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Mercedes B Class vs Kia Seltos comparison

Compare performance (238 HP vs 180 HP), boot space and price (33,100 £ vs 29,300 £ ) at a glance. Find out which car is the better choice for you – Mercedes B Class or Kia Seltos?

Mercedes B Class vs Kia Seltos: Key differences

Mercedes B Class

4.9 (5 Reviews)
rate
  • clearly more power
  • markedly more efficient
  • clearly quicker 0–100 km/h
  • only slightly lighter
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Kia Seltos

  • moderately cheaper
  • 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

B Class

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

Kia Seltos is moderately cheaper – starting at 29,300 £ , while the Mercedes B Class costs 33,100 £ . That’s a price difference of around 3,824 £.

Fuel consumption also shows a difference: the Mercedes B Class uses 5.1 L/100km and is markedly more efficient than the Kia Seltos with 6.9 L/100km. The difference is about 1.8 L/100km.

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 offers clearly more power – delivering 238 HP compared to 180 HP. That’s roughly 58 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes B Class is clearly quicker – completing the sprint in 6.5 s, while the Kia Seltos takes 8.8 s. That’s about 2.3 s quicker.

There’s also a difference in torque: the Mercedes B Class delivers markedly more torque with 400 Nm compared to 265 Nm. That’s about 135 Nm more.

B Class

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, Mercedes B Class is only slightly lighter – 1,405 kg compared to 1,515 kg. The difference is around 110 kg.

Looking at boot space, the Kia Seltos offers slightly more boot space – 536 L compared to 455 L. That’s a difference of about 81 L.

When it comes to payload, the Mercedes B Class carries marginally more – 550 kg compared to 495 kg. That’s a difference of about 55 kg.

Who wins the race in the data check?

The Mercedes B Class holds a decisive overall lead 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 £33,100
B Class

Mercedes B Class

  • Engine Type Petrol MHEV, Diesel
  • Transmission Automatic
  • Drive Type Front-Wheel Drive, All-Wheel Drive
  • Power HP 116 - 238 HP
  • Consumption L/100km 5.1 - 6.9 L/100km
Mercedes B Class
Kia Seltos

Costs and Consumption

View detailed analysis

Engine and Performance

View detailed analysis

Dimensions and Body

View detailed analysis

Mercedes B Class

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.

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Kia Seltos

The Kia Seltos is a stylish and practical compact SUV that balances urban-friendly dimensions with a confident road presence. Inside it feels thoughtfully laid out with comfortable seating and a composed ride that suits daily driving and light adventure.

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Mercedes B Class
Kia Seltos

Costs and Consumption

Price
33,100 - 52,500 £
Price
29,300 - 38,900 £
Consumption L/100km
5.1 - 6.9 L/100km
Consumption L/100km
6.9 - 7.5 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
133 - 156 g/km
co2
156 - 169 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body

Body Type
MPV
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,405 - 1,565 kg
Curb weight
1,515 - 1,620 kg
Trunk capacity
445 - 455 L
Trunk capacity
536 L
Length
-
Length
-
Width
1,796 mm
Width
1,830 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
515 - 550 kg
Payload
485 - 495 kg

Engine and Performance

Engine Type
Petrol MHEV, Diesel
Engine Type
Petrol
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, All-Wheel Drive
Power HP
116 - 238 HP
Power HP
180 HP
Acceleration 0-100km/h
6.5 - 10 s
Acceleration 0-100km/h
8.8 - 9.2 s
Max Speed
-
Max Speed
-
Torque
200 - 400 Nm
Torque
265 Nm
Number of Cylinders
4
Number of Cylinders
4
Power kW
85 - 175 kW
Power kW
132 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
1,598 cm3

General

Model Year
2025
Model Year
2026
CO2 Efficiency Class
D, E, F
CO2 Efficiency Class
F
Brand
Mercedes-Benz
Brand
Kia
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.