VS

Mercedes GLS vs SEAT Ateca comparison

Compare performance (404 HP vs 150 HP), boot space and price (92,700 £ vs 25,100 £ ) at a glance. Find out which car is the better choice for you – Mercedes GLS or SEAT Ateca?

Mercedes GLS vs SEAT Ateca: Key differences

Mercedes GLS

  • substantially more power
  • considerably quicker 0–100 km/h
details

SEAT Ateca

4.5 (6 Reviews)
rate
  • clearly cheaper
  • considerably more efficient
  • clearly lighter
  • noticeably more trunk space
details

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

GLS

Costs and Efficiency:

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

SEAT Ateca is clearly cheaper – starting at 25,100 £ , while the Mercedes GLS costs 92,700 £ . That’s a price difference of around 67,557 £.

Fuel consumption also shows a difference: the SEAT Ateca uses 4.9 L/100km and is considerably more efficient than the Mercedes GLS with 7.9 L/100km. The difference is about 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 GLS offers substantially more power – delivering 404 HP compared to 150 HP. That’s roughly 254 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes GLS is considerably quicker – completing the sprint in 5.6 s, while the SEAT Ateca takes 9 s. That’s about 3.4 s quicker.

There’s also a difference in torque: the Mercedes GLS delivers clearly more torque with 750 Nm compared to 360 Nm. That’s about 390 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 Ateca is clearly lighter – 1,345 kg compared to 2,580 kg. The difference is around 1,235 kg.

Looking at boot space, the SEAT Ateca offers noticeably more boot space – 510 L compared to 355 L. That’s a difference of about 155 L.

When it comes to payload, the Mercedes GLS carries markedly more – 820 kg compared to 525 kg. That’s a difference of about 295 kg.

Who wins the race in the data check?

The SEAT Ateca is decisively ahead 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 £25,100
Ateca

SEAT Ateca

  • Engine Type Petrol, Diesel
  • Transmission Manuel, Automatic
  • Drive Type Front-Wheel Drive
  • Power HP 116 - 150 HP
  • Consumption L/100km 4.9 - 6.4 L/100km
details

Frequently compared as well

SEAT Ateca
Skoda Kamiq
VS
The SEAT Ateca and Skoda Kamiq are two popular compact SUVs that take different approaches: the Ateca leans toward a roomier, more driver-focused experience while the Kamiq prioritizes city-friendly practicality and efficiency. This comparison will focus on space, driving dynamics, equipment and …
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 GLS
SEAT Ateca

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.

details
19C0481_004
19C0481_007
19C0483_036
19C0480_047
18C1072_111

Reviews Mercedes GLS

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

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
SEAT-Ateca-2020_36_HQ
SEAT-Ateca_012
SEAT-Ateca_011
SEAT-Ateca_006
SEAT-Ateca_004

Reviews SEAT Ateca

4.5 (6 Reviews)
rate
editor
1 Jul 2026, 17:23:30

Exactly the right size. Just still suitable for families. The touchscreen is nicely integrated, not just a tablet stuck on — it flows into a console with the Virtual Cockpit and still has real buttons for the most important everyday functions. Perfect mix. My comparisons were the new 2er Active Tourer, the B‑Class and the Kia Sportage. The Ateca won for me overall by a clear margin, but it was a bit overpriced in comparison. And it wasn't my dream car. More a "practical car." Cheap is a thing of the past.

The speedo shows up to 218 km/h, but it really struggles to get beyond about 180. Above 150 km/h it also gets noticeably louder, but still acceptable. For people who like to glide along comfortably it's a very good choice; for those who like to drive fast, rather not. It handles dirt tracks well thanks to its ground clearance, and it also takes corners very well. Already somewhat sporty, agile.

Folding tow hitch, partially autonomous driving, lots of useful driver aids, a good multimedia concept, etc., as well as the very good seating position and controls make it attractive.

My previous 2.0L diesel was noticeably better to drive at higher speeds. But yes, times have changed. Not everything is perfect, but overall it has earned its 5 stars when you factor in the price and compare what you get for your money. 1.5 TSI Xperience DSG +XL + ***

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
Stefan
10 Jun 2026, 12:17:28

The Seat Ateca is a very affordable SUV with excellent handling and plenty of space for the whole family. A companion that can do it all and is equally suited to everyday use as to long trips fully loaded. A very good choice for the active family that needs a car that fits most needs.

