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Mercedes S-Class vs SEAT Ibiza comparison

Compare performance (635 HP vs 150 HP), boot space and price (104,000 £ vs 16,800 £ ) at a glance. Find out which car is the better choice for you – Mercedes S-Class or SEAT Ibiza?

Mercedes S-Class vs SEAT Ibiza: Key differences

Mercedes S-Class

  • clearly more power
  • clearly more efficient
  • significantly quicker 0–100 km/h
  • visibly more trunk space
details

SEAT Ibiza

4.1 (1 Reviews)
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  • substantially cheaper
  • significantly 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

S-Class

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.

SEAT Ibiza is substantially cheaper – starting at 16,800 £ , while the Mercedes S-Class costs 104,000 £ . That’s a price difference of around 87,177 £.

Fuel consumption also shows a difference: the Mercedes S-Class uses 2.2 L/100km and is clearly more efficient than the SEAT Ibiza with 5 L/100km. The difference is about 2.8 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 S-Class offers clearly more power – delivering 635 HP compared to 150 HP. That’s roughly 485 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes S-Class is significantly quicker – completing the sprint in 4 s, while the SEAT Ibiza takes 8.1 s. That’s about 4.1 s quicker.

There’s also a difference in torque: the Mercedes S-Class delivers significantly more torque with 850 Nm compared to 250 Nm. That’s about 600 Nm more.

S-Class

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 Ibiza is significantly lighter – 1,111 kg compared to 2,165 kg. The difference is around 1,054 kg.

Looking at boot space, the Mercedes S-Class offers visibly more boot space – 530 L compared to 355 L. That’s a difference of about 175 L.

When it comes to payload, the Mercedes S-Class carries clearly more – 660 kg compared to 522 kg. That’s a difference of about 138 kg.

Who wins the race in the data check?

The Mercedes S-Class is far ahead 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 £104,000
S-Class

Mercedes S-Class

  • Engine Type Petrol MHEV, Plugin Hybrid, Diesel MHEV
  • Transmission Automatic
  • Drive Type All-Wheel Drive, Rear-Wheel Drive
  • Power HP 336 - 635 HP
  • Consumption L/100km 2.2 - 11 L/100km
  • Electric Range 98 - 118 km
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Frequently compared as well

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SEAT Ibiza
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Mercedes S-Class
SEAT Ibiza

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes S-Class

The Mercedes S-Class wraps peerless comfort, whisper-quiet luxury and subtle tech wizardry into a chauffeur-ready package that still knows how to engage the driver. It’s the car for buyers who want to arrive relaxed, be taken seriously and occasionally enjoy a grin when the road reminds them this limousine can dance.

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Reviews Mercedes S-Class

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

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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Reviews SEAT Ibiza

4.1 (1 Reviews)
rate
Mateusz
13 Jun 2026, 16:32:31

The pros are the dynamics, the body lines, the style, and the build quality.

Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

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Mercedes S-Class
SEAT Ibiza

Costs and Consumption
Price
104,000 - 201,400 £
Price
16,800 - 28,600 £
Consumption L/100km
2.2 - 11 L/100km
Consumption L/100km
5 - 5.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
98 - 118 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
50 - 252 g/km
co2
114 - 128 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
Hatchback
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
2,165 - 2,650 kg
Curb weight
1,111 - 1,231 kg
Trunk capacity
345 - 530 L
Trunk capacity
355 L
Length
-
Length
-
Width
1,921 mm
Width
1,780 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
420 - 660 kg
Payload
489 - 522 kg

Engine and Performance
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel 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, Rear-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
336 - 635 HP
Power HP
80 - 150 HP
Acceleration 0-100km/h
4 - 5.7 s
Acceleration 0-100km/h
8.1 - 15.3 s
Max Speed
-
Max Speed
-
Torque
560 - 850 Nm
Torque
95 - 250 Nm
Number of Cylinders
6 - 8
Number of Cylinders
3 - 4
Power kW
247 - 467 kW
Power kW
59 - 110 kW
Engine capacity
2,989 - 3,982 cm3
Engine capacity
999 - 1,498 cm3

General
Model Year
2026
Model Year
2025
CO2 Efficiency Class
G, B, F
CO2 Efficiency Class
D, C
Brand
Mercedes-Benz
Brand
SEAT
Is the Mercedes S-Class offered with different drivetrains?

The Mercedes S-Class is offered with All-Wheel Drive or Rear-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.