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@ SEAT S.A. / SEAT Media Center
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Mercedes B Class vs SEAT Arona - Differences and prices compared

Compare performance (238 HP vs 150 HP), boot space and price (33100 £ vs 19300 £) at a glance. Find out which car is the better choice for you – Mercedes B Class or SEAT Arona?

Mercedes B Class

5 (4 Reviews)
rate

SEAT Arona

4.9 (1 Reviews)
rate

Here’s where it gets real: The technical differences in detail

B Class @ Mercedes-Benz Group Media

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.

SEAT Arona has a significantly advantage in terms of price – it starts at 19300 £, while the Mercedes B Class costs 33100 £. That’s a price difference of around 13827 £.

Fuel consumption also shows a difference: Mercedes B Class manages with 2.50 L and is therefore convincingly more efficient than the SEAT Arona with 5.40 L. The difference is about 2.90 L per 100 km.

Arona @ SEAT S.A. / SEAT Media Center

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 B Class has a clearly perceptible edge – offering 238 HP compared to 150 HP. That’s roughly 88 HP more horsepower.

In acceleration from 0 to 100 km/h, the Mercedes B Class is evident quicker – completing the sprint in 6.50 s, while the SEAT Arona takes 8.40 s. That’s about 1.90 s faster.

In terms of top speed, the Mercedes B Class performs somewhat better – reaching 250 km/h, while the SEAT Arona tops out at 210 km/h. The difference is around 40 km/h.

There’s also a difference in torque: Mercedes B Class pulls convincingly stronger with 450 Nm compared to 250 Nm. That’s about 200 Nm difference.

B Class @ Mercedes-Benz Group Media

Space and Everyday Use:

Whether family car or daily driver – which one offers more room, flexibility and comfort?

Seats: offers more seating capacity – vs .

In curb weight, SEAT Arona is to a small extent lighter – 1188 kg compared to 1405 kg. The difference is around 217 kg.

In terms of boot space, the Mercedes B Class offers slightly more room – 455 L compared to 400 L. That’s a difference of about 55 L.

In maximum load capacity, the Mercedes B Class performs a bit better – up to 1540 L, which is about 260 L more than the SEAT Arona.

When it comes to payload, Mercedes B Class hardly perceptible takes the win – 550 kg compared to 522 kg. That’s a difference of about 28 kg.

Who wins the race?

The Mercedes B Class proves to be leaves the rival little chance and therefore becomes our DriveDuel Champion!
Mercedes B Class is the better all-rounder in this comparison.

from about £33,100
B Class @ Mercedes-Benz Group Media

Mercedes B Class

  • Engine Type : Plugin Hybrid, Petrol MHEV, Diesel
  • Transmission : Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 116 - 238 HP
  • Consumption L/100km : 2.5 - 6.9 L
  • Electric Range : 83 km
details
Mercedes B Class
SEAT Arona

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes B Class

5 (4 Reviews)
rate

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
18C0947_011 @ Mercedes-Benz Group Media
18C0947_009 @ Mercedes-Benz Group Media
18C0953_005 @ Mercedes-Benz Group Media
18C0953_035 @ Mercedes-Benz Group Media
18C0947_044 @ Mercedes-Benz Group Media

SEAT Arona

4.9 (1 Reviews)
rate

The SEAT Arona is a cheeky urban crossover that mixes sharp styling with sensible practicality, making it an appealing choice for buyers who want personality without fuss. It’s zippy in traffic, comfortable enough for daily driving, and brings enough character to make routine journeys feel a little more fun.

details
seat-arona-One-car-countless-possibilities_07_HQ @ SEAT S.A. / SEAT Media Center
seat-arona-One-car-countless-possibilities_06_HQ @ SEAT S.A. / SEAT Media Center
seat-arona-One-car-countless-possibilities_04_HQ @ SEAT S.A. / SEAT Media Center
seat-arona-One-car-countless-possibilities_02_HQ @ SEAT S.A. / SEAT Media Center

Reviews Mercedes B Class

5 (4 Reviews)
rate

Reviews SEAT Arona

4.9 (1 Reviews)
rate

Top Car Comparisons

@ Mercedes-Benz Group Media
Mercedes B Class
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Costs and Consumption
Price
33100 - 52500 £
Price
19300 - 29300 £
Consumption L/100km
2.5 - 6.9 L
Consumption L/100km
5.4 - 5.6 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
83 km
Electric Range
-
Battery Capacity
12.90 kWh
Battery Capacity
-
co2
56 - 156 g/km
co2
122 - 128 g/km
Fuel tank capacity
35 - 51 L
Fuel tank capacity
40 L

Dimensions and Body
Body Type
MPV
Body Type
SUV
Seats
5
Seats
5
Doors
5
Doors
5
Curb weight
1405 - 1745 kg
Curb weight
1188 - 1268 kg
Trunk capacity
405 - 455 L
Trunk capacity
400 L
Length
4419 mm
Length
4153 mm
Width
1796 mm
Width
1780 mm
Height
1562 mm
Height
1537 mm
Max trunk capacity
1440 - 1540 L
Max trunk capacity
1280 L
Payload
505 - 550 kg
Payload
502 - 522 kg

Engine and Performance
Engine Type
Plugin Hybrid, 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
Power HP
116 - 238 HP
Power HP
95 - 150 HP
Acceleration 0-100km/h
6.5 - 10 s
Acceleration 0-100km/h
8.4 - 11.3 s
Max Speed
200 - 250 km/h
Max Speed
182 - 210 km/h
Torque
200 - 450 Nm
Torque
175 - 250 Nm
Number of Cylinders
4
Number of Cylinders
3 - 4
Power kW
85 - 175 kW
Power kW
70 - 110 kW
Engine capacity
1332 - 1991 cm3
Engine capacity
999 - 1498 cm3

General
Model Year
2024 - 2025
Model Year
2025
CO2 Efficiency Class
B, D, E, F
CO2 Efficiency Class
D
Brand
Mercedes-Benz
Brand
SEAT

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What drivetrain options does the Mercedes B Class have?

The Mercedes B Class is offered with Front-Wheel Drive or All-Wheel Drive.

The prices and data displayed are estimates based on German list prices and may vary by country. This information is not legally binding.