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Citroen C5 Aircross vs Mercedes GLB comparison

Compare performance (225 HP vs 354 HP), boot space and price (29,100 £ vs 50,600 £ ) at a glance. Find out which car is the better choice for you – Citroen C5 Aircross or Mercedes GLB?

Citroen C5 Aircross vs Mercedes GLB: Key differences

Citroen C5 Aircross

3.8 (3 Reviews)
rate
  • substantially cheaper
  • markedly lighter
  • only slightly more trunk space

Mercedes GLB

3.2 (3 Reviews)
rate
  • noticeably more power
  • marginally more efficient
  • somewhat more electric range
  • clearly quicker 0–100 km/h

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

C5 Aircross

Costs and Efficiency:

Price and efficiency are often the first things buyers look at. Here it becomes clear which model has the long-term edge – whether at the pump, the plug, or in purchase price.

Citroen C5 Aircross is substantially cheaper – starting at 29,100 £ , while the Mercedes GLB costs 50,600 £ . That’s a price difference of around 21,478 £.

In terms of energy consumption, the Mercedes GLB is marginally more efficient: consuming 15.8 kWh/100km compared to 17 kWh/100km for the Citroen C5 Aircross. That’s a difference of about 1.2 kWh/100km.

As for electric range, the Mercedes GLB offers somewhat more range – reaching up to 631 km, about 111 km more than the Citroen C5 Aircross.

GLB

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 noticeably more power – delivering 354 HP compared to 225 HP. That’s roughly 129 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes GLB is clearly quicker – completing the sprint in 5.5 s, while the Citroen C5 Aircross takes 8.3 s. That’s about 2.8 s quicker.

There’s also a difference in torque: the Mercedes GLB delivers considerably more torque with 515 Nm compared to 300 Nm. That’s about 215 Nm more.

C5 Aircross

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, Citroen C5 Aircross is markedly lighter – 1,629 kg compared to 2,200 kg. The difference is around 571 kg.

Looking at boot space, the Citroen C5 Aircross offers only slightly more boot space – 565 L compared to 540 L. That’s a difference of about 25 L.

When it comes to payload, the Mercedes GLB carries marginally more – 500 kg compared to 471 kg. That’s a difference of about 29 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 £50,600
GLB

Mercedes GLB

  • Engine Type : Electric
  • Transmission : Automatic
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 272 - 354 HP
  • Consumption kWh/100km : 15.8 - 15.9 kWh/100km
  • Electric Range : 614 - 631 km
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Citroen C5 Aircross

The Citroën C5 Aircross feels like a sofa on wheels, delivering a calm, floaty ride and clever packaging that makes life with luggage and kids noticeably easier. Quirky French styling and a supremely practical, family-focused cabin mean it quietly wins hearts by prioritising comfort over showroom bravado.

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Reviews Citroen C5 Aircross

3.8 (3 Reviews)
rate
privat
27 Mar 2026, 16:55:05

Cars like the C5 Aircross are probably one reason why Stellantis is almost bankrupt — or already is.
Uncomfortable and completely unsuitable for long-distance driving.
Huge on the outside, small on the inside.
Extremely uncomfortable seats, poor infotainment, very bad driver aids (360° camera, cruise control, lane-keep assist, navigation… are really awful), confusing, poor road manners, loud engine and noisy wind.
I can only hope that I’ll never again be forced to drive this vehicle.

How do you mainly use this car? (optional): Company car / Business
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Alexis vasquez
15 Feb 2026, 21:03:58

I find the Citroën better suited to my daily driving — more comfortable and efficient, with a softer suspension compared with the firmer Toyota Cross.

How do you mainly use this car? (optional): Commuter (short/medium distance)
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

Mercedes GLB

The Mercedes GLB is a practical compact SUV that mixes boxy, family-friendly space with premium German polish, making it an appealing choice for buyers who want usefulness without pretension. It drives with a confident, composed feel and somehow manages to look both rugged and refined — the grown-up SUV that still likes to have fun.

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Reviews Mercedes GLB

3.2 (3 Reviews)
rate
Hans
19 Feb 2026, 02:39:00

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

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Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
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Citroen C5 Aircross
Mercedes GLB

Costs and Consumption
Price
29,100 - 43,000 £
Price
50,600 - 62,400 £
Consumption L/100km
2.5 - 5.4 L/100km
Consumption L/100km
-
Consumption kWh/100km
17 kWh/100km
Consumption kWh/100km
15.8 - 15.9 kWh/100km
Electric Range
81 - 520 km
Electric Range
614 - 631 km
Battery Capacity
-
Battery Capacity
-
co2
0 - 121 g/km
co2
0 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
1,629 - 2,184 kg
Curb weight
2,200 - 2,280 kg
Trunk capacity
565 L
Trunk capacity
540 L
Length
-
Length
-
Width
1,870 mm
Width
1,861 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
446 - 471 kg
Payload
500 kg

Engine and Performance
Engine Type
Petrol MHEV, Electric, Plugin Hybrid
Engine Type
Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic, Reduction Gearbox
Transmission Detail
Reduction Gearbox
Drive Type
Front-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
145 - 225 HP
Power HP
272 - 354 HP
Acceleration 0-100km/h
8.3 - 11.2 s
Acceleration 0-100km/h
5.5 - 7.4 s
Max Speed
-
Max Speed
-
Torque
230 - 300 Nm
Torque
335 - 515 Nm
Number of Cylinders
3 - 4
Number of Cylinders
-
Power kW
107 - 165 kW
Power kW
200 - 260 kW
Engine capacity
1,199 - 1,598 cm3
Engine capacity
-

General
Model Year
2,025 - 2,026
Model Year
2,026
CO2 Efficiency Class
D, A, B
CO2 Efficiency Class
A
Brand
Citroen
Brand
Mercedes-Benz
Is the Citroen C5 Aircross offered with different drivetrains?

The Citroen C5 Aircross is offered with Front-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.