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Mercedes B Class vs Renault Austral comparison

Compare performance (238 HP vs 148 HP), boot space and price (33,100 £ vs 29,900 £ ) at a glance. Find out which car is the better choice for you – Mercedes B Class or Renault Austral?

Mercedes B Class vs Renault Austral: Key differences

Mercedes B Class

4.9 (5 Reviews)
rate
  • markedly more power
  • visibly more efficient
  • considerably quicker 0–100 km/h
  • a bit lighter
details

Renault Austral

4.9 (5 Reviews)
rate
  • a bit cheaper
  • a bit more trunk space
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:

Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.

Renault Austral is a bit cheaper – starting at 29,900 £ , while the Mercedes B Class costs 33,100 £ . That’s a price difference of around 3,215 £.

Fuel consumption also shows a difference: the Mercedes B Class uses 5.1 L/100km and is visibly more efficient than the Renault Austral with 6.4 L/100km. The difference is about 1.3 L/100km.

Austral

Engine and Performance:

Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.

When it comes to engine power, the Mercedes B Class offers markedly more power – delivering 238 HP compared to 148 HP. That’s roughly 90 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes B Class is considerably quicker – completing the sprint in 6.5 s, while the Renault Austral takes 9.9 s. That’s about 3.4 s quicker.

There’s also a difference in torque: the Mercedes B Class delivers visibly more torque with 400 Nm compared to 270 Nm. That’s about 130 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 a bit lighter – 1,405 kg compared to 1,548 kg. The difference is around 143 kg.

Looking at boot space, the Renault Austral offers a bit more boot space – 555 L compared to 455 L. That’s a difference of about 100 L.

When it comes to payload, the Mercedes B Class carries a bit more – 550 kg compared to 455 kg. That’s a difference of about 95 kg.

Who wins the race in the data check?

The Mercedes B Class stands well ahead of its rival 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
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Frequently compared as well

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Mercedes B Class
Renault Austral

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

Renault Austral

The Renault Austral is a stylish, well-built crossover that blends a comfortable ride with a spacious, modern cabin. It combines everyday-friendly refinement and contemporary technology with a focus on safety and practicality, making it a sensible choice for drivers who want an all-round family car.

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Reviews Renault Austral

4.9 (5 Reviews)
rate

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

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Mercedes B Class
Renault Austral

Costs and Consumption
Price
33,100 - 52,500 £
Price
29,900 - 34,100 £
Consumption L/100km
5.1 - 6.9 L/100km
Consumption L/100km
6.4 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
133 - 156 g/km
co2
145 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
1,548 kg
Trunk capacity
445 - 455 L
Trunk capacity
555 L
Length
-
Length
-
Width
1,796 mm
Width
1,825 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
515 - 550 kg
Payload
455 kg

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

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
D, E, F
CO2 Efficiency Class
E
Brand
Mercedes-Benz
Brand
Renault
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.