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Mercedes GLB vs Renault Symbioz comparison

Compare performance (354 HP vs 158 HP), boot space and price (43,200 £ vs 24,700 £ ) at a glance. Find out which car is the better choice for you – Mercedes GLB or Renault Symbioz?

Mercedes GLB vs Renault Symbioz: Key differences

Mercedes GLB

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

Renault Symbioz

4.8 (5 Reviews)
rate
  • substantially cheaper
  • clearly more efficient
  • visibly lighter
  • only slightly 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

GLB

Costs and Efficiency:

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

Renault Symbioz is substantially cheaper – starting at 24,700 £ , while the Mercedes GLB costs 43,200 £ . That’s a price difference of around 18,512 £.

Fuel consumption also shows a difference: the Renault Symbioz uses 4.5 L/100km and is clearly more efficient than the Mercedes GLB with 5.7 L/100km. The difference is about 1.2 L/100km.

Symbioz

Engine and Performance:

Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.

When it comes to engine power, the Mercedes GLB offers significantly more power – delivering 354 HP compared to 158 HP. That’s roughly 196 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 Symbioz takes 9.1 s. That’s about 3.6 s quicker.

There’s also a difference in torque: the Mercedes GLB delivers considerably more torque with 515 Nm compared to 265 Nm. That’s about 250 Nm more.

GLB

Space and Everyday Use:

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

Both vehicles offer seating for 5 people.

In terms of curb weight, Renault Symbioz is visibly lighter – 1,359 kg compared to 1,840 kg. The difference is around 481 kg.

Looking at boot space, the Renault Symbioz offers only slightly more boot space – 576 L compared to 540 L. That’s a difference of about 36 L.

When it comes to payload, the Mercedes GLB carries marginally more – 505 kg compared to 459 kg. That’s a difference of about 46 kg.

Who wins the race in the data check?

The Mercedes GLB is clearly superior 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

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Mercedes GLB
Renault Symbioz

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)
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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 Symbioz

The Renault Symbioz is a forward-looking concept car that imagines a seamless link between vehicle and home, pairing a lounge-like cabin with striking, futuristic styling. More idea than production plan, it showcases Renault's vision for connected, autonomous and sustainable mobility while provoking debate about how we will live and travel.

details
R-DAM_1579937
R-DAM_1580039
R-DAM_1579964

Reviews Renault Symbioz

4.8 (5 Reviews)
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PF
19 Feb 2026, 11:56:45

A delightful hybrid (family car). Roomy, quick (combined nearly 150 hp) and safe.

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
Michael
5 Dec 2025, 23:17:28

I've been driving the Symbioz Full Hybrid with the iconic trim for 3,500 km. I test-drove both cars. I think the win goes to the Symbioz. Good quality at a family-friendly price. Unfortunately the Opel is simply too expensive. Strangely, what never really gets mentioned is that the Symbioz's suspension is absolutely superb.

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Mercedes GLB
Renault Symbioz

Costs and Consumption
Price
43,200 - 62,400 £
Price
24,700 - 31,100 £
Consumption L/100km
5.7 - 6.1 L/100km
Consumption L/100km
4.5 - 6 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
102 - 136 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
1,359 - 1,465 kg
Trunk capacity
540 L
Trunk capacity
492 - 576 L
Length
-
Length
-
Width
1,861 mm
Width
1,797 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
485 - 505 kg
Payload
455 - 459 kg

Engine and Performance
Engine Type
Electric, Full Hybrid
Engine Type
Full Hybrid, Petrol MHEV
Transmission
Automatic
Transmission
Automatic, Manuel
Transmission Detail
Reduction Gearbox
Transmission Detail
Automatic Gearbox, Manual Gearbox, Dual-Clutch Automatic
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
156 - 354 HP
Power HP
140 - 158 HP
Acceleration 0-100km/h
5.5 - 9.7 s
Acceleration 0-100km/h
9.1 - 11 s
Max Speed
-
Max Speed
-
Torque
280 - 515 Nm
Torque
250 - 265 Nm
Number of Cylinders
4
Number of Cylinders
4
Power kW
115 - 260 kW
Power kW
103 - 116 kW
Engine capacity
1,499 cm3
Engine capacity
1,332 - 1,789 cm3

General
Model Year
2026
Model Year
2025
CO2 Efficiency Class
A, D, E
CO2 Efficiency Class
C, D, 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.