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Mercedes A Class Saloon vs Mercedes B Class comparison

Compare performance (320 HP vs 238 HP), boot space and price (32,700 £ vs 33,100 £ ) at a glance. Find out which car is the better choice for you – Mercedes A Class Saloon or Mercedes B Class?

Mercedes A Class Saloon vs Mercedes B Class: Key differences

Mercedes A Class Saloon

  • marginally cheaper
  • visibly more power
  • significantly more efficient
  • only slightly more electric range
  • clearly quicker 0–100 km/h

Mercedes B Class

4.9 (5 Reviews)
rate
  • only slightly lighter
  • slightly more trunk space

All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.

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

A Class Saloon

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.

Mercedes A Class Saloon is marginally cheaper – starting at 32,700 £ , while the Mercedes B Class costs 33,100 £ . That’s a price difference of around 408 £.

Fuel consumption also shows a difference: the Mercedes A Class Saloon uses 0.7 L/100km and is significantly more efficient than the Mercedes B Class with 2.5 L/100km. The difference is about 1.8 L/100km.

As for electric range, the Mercedes A Class Saloon offers only slightly more range – reaching up to 88 km, about 5 km more than the Mercedes B Class.

B Class

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 A Class Saloon offers visibly more power – delivering 320 HP compared to 238 HP. That’s roughly 82 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes A Class Saloon is clearly quicker – completing the sprint in 4.8 s, while the Mercedes B Class takes 6.5 s. That’s about 1.7 s quicker.

Looking at top speed, the Mercedes A Class Saloon is somewhat faster – reaching 250 km/h, while the Mercedes B Class tops out at 223 km/h. The difference is around 27 km/h.

Both models offer the same torque – 450 Nm.

A Class Saloon

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 only slightly lighter – 1,405 kg compared to 1,450 kg. The difference is around 45 kg.

Looking at boot space, the Mercedes B Class offers slightly more boot space – 455 L compared to 395 L. That’s a difference of about 60 L.

When it comes to payload, the Mercedes B Class carries a bit more – 550 kg compared to 490 kg. That’s a difference of about 60 kg.

Who wins the race in the data check?

The Mercedes A Class Saloon 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 £32,700
A Class Saloon

Mercedes A Class Saloon

  • Engine Type : Plugin Hybrid, Petrol MHEV, Diesel
  • Transmission : Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 116 - 320 HP
  • Consumption L/100km : 0.7 - 8.1 L/100km
  • Electric Range : 88 km
details

Frequently compared as well

Mercedes B Class
Mercedes GLA
VS
The Mercedes B‑Class is the practical, airy people‑carrier that prioritises space and comfort, while the Mercedes GLA takes the same mechanical smarts and adds SUV looks, higher ride height and a touch more road presence. Pick the B‑Class for family‑friendly sense and efficiency, choose the GLA if …
Mercedes A Class
Mercedes B Class
VS
The Mercedes A‑Class is the sporty, tech‑savvy compact that thrills with sharp handling and a slick cockpit, while the Mercedes B‑Class trades a bit of attitude for towering practicality, roomier seats and a more useful boot. Choose the A‑Class if you want driving fun and style; pick the B‑Class if …
Mercedes A Class Saloon
Mercedes B Class

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes A Class Saloon

The Mercedes A‑Class Saloon blends compact practicality with premium flair, wrapping a surprisingly spacious interior in a slick, modern package that feels more grown-up than its hatchback sibling. It’s an ideal choice for city drivers who want Mercedes polish and cutting-edge tech without the ostentation of a larger saloon, and it even manages to make the daily commute feel a little bit special.

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Reviews Mercedes A Class Saloon

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

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

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Mercedes A Class Saloon
Mercedes B Class

Costs and Consumption
Price
32,700 - 55,900 £
Price
33,100 - 52,500 £
Consumption L/100km
0.7 - 8.1 L/100km
Consumption L/100km
2.5 - 6.9 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
88 km
Electric Range
83 km
Battery Capacity
12.9 kWh
Battery Capacity
12.9 kWh
co2
16 - 184 g/km
co2
56 - 156 g/km
Fuel tank capacity
35 - 51 L
Fuel tank capacity
35 L

Dimensions and Body
Body Type
Sedan
Body Type
MPV
Seats
5
Seats
5
Doors
4
Doors
5
Curb weight
1,450 - 1,705 kg
Curb weight
1,405 - 1,745 kg
Trunk capacity
345 - 395 L
Trunk capacity
405 - 455 L
Length
4,558 - 4,570 mm
Length
4,419 mm
Width
1,796 mm
Width
1,796 mm
Height
1,413 - 1,429 mm
Height
1,562 mm
Max trunk capacity
-
Max trunk capacity
1,440 L
Payload
475 - 490 kg
Payload
505 - 550 kg

Engine and Performance
Engine Type
Plugin Hybrid, Petrol MHEV, Diesel
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, All-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
116 - 320 HP
Power HP
116 - 238 HP
Acceleration 0-100km/h
4.8 - 9.9 s
Acceleration 0-100km/h
6.5 - 10 s
Max Speed
206 - 250 km/h
Max Speed
223 km/h
Torque
200 - 450 Nm
Torque
200 - 450 Nm
Number of Cylinders
4
Number of Cylinders
4
Power kW
85 - 235 kW
Power kW
85 - 175 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
1,332 - 1,991 cm3

General
Model Year
2,024 - 2,025
Model Year
2,024 - 2,025
CO2 Efficiency Class
B, D, G, E
CO2 Efficiency Class
B, D, E, F
Brand
Mercedes-Benz
Brand
Mercedes-Benz
What drivetrain options does the Mercedes A Class Saloon have?

The Mercedes A Class Saloon is available as 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.