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Kia Niro vs Mercedes B Class - Differences and prices compared
Compare performance (180 HP vs 238 HP), boot space and price (29100 £ vs 33100 £ ) at a glance. Find out which car is the better choice for you – Kia Niro or Mercedes B Class?
Niro
Costs and Efficiency:
Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.
Kia Niro has a to a small extent advantage in terms of price – it starts at 29100 £ , while the Mercedes B Class costs 33100 £ . That’s a price difference of around 3995 £.
Fuel consumption also shows a difference: Kia Niro manages with 2.40 L and is therefore hardly perceptible more efficient than the Mercedes B Class with 2.50 L. The difference is about 0.10 L per 100 km.
As for electric range, the Mercedes B Class performs clearly perceptible better – achieving up to 83 km, about 21 km more than the Kia Niro.
B Class
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 B Class has a noticeable edge – offering 238 HP compared to 180 HP. That’s roughly 58 HP more horsepower.
In acceleration from 0 to 100 km/h, the Mercedes B Class is convincingly quicker – completing the sprint in 6.50 s, while the Kia Niro takes 9.90 s. That’s about 3.40 s faster.
In terms of top speed, the Mercedes B Class performs clearly perceptible better – reaching 250 km/h, while the Kia Niro tops out at 185 km/h. The difference is around 65 km/h.
There’s also a difference in torque: Mercedes B Class pulls significantly stronger with 450 Nm compared to 265 Nm. That’s about 185 Nm difference.
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Niro
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 curb weight, Mercedes B Class is hardly perceptible lighter – 1405 kg compared to 1474 kg. The difference is around 69 kg.
In terms of boot space, the Mercedes B Class offers barely noticeable more room – 455 L compared to 451 L. That’s a difference of about 4 L.
In maximum load capacity, the Mercedes B Class performs slight better – up to 1540 L, which is about 95 L more than the Kia Niro.
When it comes to payload, Mercedes B Class to a small extent takes the win – 550 kg compared to 466 kg. That’s a difference of about 84 kg.
Who wins the race in the data check?
The Mercedes B Class 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.
Kia Niro
Mercedes B Class
Costs and Consumption
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Engine and Performance
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Dimensions and Body
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from about £33,100
Mercedes B Class
Kia Niro
5 (1 Reviews)
The Kia Niro blends clever packaging and modern styling into a compact crossover that’s refreshingly sensible for daily life. It’s comfortable, economical and packed with user‑friendly tech, so if you want a fuss‑free family car with a touch of green credibility, the Niro is worth a test drive.
details
Mercedes B Class
5 (4 Reviews)
The Mercedes B-Class is a smart, grown-up compact people carrier that dresses everyday practicality in a near‑premium polish, perfect for buyers who want comfort and a classy badge without the theatrics. It won’t set your pulse racing on a back road, but it will make school runs, commutes and grocery hauls feel pleasantly civilized — a reliable, slightly posh companion for real life.
details
Kia Niro
Mercedes B Class
Costs and Consumption |
|
|---|---|
|
Price
29100 - 38600 £
|
Price
33100 - 52500 £
|
|
Consumption L/100km
2.4 - 4.9 L
|
Consumption L/100km
2.5 - 6.9 L
|
|
Consumption kWh/100km
-
|
Consumption kWh/100km
-
|
|
Electric Range
57 - 62 km
|
Electric Range
83 km
|
|
Battery Capacity
1.3 - 11.1 kWh
|
Battery Capacity
12.90 kWh
|
|
co2
53 - 111 g/km
|
co2
56 - 156 g/km
|
|
Fuel tank capacity
37 - 42 L
|
Fuel tank capacity
35 - 51 L
|
Dimensions and Body |
|
|---|---|
|
Body Type
SUV
|
Body Type
MPV
|
|
Seats
5
|
Seats
5
|
|
Doors
5
|
Doors
5
|
|
Curb weight
1474 - 1594 kg
|
Curb weight
1405 - 1745 kg
|
|
Trunk capacity
348 - 451 L
|
Trunk capacity
405 - 455 L
|
|
Length
4420 mm
|
Length
4419 mm
|
|
Width
1825 mm
|
Width
1796 mm
|
|
Height
1545 mm
|
Height
1562 mm
|
|
Max trunk capacity
1342 - 1445 L
|
Max trunk capacity
1440 - 1540 L
|
|
Payload
466 kg
|
Payload
505 - 550 kg
|
Engine and Performance |
|
|---|---|
|
Engine Type
Full Hybrid, Plugin Hybrid
|
Engine Type
Plugin Hybrid, Petrol MHEV, Diesel
|
|
Transmission
Automatic
|
Transmission
Automatic
|
|
Transmission Detail
Dual-Clutch Automatic
|
Transmission Detail
Dual-Clutch Automatic
|
|
Drive Type
Front-Wheel Drive
|
Drive Type
Front-Wheel Drive, All-Wheel Drive
|
|
Power HP
138 - 180 HP
|
Power HP
116 - 238 HP
|
|
Acceleration 0-100km/h
9.9 - 11.4 s
|
Acceleration 0-100km/h
6.5 - 10 s
|
|
Max Speed
170 - 185 km/h
|
Max Speed
200 - 250 km/h
|
|
Torque
265 Nm
|
Torque
200 - 450 Nm
|
|
Number of Cylinders
4
|
Number of Cylinders
4
|
|
Power kW
102 - 132 kW
|
Power kW
85 - 175 kW
|
|
Engine capacity
1580 cm3
|
Engine capacity
1332 - 1991 cm3
|
General |
|
|---|---|
|
Model Year
2025
|
Model Year
2024 - 2025
|
|
CO2 Efficiency Class
C, B
|
CO2 Efficiency Class
B, D, E, F
|
|
Brand
Kia
|
Brand
Mercedes-Benz
|
Is the Kia Niro offered with different drivetrains?
The Kia Niro is available as Front-Wheel Drive.
The prices shown are estimates based on German list prices, adjusted for local VAT. Local registration taxes (e.g. NoVA, BPM or CO2 malus) are not included. This information is not legally binding.