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Hyundai IONIQ 6 vs Mercedes GLB comparison
Compare performance (650 HP vs 354 HP), boot space and price (39,000 £ vs 43,200 £ ) at a glance. Find out which car is the better choice for you – Hyundai IONIQ 6 or Mercedes GLB?
Hyundai IONIQ 6 vs Mercedes GLB: Key differences
All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.
IONIQ 6
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.
Hyundai IONIQ 6 is a bit cheaper – starting at 39,000 £ , while the Mercedes GLB costs 43,200 £ . That’s a price difference of around 4,155 £.
In terms of energy consumption, the Hyundai IONIQ 6 is moderately more efficient: consuming 13.4 kWh/100km compared to 15.4 kWh/100km for the Mercedes GLB. That’s a difference of about 2 kWh/100km.
As for electric range, the Hyundai IONIQ 6 offers marginally more range – reaching up to 680 km, about 49 km more than the Mercedes GLB.
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 Hyundai IONIQ 6 offers clearly more power – delivering 650 HP compared to 354 HP. That’s roughly 296 HP more horsepower.
When accelerating from 0 to 100 km/h, the Hyundai IONIQ 6 is considerably quicker – completing the sprint in 3.3 s, while the Mercedes GLB takes 5.5 s. That’s about 2.2 s quicker.
There’s also a difference in torque: the Hyundai IONIQ 6 delivers clearly more torque with 770 Nm compared to 515 Nm. That’s about 255 Nm more.
IONIQ 6
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 terms of curb weight, Mercedes GLB is very slightly lighter – 1,840 kg compared to 1,892 kg. The difference is around 52 kg.
Looking at boot space, the Mercedes GLB offers markedly more boot space – 540 L compared to 401 L. That’s a difference of about 139 L.
When it comes to payload, the Mercedes GLB carries a bit more – 505 kg compared to 438 kg. That’s a difference of about 67 kg.
Who wins the race in the data check?
The Hyundai IONIQ 6 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 £39,000
Hyundai IONIQ 6
Hyundai IONIQ 6
Mercedes GLB
Costs and Consumption
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Engine and Performance
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Dimensions and Body
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Hyundai IONIQ 6
The Hyundai IONIQ 6 glides down the road with a poise that feels more runway model than commuter car, its sleek silhouette promising efficiency without trying too hard. Inside, a calm, minimalist cabin packed with clever, usable tech makes it a compelling choice for buyers who want electric motoring that's smart, stylish and quietly practical.
details
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
Hyundai IONIQ 6
Mercedes GLB
Costs and Consumption |
|
|---|---|
|
Price
39,000 - 65,100 £
|
Price
43,200 - 62,400 £
|
|
Consumption L/100km
-
|
Consumption L/100km
5.7 - 6.1 L/100km
|
|
Consumption kWh/100km
13.4 - 18.7 kWh/100km
|
Consumption kWh/100km
15.4 - 15.9 kWh/100km
|
|
Electric Range
487 - 680 km
|
Electric Range
431 - 631 km
|
|
Battery Capacity
-
|
Battery Capacity
-
|
|
co2
0 g/km
|
co2
0 - 138 g/km
|
|
Fuel tank capacity
-
|
Fuel tank capacity
-
|
Dimensions and Body |
|
|---|---|
|
Body Type
Hatchback
|
Body Type
SUV
|
|
Seats
5
|
Seats
5
|
|
Doors
-
|
Doors
-
|
|
Curb weight
1,892 - 2,241 kg
|
Curb weight
1,840 - 2,280 kg
|
|
Trunk capacity
371 - 401 L
|
Trunk capacity
540 L
|
|
Length
-
|
Length
-
|
|
Width
1,880 - 1,940 mm
|
Width
1,861 mm
|
|
Height
-
|
Height
-
|
|
Max trunk capacity
-
|
Max trunk capacity
-
|
|
Payload
386 - 438 kg
|
Payload
485 - 505 kg
|
Engine and Performance |
|
|---|---|
|
Engine Type
Electric
|
Engine Type
Electric, Full Hybrid
|
|
Transmission
Automatic
|
Transmission
Automatic
|
|
Transmission Detail
Reduction Gearbox
|
Transmission Detail
Reduction Gearbox
|
|
Drive Type
All-Wheel Drive, Rear-Wheel Drive
|
Drive Type
Rear-Wheel Drive, All-Wheel Drive
|
|
Power HP
170 - 650 HP
|
Power HP
156 - 354 HP
|
|
Acceleration 0-100km/h
3.3 - 8.3 s
|
Acceleration 0-100km/h
5.5 - 9.7 s
|
|
Max Speed
-
|
Max Speed
-
|
|
Torque
350 - 770 Nm
|
Torque
280 - 515 Nm
|
|
Number of Cylinders
-
|
Number of Cylinders
4
|
|
Power kW
125 - 478 kW
|
Power kW
115 - 260 kW
|
|
Engine capacity
-
|
Engine capacity
1,499 cm3
|
General |
|
|---|---|
|
Model Year
2026
|
Model Year
2026
|
|
CO2 Efficiency Class
A
|
CO2 Efficiency Class
A, D, E
|
|
Brand
Hyundai
|
Brand
Mercedes-Benz
|
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.