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Mercedes GLC vs SEAT Ateca comparison

Compare performance (472 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 (12 Reviews)
rate
  • clearly more power
  • substantially more efficient
  • significantly quicker 0–100 km/h
  • somewhat more trunk space
details

SEAT Ateca

4.6 (4 Reviews)
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  • significantly 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

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 472 HP compared to 150 HP. That’s roughly 322 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes GLC is significantly quicker – completing the sprint in 4.2 s, while the SEAT Ateca takes 9 s. That’s about 4.8 s quicker.

There’s also a difference in torque: the Mercedes GLC delivers clearly more torque with 750 Nm compared to 360 Nm. That’s about 390 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 1,985 kg. The difference is around 640 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 marginally more – 575 kg compared to 525 kg. That’s a difference of about 50 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 : Diesel MHEV, Plugin Hybrid, Petrol MHEV
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive
  • Power HP : 186 - 472 HP
  • Consumption L/100km : 1.6 - 9.4 L/100km
  • Electric Range : 122 - 128 km
details

Frequently compared as well

SEAT Ateca
VW T-Roc
VS
The SEAT Ateca and the VW T‑Roc are two closely related compact crossover SUVs from the Volkswagen Group, each offering a blend of practicality, comfort and engaging driving manners. This comparison will highlight where the Ateca’s straightforward value and roomy practicality differ from the …
Mercedes GLC
Volvo EX60
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The Mercedes GLC and the Volvo EX60 take different approaches to the premium compact SUV segment: the GLC leans on refined ride, traditional luxury and a choice of petrol, mild-hybrid or plug-in options, while the EX60 emphasizes all-electric power, minimalist Scandinavian design and advanced …
Mercedes GLC
SEAT Ateca

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes GLC

The Mercedes GLC blends quiet refinement with premium materials to create a comfortable, modern cabin that feels more upscale than its size might suggest. It delivers composed handling and confident on-road manners while offering practical versatility and a strong suite of driver assistance and infotainment features.

details
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Reviews Mercedes GLC

4.4 (12 Reviews)
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Zede
10 May 2026, 20:12:35

Too expensive! To justify it with technology that's equal or inferior.

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

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Reviews SEAT Ateca

4.6 (4 Reviews)
rate
Nico
20 May 2026, 12:31:33

+ Great, firm seats, large boot for such a compact car, good fuel economy, lots of interior space, uncomplicated controls, very agile and safe handling, good build quality, very good steering, good braking performance, relatively small turning circle
- Very poor voice control and navigation, cockpit display too small with very small fonts and symbols, steering wheel too thin, seats too flat despite electric adjustment, poor engine soundproofing, tank far too small, complicated maintenance (oil change appalling), undersized rear brake, fuel filler on the wrong side, sound almost without bass (Beats)

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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As compact SUVs that balance practicality and value, the Hyundai Tucson and SEAT Ateca are popular choices for buyers seeking everyday comfort with sensible running costs. This comparison cuts through the specs to show which model — the Tucson or the Ateca — suits your needs better, whether you …
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The Mercedes GLC and Volvo XC60 are two of the top contenders in the compact luxury SUV class, each bringing a distinct take on comfort, technology and driving dynamics. If you prioritize sporty refinement and a plush, tech-forward cabin the GLC is a strong choice; if you value Scandinavian design, …
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Land Rover Range Rover Evoque
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The Mercedes GLC and the Range Rover Evoque are two leading compact luxury SUVs that balance premium comfort with everyday practicality. This comparison will help you decide whether the GLC’s composed handling and refined interior or the Evoque’s striking design and off-road capability better suits …
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Mercedes GLC
SEAT Ateca

Costs and Consumption
Price
50,300 - 82,100 £
Price
25,100 - 36,900 £
Consumption L/100km
1.6 - 9.4 L/100km
Consumption L/100km
4.9 - 6.4 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
122 - 128 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
41 - 214 g/km
co2
129 - 144 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,985 - 2,400 kg
Curb weight
1,345 - 1,514 kg
Trunk capacity
390 - 620 L
Trunk capacity
510 L
Length
-
Length
-
Width
1,890 - 1,920 mm
Width
1,841 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
475 - 575 kg
Payload
516 - 525 kg

Engine and Performance
Engine Type
Diesel MHEV, Plugin Hybrid, Petrol MHEV
Engine Type
Petrol, Diesel
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
186 - 472 HP
Power HP
116 - 150 HP
Acceleration 0-100km/h
4.2 - 9 s
Acceleration 0-100km/h
9 - 11 s
Max Speed
-
Max Speed
-
Torque
380 - 750 Nm
Torque
200 - 360 Nm
Number of Cylinders
4 - 6
Number of Cylinders
3 - 4
Power kW
137 - 347 kW
Power kW
85 - 110 kW
Engine capacity
1,993 - 2,999 cm3
Engine capacity
999 - 1,968 cm3

General
Model Year
2,025 - 2,026
Model Year
2025
CO2 Efficiency Class
D, B, E, F, G
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.