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Mazda MX-5 Roadster vs Mercedes GLB comparison
Compare performance (132 HP vs 354 HP), boot space and price (28,400 £ vs 43,200 £ ) at a glance. Find out which car is the better choice for you – Mazda MX-5 Roadster or Mercedes GLB?
Mazda MX-5 Roadster 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.
MX-5 Roadster
Costs and Efficiency:
Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.
Mazda MX-5 Roadster is significantly cheaper – starting at 28,400 £ , while the Mercedes GLB costs 43,200 £ . That’s a price difference of around 14,749 £.
Fuel consumption also shows a difference: the Mercedes GLB uses 5.7 L/100km and is only slightly more efficient than the Mazda MX-5 Roadster with 6.2 L/100km. The difference is about 0.5 L/100km.
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 Mercedes GLB offers considerably more power – delivering 354 HP compared to 132 HP. That’s roughly 222 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 Mazda MX-5 Roadster takes 8.3 s. That’s about 2.8 s quicker.
There’s also a difference in torque: the Mercedes GLB delivers clearly more torque with 515 Nm compared to 152 Nm. That’s about 363 Nm more.
MX-5 Roadster
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.
Seats: Mercedes GLB offers more seats – 5 vs 2.
In terms of curb weight, Mazda MX-5 Roadster is considerably lighter – 1,078 kg compared to 1,840 kg. The difference is around 762 kg.
Looking at boot space, the Mercedes GLB offers considerably more boot space – 540 L compared to 130 L. That’s a difference of about 410 L.
When it comes to payload, the Mercedes GLB carries considerably more – 505 kg compared to 152 kg. That’s a difference of about 353 kg.
Who wins the race in the data check?
The Mercedes GLB stands well ahead of its rival 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
Mercedes GLB
Mazda MX-5 Roadster
Mercedes GLB
Costs and Consumption
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Engine and Performance
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Dimensions and Body
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Mazda MX-5 Roadster
The Mazda MX-5 is a featherweight, open-top sports car that turns ordinary roads into a grin-inducing playground thanks to razor-sharp steering and an engaging, tactile gearbox. It won’t swallow the weekly shopping or ski bags, but for anyone after pure driving fun and sun-on-your-face weekends, few cars match its sheer charm and value.
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
Mazda MX-5 Roadster
Mercedes GLB
Costs and Consumption |
|
|---|---|
|
Price
28,400 - 33,800 £
|
Price
43,200 - 62,400 £
|
|
Consumption L/100km
6.2 L/100km
|
Consumption L/100km
5.7 - 6.1 L/100km
|
|
Consumption kWh/100km
-
|
Consumption kWh/100km
15.4 - 15.9 kWh/100km
|
|
Electric Range
-
|
Electric Range
431 - 631 km
|
|
Battery Capacity
-
|
Battery Capacity
-
|
|
co2
140 g/km
|
co2
0 - 138 g/km
|
|
Fuel tank capacity
-
|
Fuel tank capacity
-
|
Dimensions and Body |
|
|---|---|
|
Body Type
Roadster
|
Body Type
SUV
|
|
Seats
2
|
Seats
5
|
|
Doors
-
|
Doors
-
|
|
Curb weight
1,078 kg
|
Curb weight
1,840 - 2,280 kg
|
|
Trunk capacity
130 L
|
Trunk capacity
540 L
|
|
Length
-
|
Length
-
|
|
Width
1,735 mm
|
Width
1,861 mm
|
|
Height
-
|
Height
-
|
|
Max trunk capacity
-
|
Max trunk capacity
-
|
|
Payload
152 kg
|
Payload
485 - 505 kg
|
Engine and Performance |
|
|---|---|
|
Engine Type
Petrol
|
Engine Type
Electric, Full Hybrid
|
|
Transmission
Manuel
|
Transmission
Automatic
|
|
Transmission Detail
Manual Gearbox
|
Transmission Detail
Reduction Gearbox
|
|
Drive Type
Rear-Wheel Drive
|
Drive Type
Rear-Wheel Drive, All-Wheel Drive
|
|
Power HP
132 HP
|
Power HP
156 - 354 HP
|
|
Acceleration 0-100km/h
8.3 s
|
Acceleration 0-100km/h
5.5 - 9.7 s
|
|
Max Speed
-
|
Max Speed
-
|
|
Torque
152 Nm
|
Torque
280 - 515 Nm
|
|
Number of Cylinders
4
|
Number of Cylinders
4
|
|
Power kW
97 kW
|
Power kW
115 - 260 kW
|
|
Engine capacity
1,496 cm3
|
Engine capacity
1,499 cm3
|
General |
|
|---|---|
|
Model Year
2025
|
Model Year
2026
|
|
CO2 Efficiency Class
E
|
CO2 Efficiency Class
A, D, E
|
|
Brand
Mazda
|
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.