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Mercedes GLB vs Renault Austral comparison

Compare performance (354 HP vs 148 HP), boot space and price (43,200 £ vs 29,900 £ ) at a glance. Find out which car is the better choice for you – Mercedes GLB or Renault Austral?

Mercedes GLB vs Renault Austral: Key differences

Mercedes GLB

3.6 (4 Reviews)
rate
  • clearly more power
  • moderately more efficient
  • considerably quicker 0–100 km/h
details

Renault Austral

4.9 (5 Reviews)
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  • substantially cheaper
  • slightly lighter
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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

GLB

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.

Renault Austral is substantially cheaper – starting at 29,900 £ , while the Mercedes GLB costs 43,200 £ . That’s a price difference of around 13,283 £.

Fuel consumption also shows a difference: the Mercedes GLB uses 5.7 L/100km and is moderately more efficient than the Renault Austral with 6.4 L/100km. The difference is about 0.7 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 GLB offers clearly more power – delivering 354 HP compared to 148 HP. That’s roughly 206 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes GLB is considerably quicker – completing the sprint in 5.5 s, while the Renault Austral takes 9.9 s. That’s about 4.4 s quicker.

There’s also a difference in torque: the Mercedes GLB delivers substantially more torque with 515 Nm compared to 270 Nm. That’s about 245 Nm more.

GLB

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, Renault Austral is slightly lighter – 1,548 kg compared to 1,840 kg. The difference is around 292 kg.

When it comes to payload, the Mercedes GLB carries very slightly more – 505 kg compared to 455 kg. That’s a difference of about 50 kg.

Who wins the race in the data check?

The Mercedes GLB 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 £43,200
GLB

Mercedes GLB

  • Engine Type : Electric, Full Hybrid
  • Transmission : Automatic
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 156 - 354 HP
  • Consumption L/100km : 5.7 - 6.1 L/100km
  • Consumption kWh/100km : 15.4 - 15.9 kWh/100km
  • Electric Range : 431 - 631 km
details

Frequently compared as well

Renault Austral
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Mercedes GLB
Renault Austral

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes GLB

The Mercedes GLB is a compact luxury SUV that blends smart packaging with a polished, composed driving experience. Its flexible interior and premium feel make it a sensible pick for buyers who want Mercedes comfort and practicality in a smaller footprint.

details
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Reviews Mercedes GLB

3.6 (4 Reviews)
rate
Hans
19 Feb 2026, 02:39:00

Great car — very satisfied with the GLB 250 4MATIC.

How do you mainly use this car? (optional): Leisure / Weekend driver
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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r220293p
r220394p
r221062p
r221121p
r221115p

Reviews Renault Austral

4.9 (5 Reviews)
rate

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

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Mercedes GLB
Renault Austral

Costs and Consumption
Price
43,200 - 62,400 £
Price
29,900 - 34,100 £
Consumption L/100km
5.7 - 6.1 L/100km
Consumption L/100km
6.4 L/100km
Consumption kWh/100km
15.4 - 15.9 kWh/100km
Consumption kWh/100km
-
Electric Range
431 - 631 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
0 - 138 g/km
co2
145 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,840 - 2,280 kg
Curb weight
1,548 kg
Trunk capacity
540 L
Trunk capacity
-
Length
-
Length
-
Width
1,861 mm
Width
1,825 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
485 - 505 kg
Payload
455 kg

Engine and Performance
Engine Type
Electric, Full Hybrid
Engine Type
Petrol MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Reduction Gearbox
Transmission Detail
CVT
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
156 - 354 HP
Power HP
148 HP
Acceleration 0-100km/h
5.5 - 9.7 s
Acceleration 0-100km/h
9.9 s
Max Speed
-
Max Speed
-
Torque
280 - 515 Nm
Torque
270 Nm
Number of Cylinders
4
Number of Cylinders
4
Power kW
115 - 260 kW
Power kW
109 kW
Engine capacity
1,499 cm3
Engine capacity
1,332 cm3

General
Model Year
2026
Model Year
2025
CO2 Efficiency Class
A, D, E
CO2 Efficiency Class
E
Brand
Mercedes-Benz
Brand
Renault
What drive types are available for the Mercedes GLB?

Available configurations include Rear-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.