VS

BMW Z4 vs Kia Stonic comparison

Compare performance (340 HP vs 115 HP), boot space and price (43,500 £ vs 20,400 £ ) at a glance. Find out which car is the better choice for you – BMW Z4 or Kia Stonic?

BMW Z4 vs Kia Stonic: Key differences

BMW Z4

4.4 (1 Reviews)
rate
  • substantially more power
  • substantially quicker 0–100 km/h
details

Kia Stonic

4.6 (2 Reviews)
rate
  • significantly cheaper
  • clearly more efficient
  • visibly lighter
  • clearly 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

Z4

Costs and Efficiency:

When it comes to price and running costs, the biggest differences usually appear. This is often where you see which car fits your budget better in the long run.

Kia Stonic is significantly cheaper – starting at 20,400 £ , while the BMW Z4 costs 43,500 £ . That’s a price difference of around 23,066 £.

Fuel consumption also shows a difference: the Kia Stonic uses 5.6 L/100km and is clearly more efficient than the BMW Z4 with 6.9 L/100km. The difference is about 1.3 L/100km.

Stonic

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 BMW Z4 offers substantially more power – delivering 340 HP compared to 115 HP. That’s roughly 225 HP more horsepower.

When accelerating from 0 to 100 km/h, the BMW Z4 is substantially quicker – completing the sprint in 4.5 s, while the Kia Stonic takes 10.7 s. That’s about 6.2 s quicker.

There’s also a difference in torque: the BMW Z4 delivers significantly more torque with 500 Nm compared to 200 Nm. That’s about 300 Nm more.

Z4

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.

Seats: Kia Stonic offers more seats – 5 vs 2.

In terms of curb weight, Kia Stonic is visibly lighter – 1,205 kg compared to 1,510 kg. The difference is around 305 kg.

Looking at boot space, the Kia Stonic offers clearly more boot space – 352 L compared to 281 L. That’s a difference of about 71 L.

When it comes to payload, the Kia Stonic carries substantially more – 445 kg compared to 235 kg. That’s a difference of about 210 kg.

Who wins the race in the data check?

The BMW Z4 is far ahead 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 £43,500
Z4

BMW Z4

  • Engine Type Petrol
  • Transmission Manuel, Automatic
  • Drive Type Rear-Wheel Drive
  • Power HP 197 - 340 HP
  • Consumption L/100km 6.9 - 8.5 L/100km
details

Frequently compared as well

Kia Picanto
Kia Stonic
VS
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
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 …
BMW Z4
Kia Stonic

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BMW Z4

The BMW Z4 is a taut, road-hugging roadster that pairs elegant, low-slung styling with a roof you can drop on a sunny whim, delivering that pure, wind-in-your-hair driving thrill few cars manage to match. It’s an ideal weekend companion for drivers who prefer engagement over practicality — bring good shoes rather than a lot of luggage, and you’ll get a grin every time you turn the wheel.

details
P90479448_highRes_bmw-z4-m40i-09-2022
P90479454_highRes_bmw-z4-m40i-09-2022
P90479457_highRes_bmw-z4-m40i-09-2022
P90479470_highRes_bmw-z4-m40i-09-2022
P90479471_highRes_bmw-z4-m40i-09-2022

Reviews BMW Z4

4.4 (1 Reviews)
rate
Maingard
26 Apr 2026, 13:19:10

Responsive car, very high-performing, very agile in corners.

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

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.

details
Kia_Stonic_MY22_04
Kia_Stonic_MY22_16
Kia_Stonic_MY22_15
Kia_Stonic_MY22_08
Kia_Stonic_MJ22_05

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

Frequently compared as well

Hyundai i20
Kia Stonic
VS
Choosing between the Hyundai i20 and the Kia Stonic comes down to whether you value the i20’s refined hatchback driving dynamics and efficient packaging or the Stonic’s higher ride height, SUV-like presence and slightly more practical load space. I’ll compare their engines, interior space, …
Hyundai Bayon
Kia Stonic
VS
Small crossover, big decisions: the Hyundai Bayon and Kia Stonic duke it out in the compact SUV ring, each promising city-smarts, style and sensible running costs. One brings bold tech and fresh looks, the other leans on practicality and value — so let’s see which small SUV deserves your keys (and …
Kia Niro
Kia Stonic
VS
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 Sandero
Kia Stonic
VS
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 Ceed
Kia Stonic
VS
In the competitive compact segment, the Kia Ceed and Kia Stonic each offer unique advantages tailored to different lifestyles. The Ceed impresses with its spacious interior and refined ride quality, making it a strong choice for families or those who prioritize comfort on longer journeys. In …
Kia Stonic
Skoda Kamiq
VS
Choosing between the Kia Stonic and the Skoda Kamiq comes down to whether you prioritise city-friendly agility and stylish looks or interior space and everyday practicality. The Stonic offers eye-catching design and a peppy, value-oriented drive, while the Kamiq delivers superior cabin quality, …
Hyundai Kona
Kia Stonic
VS
The Hyundai Kona and Kia Stonic are two popular compact crossovers that blend city-friendly size with SUV styling and efficient engines. This comparison focuses on the practical differences—space, driving feel, equipment and running costs—so you can pick the one that fits your priorities.
Kia Sportage
Kia Stonic
VS
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 …
BMW Z4
Kia Stonic

Costs and Consumption
Price
43,500 - 65,300 £
Price
20,400 - 26,800 £
Consumption L/100km
6.9 - 8.5 L/100km
Consumption L/100km
5.6 - 5.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
157 - 191 g/km
co2
126 - 128 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Roadster
Body Type
SUV
Seats
2
Seats
5
Doors
-
Doors
-
Curb weight
1,510 - 1,640 kg
Curb weight
1,205 - 1,270 kg
Trunk capacity
281 L
Trunk capacity
352 L
Length
-
Length
-
Width
1,864 mm
Width
1,760 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
215 - 235 kg
Payload
440 - 445 kg

Engine and Performance
Engine Type
Petrol
Engine Type
Petrol, Petrol MHEV
Transmission
Manuel, Automatic
Transmission
Manuel, Automatic
Transmission Detail
Manual Gearbox, Automatic Gearbox
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
Rear-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
197 - 340 HP
Power HP
100 - 115 HP
Acceleration 0-100km/h
4.5 - 6.8 s
Acceleration 0-100km/h
10.7 - 12.1 s
Max Speed
-
Max Speed
-
Torque
320 - 500 Nm
Torque
172 - 200 Nm
Number of Cylinders
4 - 6
Number of Cylinders
3
Power kW
145 - 250 kW
Power kW
74 - 85 kW
Engine capacity
1,998 - 2,998 cm3
Engine capacity
998 cm3

General
Model Year
2,025 - 2,026
Model Year
2025
CO2 Efficiency Class
F, G
CO2 Efficiency Class
D
Brand
BMW
Brand
Kia
Is the BMW Z4 offered with different drivetrains?

The BMW Z4 is available as Rear-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.