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Mercedes GLC vs SEAT Ateca comparison

Compare performance (680 HP vs 150 HP), boot space and price (50,300 £ vs 25,100 £ ) at a glance. Find out which car is the better choice for you – Mercedes GLC or SEAT Ateca?

Mercedes GLC vs SEAT Ateca: Key differences

Mercedes GLC

4.4 (11 Reviews)
rate
  • clearly more power
  • substantially more efficient
  • significantly quicker 0–100 km/h
  • somewhat more trunk space

SEAT Ateca

4.9 (3 Reviews)
rate
  • significantly cheaper
  • significantly lighter

All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.

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

GLC

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

SEAT Ateca is significantly cheaper – starting at 25,100 £ , while the Mercedes GLC costs 50,300 £ . That’s a price difference of around 25,222 £.

Fuel consumption also shows a difference: the Mercedes GLC uses 1.6 L/100km and is substantially more efficient than the SEAT Ateca with 4.9 L/100km. The difference is about 3.3 L/100km.

Ateca

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 GLC offers clearly more power – delivering 680 HP compared to 150 HP. That’s roughly 530 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes GLC is significantly quicker – completing the sprint in 3.5 s, while the SEAT Ateca takes 9 s. That’s about 5.5 s quicker.

There’s also a difference in torque: the Mercedes GLC delivers clearly more torque with 1,020 Nm compared to 360 Nm. That’s about 660 Nm more.

GLC

Space and Everyday Use:

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

Both vehicles offer seating for 5 people.

In terms of curb weight, SEAT Ateca is significantly lighter – 1,345 kg compared to 1,910 kg. The difference is around 565 kg.

Looking at boot space, the Mercedes GLC offers somewhat more boot space – 620 L compared to 510 L. That’s a difference of about 110 L.

When it comes to payload, the Mercedes GLC carries moderately more – 600 kg compared to 525 kg. That’s a difference of about 75 kg.

Who wins the race in the data check?

The Mercedes GLC 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 £50,300
GLC

Mercedes GLC

  • Engine Type : Petrol MHEV, Plugin Hybrid, Diesel MHEV, Electric
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive
  • Power HP : 186 - 680 HP
  • Consumption L/100km : 1.6 - 9.7 L/100km
  • Consumption kWh/100km : 14.9 - 16.6 kWh/100km
  • Electric Range : 12 - 714 km
details

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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes GLC

The Mercedes GLC blends plush cabin comfort and composed road manners into an SUV that feels more grown-up than it looks. It won’t shout for attention, but will quietly please buyers who want refinement, usable space and a touch of luxury without the drama.

details
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Reviews Mercedes GLC

4.4 (11 Reviews)
rate
Marek
2 Jan 2026, 18:32:30

There’s something about a Mercedes — you have to take it for a spin to feel it and understand why it’s special.

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

SEAT Ateca

The SEAT Ateca blends sharp, purposeful styling with practical space that turns everyday errands into something a bit more enjoyable. It’s poised and engaging to drive for its segment, offers solid value, and has just enough personality to make you smile on the school run.

details
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Reviews SEAT Ateca

4.9 (3 Reviews)
rate

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

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Mercedes GLC
SEAT Ateca

Costs and Consumption
Price
50,300 - 126,600 £
Price
25,100 - 36,900 £
Consumption L/100km
1.6 - 9.7 L/100km
Consumption L/100km
4.9 - 6.4 L/100km
Consumption kWh/100km
14.9 - 16.6 kWh/100km
Consumption kWh/100km
-
Electric Range
12 - 714 km
Electric Range
-
Battery Capacity
94 kWh
Battery Capacity
-
co2
0 - 221 g/km
co2
129 - 144 g/km
Fuel tank capacity
62 - 65 L
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
5
Seats
5
Doors
5
Doors
-
Curb weight
1,910 - 2,535 kg
Curb weight
1,345 - 1,514 kg
Trunk capacity
390 - 620 L
Trunk capacity
510 L
Length
4,716 - 4,845 mm
Length
-
Width
1,890 - 1,913 mm
Width
1,841 mm
Height
1,603 - 1,644 mm
Height
-
Max trunk capacity
1,490 - 1,740 L
Max trunk capacity
-
Payload
475 - 600 kg
Payload
516 - 525 kg

Engine and Performance
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel MHEV, Electric
Engine Type
Petrol, Diesel
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
Automatic Gearbox, Reduction Gearbox
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
All-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
186 - 680 HP
Power HP
116 - 150 HP
Acceleration 0-100km/h
3.5 - 9 s
Acceleration 0-100km/h
9 - 11 s
Max Speed
210 - 275 km/h
Max Speed
-
Torque
320 - 1,020 Nm
Torque
200 - 360 Nm
Number of Cylinders
4 - 6
Number of Cylinders
3 - 4
Power kW
137 - 500 kW
Power kW
85 - 110 kW
Engine capacity
1,991 - 2,989 cm3
Engine capacity
999 - 1,968 cm3

General
Model Year
2,025 - 2,026
Model Year
2,025
CO2 Efficiency Class
F, G, D, B, E, A
CO2 Efficiency Class
E, D
Brand
Mercedes-Benz
Brand
SEAT
Is the Mercedes GLC offered with different drivetrains?

Available configurations include 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.