAT Ibiza: Key differences

Mercedes GLS

  • significantly more power
  • considerably quicker 0–100 km/h
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SEAT Ibiza

  • significantly cheaper
  • significantly more efficient
  • significantly lighter
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By Achim Sedelmaier

Here’s where it gets real: The technical differences in detail

GLS

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 Ibiza is significantly cheaper – starting at 16,800 £ , while the Mercedes GLS costs 191,300 £ . That’s a price difference of around 174,418 £.

Fuel consumption also shows a difference: the SEAT Ibiza uses 5 L/100km and is significantly more efficient than the Mercedes GLS with 13.3 L/100km. The difference is about 8.3 L/100km.

Ibiza

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 GLS offers significantly more power – delivering 634 HP compared to 150 HP. That’s roughly 484 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes GLS is considerably quicker – completing the sprint in 4.2 s, while the SEAT Ibiza takes 8.1 s. That’s about 3.9 s quicker.

There’s also a difference in torque: the Mercedes GLS delivers clearly more torque with 850 Nm compared to 250 Nm. That’s about 600 Nm more.

GLS

Space and Everyday Use:

Whether family car or daily driver – which one offers more room, flexibility and comfort?

Seats: Mercedes GLS offers more seats – 7 vs 5.

In terms of curb weight, SEAT Ibiza is significantly lighter – 1,111 kg compared to 2,700 kg. The difference is around 1,589 kg.

Boot capacity is identical – both offer 355 L of storage.

When it comes to payload, the Mercedes GLS carries markedly more – 695 kg compared to 522 kg. That’s a difference of about 173 kg.

Who wins the race in the data check?

The SEAT Ibiza 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 £16,800
Ibiza

SEAT Ibiza

  • Engine Type : Petrol
  • Transmission : Manuel, Automatic
  • Drive Type : Front-Wheel Drive
  • Power HP : 80 - 150 HP
  • Consumption L/100km : 5 - 5.7 L/100km
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Mercedes GLS
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes GLS

The GLS — usually just called the GLS — is Mercedes' flagship SUV, wrapping limousine-like comfort and commanding road presence into a smart, family-ready package. It pampers occupants with a hushed cabin, premium materials and intuitive tech, while still managing to feel confident and a little indulgent on the daily commute.

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Reviews Mercedes GLS

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SEAT Ibiza

The SEAT Ibiza is a cheeky, well-priced hatchback that blends sharp styling with a grown-up driving character, making it a smart choice for city commuters who still want a bit of fun. Inside it's practical and neatly finished, with sensible kit and easygoing manners that make everyday life less fussy — a car that doesn't try too hard but gets the job done with a smile.

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SEAT-Ibiza-FR_12_HQ

Reviews SEAT Ibiza

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Mercedes GLS
SEAT Ibiza

Costs and Consumption
Price
191,300 £
Price
16,800 - 28,800 £
Consumption L/100km
13.3 L/100km
Consumption L/100km
5 - 5.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
302 g/km
co2
114 - 128 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
Hatchback
Seats
7
Seats
5
Doors
-
Doors
-
Curb weight
2,700 kg
Curb weight
1,111 - 1,231 kg
Trunk capacity
355 L
Trunk capacity
355 L
Length
-
Length
-
Width
1,956 mm
Width
1,780 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
695 kg
Payload
489 - 522 kg

Engine and Performance
Engine Type
Petrol MHEV
Engine Type
Petrol
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
All-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
634 HP
Power HP
80 - 150 HP
Acceleration 0-100km/h
4.2 s
Acceleration 0-100km/h
8.1 - 15.3 s
Max Speed
-
Max Speed
-
Torque
850 Nm
Torque
95 - 250 Nm
Number of Cylinders
8
Number of Cylinders
3 - 4
Power kW
466 kW
Power kW
59 - 110 kW
Engine capacity
3,982 cm3
Engine capacity
999 - 1,498 cm3

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
G
CO2 Efficiency Class
D, C
Brand
Mercedes-Benz
Brand
SEAT
Is the Mercedes GLS offered with different drivetrains?

The Mercedes GLS is available as 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.