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Kia Stonic vs Mercedes GLA comparison

Compare performance (115 HP vs 421 HP), boot space and price (20,400 £ vs 38,800 £ ) at a glance. Find out which car is the better choice for you – Kia Stonic or Mercedes GLA?

Kia Stonic vs Mercedes GLA: Key differences

Kia Stonic

4.6 (2 Reviews)
rate
  • clearly cheaper
  • clearly lighter
details

Mercedes GLA

4.5 (4 Reviews)
rate
  • significantly more power
  • substantially more efficient
  • clearly quicker 0–100 km/h
  • a bit 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

Stonic

Costs and Efficiency:

Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.

Kia Stonic is clearly cheaper – starting at 20,400 £ , while the Mercedes GLA costs 38,800 £ . That’s a price difference of around 18,445 £.

Fuel consumption also shows a difference: the Mercedes GLA uses 2.9 L/100km and is substantially more efficient than the Kia Stonic with 5.6 L/100km. The difference is about 2.7 L/100km.

GLA

Engine and Performance:

Power, torque and acceleration say a lot about how a car feels on the road. This is where you see which model delivers more driving dynamics.

When it comes to engine power, the Mercedes GLA offers significantly more power – delivering 421 HP compared to 115 HP. That’s roughly 306 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes GLA is clearly quicker – completing the sprint in 4.3 s, while the Kia Stonic takes 10.7 s. That’s about 6.4 s quicker.

There’s also a difference in torque: the Mercedes GLA delivers substantially more torque with 500 Nm compared to 200 Nm. That’s about 300 Nm more.

Stonic

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, Kia Stonic is clearly lighter – 1,205 kg compared to 1,570 kg. The difference is around 365 kg.

Looking at boot space, the Mercedes GLA offers a bit more boot space – 435 L compared to 352 L. That’s a difference of about 83 L.

When it comes to payload, the Mercedes GLA carries a bit more – 500 kg compared to 445 kg. That’s a difference of about 55 kg.

Who wins the race in the data check?

The Mercedes GLA 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 £38,800
GLA

Mercedes GLA

  • Engine Type : Petrol MHEV, Plugin Hybrid, Diesel, Petrol
  • Transmission : Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 116 - 421 HP
  • Consumption L/100km : 2.9 - 9.5 L/100km
  • Electric Range : 74 km
details

Frequently compared as well

Mercedes B Class
Mercedes GLA
VS
The Mercedes B‑Class is the practical, airy people‑carrier that prioritises space and comfort, while the Mercedes GLA takes the same mechanical smarts and adds SUV looks, higher ride height and a touch more road presence. Pick the B‑Class for family‑friendly sense and efficiency, choose the GLA if …
Kia Stonic
Kia XCeed
VS
In the city crossover showdown, the Kia Stonic is the cheeky, budget-friendly pocket SUV while the Kia XCeed steps up as the sleeker, more grown-up option with sharper handling and extra space. Pick the Stonic for low running costs and easy parking; go for the XCeed if you want a more planted …
Kia Stonic
Mercedes GLA

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 sprightly compact crossover that mixes city-friendly agility with a cheeky, modern design — perfect for buyers who want style without sacrificing sense. Inside it serves up clever practicality and a bright, well-equipped cabin, making everyday driving feel a bit more fun than it has any right to be.

details
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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 GLA

The Mercedes GLA blends Mercedes style with compact crossover practicality, looking sharper than its size suggests while still feeling purposeful around town. Inside it serves up premium materials and tech-forward ergonomics, and the composed ride makes it an appealing pick for buyers who want luxury wrapped in a city-friendly package with a wink of adventurous spirit.

details
20C0047_067
20C0047_071
20C0047_104
20C0047_115

Reviews Mercedes GLA

4.5 (4 Reviews)
rate
Lucien
1 May 2026, 07:12:24

GLA 180 petrol. Ideal for city and highway. Very smooth and quiet. The automatic gearbox is a delight. Average consumption 6.2 L/100 km. Special edition 180 Cyber Edition, leather seats....

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
Gutter
24 Feb 2026, 21:53:27

Super nimble, very impressive power from this 1,300cc mild‑hybrid engine — in town, on the road and on the motorway for this 2025 GLA 180 Style AMG... premium interior!

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
Serge
16 Jan 2026, 16:09:11

You have to compare like with like — the GLA should be compared to the Q3, not the Q2 as in your study!

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

Frequently compared as well

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Mercedes A Class
Mercedes GLA
VS
The Mercedes A‑Class is the sharper, more driver-focused hatch that feels nimble and refined on twisty roads, while the Mercedes GLA trades a bit of agility for SUV practicality with a higher ride height, extra luggage space and a commanding view of the road. Pick the A‑Class for sporty handling, …
Dacia Sandero
Kia Stonic
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The Dacia Sandero and Kia Stonic target buyers who want compact practicality, but they take very different approaches — Sandero focuses on low cost and straightforward utility while the Stonic offers more style, features and refinement. This quick comparison highlights where each model shines so …
Kia Sportage
Kia Stonic
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Kia Sportage and Kia Stonic go head-to-head in a battle of size and sense — one’s a roomy family SUV that eats motorways for breakfast, the other a scrappy city companion that squeezes into parking gaps like it’s a sport. If you need space, comfort and a bit of presence, pick the Sportage; if you …
Kia Picanto
Kia Stonic
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The Kia Picanto and Kia Stonic are closely related but aimed at different needs: the Picanto is a pint-sized city hatch built for nimble urban driving and low running costs, while the Stonic is a small crossover that adds higher seating, extra boot space and a more rugged presence. This comparison …
Kia Stonic
SEAT Arona
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The Kia Stonic and SEAT Arona are two of the most sensible choices in the subcompact crossover segment, blending city-friendly dimensions with SUV styling and practical interiors. This comparison looks at driving feel, efficiency, space, equipment and running costs to help you choose the better fit …
Kia Niro
Kia Stonic
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The Kia Niro and Kia Stonic step into the compact crossover ring with very different tricks up their sleeves — the Niro is the sensible, efficiency-first all-rounder, while the Stonic is the cheeky, city-savvy funster with a pocket-sized personality. Which one suits your life — long motorway miles …
Dacia Duster
Kia Stonic
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The Dacia Duster and Kia Stonic are compact SUVs aimed at buyers wanting a practical small crossover, but they take different routes to that goal. The Duster prioritizes interior space, simple ruggedness and low ownership costs, while the Stonic leans toward sharper styling, a more polished …
Kia Stonic
Mercedes GLA

Costs and Consumption
Price
20,400 - 26,800 £
Price
38,800 - 75,300 £
Consumption L/100km
5.6 - 5.7 L/100km
Consumption L/100km
2.9 - 9.5 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
74 km
Battery Capacity
-
Battery Capacity
-
co2
126 - 128 g/km
co2
66 - 216 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
1,205 - 1,270 kg
Curb weight
1,570 - 1,810 kg
Trunk capacity
352 L
Trunk capacity
385 - 435 L
Length
-
Length
-
Width
1,760 mm
Width
1,834 - 1,849 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
440 - 445 kg
Payload
480 - 500 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel, Petrol
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 - 421 HP
Acceleration 0-100km/h
10.7 - 12.1 s
Acceleration 0-100km/h
4.3 - 11 s
Max Speed
-
Max Speed
-
Torque
172 - 200 Nm
Torque
230 - 500 Nm
Number of Cylinders
3
Number of Cylinders
4
Power kW
74 - 85 kW
Power kW
85 - 310 kW
Engine capacity
998 cm3
Engine capacity
1,332 - 1,991 cm3

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