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BMW i4 vs Mercedes GLB - Differences and prices compared

Compare performance (601 HP vs 320 HP), boot space and price (49400 £ vs 40500 £ ) at a glance. Find out which car is the better choice for you – BMW i4 or Mercedes GLB?

BMW i4

5 (1 Reviews)
rate

Mercedes GLB

5 (1 Reviews)
rate

Here’s where it gets real: The technical differences in detail

i4

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 noticeable advantage in terms of price – it starts at 40500 £ , while the BMW i4 costs 49400 £ . That’s a price difference of around 8862 £.

GLB

Engine and Performance:

Power, torque and acceleration say a lot about how a car feels on the road. This is where you see which model delivers more driving dynamics.

When it comes to engine power, the BMW i4 has a decisively edge – offering 601 HP compared to 320 HP. That’s roughly 281 HP more horsepower.

In acceleration from 0 to 100 km/h, the BMW i4 is convincingly quicker – completing the sprint in 3.70 s, while the Mercedes GLB takes 5.50 s. That’s about 1.80 s faster.

There’s also a difference in torque: BMW i4 pulls significantly stronger with 795 Nm compared to 400 Nm. That’s about 395 Nm difference.

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i4

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 curb weight, Mercedes GLB is distinct lighter – 1640 kg compared to 2070 kg. The difference is around 430 kg.

In terms of boot space, the Mercedes GLB offers slightly more room – 570 L compared to 470 L. That’s a difference of about 100 L.

When it comes to payload, Mercedes GLB barely noticeable takes the win – 500 kg compared to 480 kg. That’s a difference of about 20 kg.

Who wins the race in the data check?

The BMW i4 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.

BMW i4
Mercedes GLB

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £49,400
i4

BMW i4

  • Engine Type : Electric
  • Transmission : Automatic
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 286 - 601 HP
  • Consumption kWh/100km : 14.7 - 16.7 kWh
  • Electric Range : 514 - 613 km
details

BMW i4

5 (1 Reviews)
rate

The BMW i4 arrives with the poise of a classic Gran Coupé, marrying BMW's playful handling with a sleek, modern interior that makes switching to electric feel like an upgrade rather than a compromise. For buyers who want a practical daily driver that still enjoys a spirited back-road run, the i4 quietly delivers smiles and a surprising dose of driver engagement.

details
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Mercedes GLB

5 (1 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 i4

5 (1 Reviews)
rate

Reviews Mercedes GLB

5 (1 Reviews)
rate

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Costs and Consumption
Price
49400 - 62500 £
Price
40500 - 65300 £
Consumption L/100km
-
Consumption L/100km
5.6 - 9 L
Consumption kWh/100km
14.7 - 16.7 kWh
Consumption kWh/100km
-
Electric Range
514 - 613 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
0 g/km
co2
146 - 204 g/km
Fuel tank capacity
-
Fuel tank capacity
52 - 60 L

Dimensions and Body
Body Type
Hatchback
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
5
Curb weight
2070 - 2285 kg
Curb weight
1640 - 1820 kg
Trunk capacity
470 L
Trunk capacity
565 - 570 L
Length
-
Length
4634 - 4650 mm
Width
1852 mm
Width
1834 - 1850 mm
Height
-
Height
1665 - 1692 mm
Max trunk capacity
-
Max trunk capacity
1800 - 1805 L
Payload
445 - 480 kg
Payload
500 kg

Engine and Performance
Engine Type
Electric
Engine Type
Petrol MHEV, Diesel
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Reduction Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
286 - 601 HP
Power HP
116 - 320 HP
Acceleration 0-100km/h
3.7 - 6 s
Acceleration 0-100km/h
5.5 - 11.5 s
Max Speed
-
Max Speed
188 - 250 km/h
Torque
400 - 795 Nm
Torque
230 - 400 Nm
Number of Cylinders
-
Number of Cylinders
4
Power kW
210 - 442 kW
Power kW
85 - 235 kW
Engine capacity
-
Engine capacity
1332 - 1991 cm3

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
A
CO2 Efficiency Class
E, F, G
Brand
BMW
Brand
Mercedes-Benz

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What drivetrain options does the BMW i4 have?

The BMW i4 is available as 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.