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Kia Stonic vs Mercedes A Class Saloon comparison

Compare performance (115 HP vs 320 HP), boot space and price (20,400 £ vs 32,700 £ ) at a glance. Find out which car is the better choice for you – Kia Stonic or Mercedes A Class Saloon?

Kia Stonic vs Mercedes A Class Saloon: Key differences

Kia Stonic

4.6 (2 Reviews)
rate
  • significantly cheaper
  • noticeably lighter
details

Mercedes A Class Saloon

5 (1 Reviews)
rate
  • considerably more power
  • substantially more efficient
  • clearly quicker 0–100 km/h
  • slightly more trunk space
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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

Stonic

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.

Kia Stonic is significantly cheaper – starting at 20,400 £ , while the Mercedes A Class Saloon costs 32,700 £ . That’s a price difference of around 12,330 £.

Fuel consumption also shows a difference: the Mercedes A Class Saloon uses 0.7 L/100km and is substantially more efficient than the Kia Stonic with 5.6 L/100km. The difference is about 4.9 L/100km.

A Class Saloon

Engine and Performance:

Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.

When it comes to engine power, the Mercedes A Class Saloon offers considerably more power – delivering 320 HP compared to 115 HP. That’s roughly 205 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes A Class Saloon is clearly quicker – completing the sprint in 4.8 s, while the Kia Stonic takes 10.7 s. That’s about 5.9 s quicker.

There’s also a difference in torque: the Mercedes A Class Saloon delivers clearly more torque with 450 Nm compared to 200 Nm. That’s about 250 Nm more.

Stonic

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, Kia Stonic is noticeably lighter – 1,205 kg compared to 1,450 kg. The difference is around 245 kg.

Looking at boot space, the Mercedes A Class Saloon offers slightly more boot space – 395 L compared to 352 L. That’s a difference of about 43 L.

When it comes to payload, the Mercedes A Class Saloon carries very slightly more – 490 kg compared to 445 kg. That’s a difference of about 45 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

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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Kia Stonic

The Kia Stonic is a compact crossover that pairs nimble city manners with a surprisingly spacious and comfortable cabin. It’s a practical, well-equipped choice for buyers who value sensible features, approachable styling and easy everyday usability.

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Kia_Stonic_MY22_16
Kia_Stonic_MY22_15
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Reviews Kia Stonic

4.6 (2 Reviews)
rate
Jan
18 Mar 2026, 07:19:10

Very good car, uses little fuel, nothing's gone wrong in 4 years, no breakdowns.

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
Ennio
4 Feb 2026, 13:19:36

I'm very satisfied — I have a Stonic Black Edition hybrid, and I haven't had any problems after two years.

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

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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18C0775_008
18C0775_012
18C0775_029
18C0480_07

Reviews Mercedes A Class Saloon

5 (1 Reviews)
rate
KHL
3 Aug 2026, 16:55:42

The Mercedes is superior to the BMW 1 Series in (almost) every respect. The 1 Series BMW, however, is designed differently, so everyone can pick out what he/she needs.

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

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Mercedes A Class Saloon

Costs and Consumption
Price
20,400 - 26,800 £
Price
32,700 - 55,900 £
Consumption L/100km
5.6 - 5.7 L/100km
Consumption L/100km
0.7 - 8.1 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
88 km
Battery Capacity
-
Battery Capacity
12.9 kWh
co2
126 - 128 g/km
co2
16 - 184 g/km
Fuel tank capacity
-
Fuel tank capacity
35 - 51 L

Dimensions and Body
Body Type
SUV
Body Type
Sedan
Seats
5
Seats
5
Doors
-
Doors
4
Curb weight
1,205 - 1,270 kg
Curb weight
1,450 - 1,705 kg
Trunk capacity
352 L
Trunk capacity
345 - 395 L
Length
-
Length
4,558 - 4,570 mm
Width
1,760 mm
Width
1,796 mm
Height
-
Height
1,413 - 1,429 mm
Max trunk capacity
-
Max trunk capacity
-
Payload
440 - 445 kg
Payload
475 - 490 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV
Engine Type
Plugin Hybrid, Petrol MHEV, Diesel
Transmission
Manuel, Automatic
Transmission
Automatic
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Transmission Detail
Dual-Clutch Automatic
Drive Type
Front-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
100 - 115 HP
Power HP
116 - 320 HP
Acceleration 0-100km/h
10.7 - 12.1 s
Acceleration 0-100km/h
4.8 - 9.9 s
Max Speed
-
Max Speed
206 - 250 km/h
Torque
172 - 200 Nm
Torque
200 - 450 Nm
Number of Cylinders
3
Number of Cylinders
4
Power kW
74 - 85 kW
Power kW
85 - 235 kW
Engine capacity
998 cm3
Engine capacity
1,332 - 1,991 cm3

General
Model Year
2025
Model Year
2,024 - 2,025
CO2 Efficiency Class
D
CO2 Efficiency Class
B, D, G, E
Brand
Kia
Brand
Mercedes-Benz
Is the Kia Stonic offered with different drivetrains?

The Kia Stonic is offered with Front-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.