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BMW i5 vs Mercedes GLB comparison

Compare performance (601 HP vs 354 HP), boot space and price (60200 £ vs 50600 £ ) at a glance. Find out which car is the better choice for you – BMW i5 or Mercedes GLB?

BMW i5 vs Mercedes GLB: Key differences

BMW i5

  • convincingly more power
  • slight more efficient
  • decisively quicker from 0–100 km/h
  • minimal lighter

Mercedes GLB

3.2 (3 Reviews)
rate
  • somewhat cheaper
  • barely noticeable more electric range
  • barely noticeable 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

i5

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 GLB has a somewhat advantage in terms of price – it starts at 50600 £ , while the BMW i5 costs 60200 £ . That’s a price difference of around 9559 £.

In terms of energy consumption, the advantage goes to the BMW i5: with 14.70 kWh per 100 km, it’s slight more efficient than the Mercedes GLB with 15.80 kWh. That’s a difference of about 1.10 kWh.

As for electric range, the Mercedes GLB performs barely noticeable better – achieving up to 631 km, about 4 km more than the BMW i5.

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 BMW i5 has a convincingly edge – offering 601 HP compared to 354 HP. That’s roughly 247 HP more horsepower.

In acceleration from 0 to 100 km/h, the BMW i5 is decisively quicker – completing the sprint in 3.80 s, while the Mercedes GLB takes 5.50 s. That’s about 1.70 s faster.

There’s also a difference in torque: BMW i5 pulls clearly perceptible stronger with 820 Nm compared to 515 Nm. That’s about 305 Nm difference.

i5

Space and Everyday Use:

Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.

Both vehicles offer seating for 5 people.

In curb weight, BMW i5 is minimal lighter – 2195 kg compared to 2200 kg. The difference is around 5 kg.

In terms of boot space, the Mercedes GLB offers barely noticeable more room – 540 L compared to 490 L. That’s a difference of about 50 L.

When it comes to payload, BMW i5 minimal takes the win – 545 kg compared to 500 kg. That’s a difference of about 45 kg.

Who wins the race in the data check?

The BMW i5 is decisively ahead 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.

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BMW i5
Mercedes GLB

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £60,200
i5

BMW i5

  • Engine Type : Electric
  • Transmission : Automatic
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 340 - 601 HP
  • Consumption kWh/100km : 14.7 - 17.1 kWh
  • Electric Range : 540 - 627 km
details

BMW i5

The BMW i5 swaps predictable executive-car manners for a confident electric vibe, marrying refined comfort with surprisingly engaging steering. It’s a practical choice that doesn’t feel dull, offering the kind of clean, premium experience that makes commuting feel like a small indulgence.

details
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Mercedes GLB

3.2 (3 Reviews)
rate

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 BMW i5

Reviews Mercedes GLB

3.2 (3 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
BMW i5
Mercedes GLB

Costs and Consumption
Price
60200 - 85300 £
Price
50600 - 62400 £
Consumption L/100km
-
Consumption L/100km
-
Consumption kWh/100km
14.7 - 17.1 kWh
Consumption kWh/100km
15.8 - 15.9 kWh
Electric Range
540 - 627 km
Electric Range
614 - 631 km
Battery Capacity
81.20 kWh
Battery Capacity
-
co2
0 g/km
co2
0 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
SUV
Seats
5
Seats
5
Doors
4
Doors
-
Curb weight
2195 - 2370 kg
Curb weight
2200 - 2280 kg
Trunk capacity
490 L
Trunk capacity
540 L
Length
5060 mm
Length
-
Width
1900 mm
Width
1861 mm
Height
1505 - 1515 mm
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
525 - 545 kg
Payload
500 kg

Engine and Performance
Engine Type
Electric
Engine Type
Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Reduction Gearbox
Transmission Detail
Reduction Gearbox
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
340 - 601 HP
Power HP
272 - 354 HP
Acceleration 0-100km/h
3.8 - 6 s
Acceleration 0-100km/h
5.5 - 7.4 s
Max Speed
193 - 230 km/h
Max Speed
-
Torque
430 - 820 Nm
Torque
335 - 515 Nm
Number of Cylinders
-
Number of Cylinders
-
Power kW
250 - 442 kW
Power kW
200 - 260 kW
Engine capacity
-
Engine capacity
-

General
Model Year
2023 - 2024
Model Year
2026
CO2 Efficiency Class
A
CO2 Efficiency Class
A
Brand
BMW
Brand
Mercedes-Benz

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What drive types are available for the BMW i5?

The BMW i5 is offered with Rear-Wheel Drive or All-Wheel Drive.

The prices shown are estimates based on German list prices, adjusted for local VAT. Local registration taxes (e.g. NoVA, BPM or CO2 malus) are not included. This information is not legally binding.