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Mercedes B Class vs Nissan Ariya comparison

Compare performance (238 HP vs 435 HP), boot space and price (33,100 £ vs 54,800 £ ) at a glance. Find out which car is the better choice for you – Mercedes B Class or Nissan Ariya?

Mercedes B Class vs Nissan Ariya: Key differences

Mercedes B Class

4.9 (5 Reviews)
rate
  • substantially cheaper
  • considerably lighter
  • only slightly more trunk space
details

Nissan Ariya

5 (1 Reviews)
rate
  • substantially more power
  • clearly quicker 0–100 km/h
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

B Class

Costs and Efficiency:

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

Mercedes B Class is substantially cheaper – starting at 33,100 £ , while the Nissan Ariya costs 54,800 £ . That’s a price difference of around 21,719 £.

Ariya

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 Nissan Ariya offers substantially more power – delivering 435 HP compared to 238 HP. That’s roughly 197 HP more horsepower.

When accelerating from 0 to 100 km/h, the Nissan Ariya is clearly quicker – completing the sprint in 5 s, while the Mercedes B Class takes 6.5 s. That’s about 1.5 s quicker.

There’s also a difference in torque: the Nissan Ariya delivers markedly more torque with 600 Nm compared to 400 Nm. That’s about 200 Nm more.

B Class

Space and Everyday Use:

Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.

Both vehicles offer seating for 5 people.

In terms of curb weight, Mercedes B Class is considerably lighter – 1,405 kg compared to 2,277 kg. The difference is around 872 kg.

Looking at boot space, the Mercedes B Class offers only slightly more boot space – 455 L compared to 415 L. That’s a difference of about 40 L.

When it comes to payload, the Mercedes B Class carries noticeably more – 550 kg compared to 363 kg. That’s a difference of about 187 kg.

Who wins the race in the data check?

The Nissan Ariya 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.

£54,848
Ariya

Nissan Ariya

  • Engine Type Electric
  • Transmission Automatic
  • Drive Type All-Wheel Drive
  • Power HP 435 HP
  • Consumption kWh/100km 24.5 kWh/100km
  • Electric Range 417 km
details

Frequently compared as well

Mercedes B Class
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Mercedes A Class
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Mercedes B Class
Nissan Ariya

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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Reviews Mercedes B Class

4.9 (5 Reviews)
rate
Peter
5 Mar 2026, 05:51:19

My wife and I have been driving a Mercedes W247 200d for seven years now, with 93,000 km on the clock. The car is very comfortable even on long trips and economical. At the last service the pads of the electric parking brake were replaced; otherwise no repairs. We love this car.

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

Nissan Ariya

The Nissan Ariya wraps futuristic, sculpted styling around a calm, high-tech cabin, making the switch to electric feel surprisingly easy and grown-up. It’s a comfortable, sensible EV that favors everyday usability and clever packaging over headline-grabbing theatrics — ideal for buyers who want an elegant, low-fuss electric car without the ego.

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Reviews Nissan Ariya

5 (1 Reviews)
rate

No reviews yet. Share your experience and help others decide.

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Mercedes B Class
Nissan Ariya

Costs and Consumption
Price
33,100 - 52,500 £
Price
54,800 £
Consumption L/100km
5.1 - 6.9 L/100km
Consumption L/100km
-
Consumption kWh/100km
-
Consumption kWh/100km
24.5 kWh/100km
Electric Range
-
Electric Range
417 km
Battery Capacity
-
Battery Capacity
-
co2
133 - 156 g/km
co2
0 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
2,277 kg
Trunk capacity
445 - 455 L
Trunk capacity
415 L
Length
-
Length
-
Width
1,796 mm
Width
1,850 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
515 - 550 kg
Payload
363 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel
Engine Type
Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Reduction Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
116 - 238 HP
Power HP
435 HP
Acceleration 0-100km/h
6.5 - 10 s
Acceleration 0-100km/h
5 s
Max Speed
-
Max Speed
-
Torque
200 - 400 Nm
Torque
600 Nm
Number of Cylinders
4
Number of Cylinders
-
Power kW
85 - 175 kW
Power kW
320 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
-

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
D, E, F
CO2 Efficiency Class
A
Brand
Mercedes-Benz
Brand
Nissan
What drivetrain options does the Mercedes B Class have?

Available configurations include Front-Wheel Drive or All-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.