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Mercedes A Class Saloon vs SEAT Ateca comparison

Compare performance (320 HP vs 150 HP), boot space and price (32,700 £ vs 25,100 £ ) at a glance. Find out which car is the better choice for you – Mercedes A Class Saloon or SEAT Ateca?

Mercedes A Class Saloon vs SEAT Ateca: Key differences

Mercedes A Class Saloon

  • considerably more power
  • clearly more efficient
  • substantially quicker 0–100 km/h
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SEAT Ateca

4.9 (3 Reviews)
rate
  • clearly cheaper
  • barely lighter
  • visibly more trunk space
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By Achim Sedelmaier

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

A Class Saloon

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 Ateca is clearly cheaper – starting at 25,100 £ , while the Mercedes A Class Saloon costs 32,700 £ . That’s a price difference of around 7,616 £.

Fuel consumption also shows a difference: the Mercedes A Class Saloon uses 0.7 L/100km and is clearly more efficient than the SEAT Ateca with 4.9 L/100km. The difference is about 4.2 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 A Class Saloon offers considerably more power – delivering 320 HP compared to 150 HP. That’s roughly 170 HP more horsepower.

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

There’s also a difference in torque: the Mercedes A Class Saloon delivers a bit more torque with 450 Nm compared to 360 Nm. That’s about 90 Nm more.

A Class Saloon

Space and Everyday Use:

Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.

Both vehicles offer seating for 5 people.

In terms of curb weight, SEAT Ateca is barely lighter – 1,345 kg compared to 1,450 kg. The difference is around 105 kg.

Looking at boot space, the SEAT Ateca offers visibly more boot space – 510 L compared to 395 L. That’s a difference of about 115 L.

When it comes to payload, the SEAT Ateca carries only slightly more – 525 kg compared to 490 kg. That’s a difference of about 35 kg.

Who wins the race in the data check?

The Mercedes A Class Saloon stands well ahead of its rival 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 £32,700
A Class Saloon

Mercedes A Class Saloon

  • Engine Type : Plugin Hybrid, Petrol MHEV, Diesel
  • Transmission : Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 116 - 320 HP
  • Consumption L/100km : 0.7 - 8.1 L/100km
  • Electric Range : 88 km
details

Frequently compared as well

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Mercedes A Class Saloon
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes A Class Saloon

The Mercedes A‑Class Saloon blends compact practicality with premium flair, wrapping a surprisingly spacious interior in a slick, modern package that feels more grown-up than its hatchback sibling. It’s an ideal choice for city drivers who want Mercedes polish and cutting-edge tech without the ostentation of a larger saloon, and it even manages to make the daily commute feel a little bit special.

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Reviews Mercedes A Class Saloon

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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

4.9 (3 Reviews)
rate

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

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Mercedes A Class Saloon
SEAT Ateca

Costs and Consumption
Price
32,700 - 55,900 £
Price
25,100 - 36,900 £
Consumption L/100km
0.7 - 8.1 L/100km
Consumption L/100km
4.9 - 6.4 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
88 km
Electric Range
-
Battery Capacity
12.9 kWh
Battery Capacity
-
co2
16 - 184 g/km
co2
129 - 144 g/km
Fuel tank capacity
35 - 51 L
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
SUV
Seats
5
Seats
5
Doors
4
Doors
-
Curb weight
1,450 - 1,705 kg
Curb weight
1,345 - 1,514 kg
Trunk capacity
345 - 395 L
Trunk capacity
510 L
Length
4,558 - 4,570 mm
Length
-
Width
1,796 mm
Width
1,841 mm
Height
1,413 - 1,429 mm
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
475 - 490 kg
Payload
516 - 525 kg

Engine and Performance
Engine Type
Plugin Hybrid, Petrol MHEV, Diesel
Engine Type
Petrol, Diesel
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
116 - 320 HP
Power HP
116 - 150 HP
Acceleration 0-100km/h
4.8 - 9.9 s
Acceleration 0-100km/h
9 - 11 s
Max Speed
206 - 250 km/h
Max Speed
-
Torque
200 - 450 Nm
Torque
200 - 360 Nm
Number of Cylinders
4
Number of Cylinders
3 - 4
Power kW
85 - 235 kW
Power kW
85 - 110 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
999 - 1,968 cm3

General
Model Year
2,024 - 2,025
Model Year
2025
CO2 Efficiency Class
B, D, G, E
CO2 Efficiency Class
E, D
Brand
Mercedes-Benz
Brand
SEAT
What drivetrain options does the Mercedes A Class Saloon have?

The Mercedes A Class Saloon is available as Front-Wheel Drive or 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.