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

SEAT Ateca
Suzuki Vitara
VS
The SEAT Ateca and Suzuki Vitara are compact SUVs aimed at buyers who want everyday practicality with a bit of style, but they take different routes to get there. The Ateca favours sharper driving dynamics, a more refined cabin and stronger tech, while the Vitara prioritises value, straightforward …
CUPRA Terramar
SEAT Ateca
VS
The CUPRA Terramar serves up sharp handling, punchy powertrains and a premium, slightly flashy cabin that feels like the hot hatch’s grown-up, wearing an SUV’s clothes. The SEAT Ateca is the sensible alternative — roomier, cheaper to run and refreshingly unpretentious — perfect for buyers who want …
SEAT Arona
SEAT Ateca
VS
SEAT Arona and SEAT Ateca go head-to-head: compare performance, space, features and price in one quick overview to see which model suits your daily driving, budget and lifestyle better. A clear, side-by-side look helps you make the smarter choice. || Unsure whether the SEAT Arona or the SEAT Ateca …
Kia Sportage
SEAT Ateca
VS
When comparing the Kia Sportage and the SEAT Ateca, both models stand out for their blend of style and practicality. The Sportage boasts a more spacious interior and a comprehensive suite of tech features, appealing to families and tech enthusiasts alike. Meanwhile, the Ateca offers agile handling …
Ford Kuga
SEAT Ateca
VS
In the highly competitive compact SUV segment, the Ford Kuga and SEAT Ateca both offer compelling options for consumers. The Kuga stands out with its robust hybrid powertrain options and impressive in-cabin technology, while the Ateca boasts a sportier drive and agility on the road, enhanced by its …
Mazda CX-5
SEAT Ateca
VS
Mazda CX-5 and SEAT Ateca go head-to-head: compare performance, space, features and price in one quick overview to see which model suits your daily driving, budget and lifestyle better. A clear, side-by-side look helps you make the smarter choice. || Unsure whether the Mazda CX-5 or the SEAT Ateca …
CUPRA Ateca
SEAT Ateca
VS
The CUPRA Ateca turns the sensible family SUV into a pocket rocket with sharper suspension, a punchier engine and aggressive styling that makes commuting feel like a weekend trackday. If you prefer lower running costs, more comfort and smarter value, the SEAT Ateca is the clear choice — practical, …
Nissan Juke
SEAT Ateca
VS
Nissan Juke and SEAT Ateca go head-to-head: compare performance, space, features and price in one quick overview to see which model suits your daily driving, budget and lifestyle better. A clear, side-by-side look helps you make the smarter choice. || Unsure whether the Nissan Juke or the SEAT …
Mercedes GLS
SEAT Ateca

Costs and Consumption
Price
92,700 - 104,600 £
Price
25,100 - 36,900 £
Consumption L/100km
7.9 - 9.9 L/100km
Consumption L/100km
4.9 - 6.4 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
206 - 226 g/km
co2
129 - 144 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
7
Seats
5
Doors
-
Doors
-
Curb weight
2,580 - 2,670 kg
Curb weight
1,345 - 1,514 kg
Trunk capacity
355 L
Trunk capacity
510 L
Length
-
Length
-
Width
1,956 mm
Width
1,841 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
810 - 820 kg
Payload
516 - 525 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel 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
336 - 404 HP
Power HP
116 - 150 HP
Acceleration 0-100km/h
5.6 - 6.2 s
Acceleration 0-100km/h
9 - 11 s
Max Speed
-
Max Speed
-
Torque
560 - 750 Nm
Torque
200 - 360 Nm
Number of Cylinders
6
Number of Cylinders
3 - 4
Power kW
247 - 297 kW
Power kW
85 - 110 kW
Engine capacity
2,989 - 2,999 cm3
Engine capacity
999 - 1,968 cm3

General
Model Year
2026
Model Year
2025
CO2 Efficiency Class
G
CO2 Efficiency Class
E, D
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.