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BMW 4 Series Convertible vs Mazda MX-5 Roadster comparison

Compare performance (530 HP vs 132 HP), boot space and price (52,600 £ vs 29,000 £ ) at a glance. Find out which car is the better choice for you – BMW 4 Series Convertible or Mazda MX-5 Roadster?

BMW 4 Series Convertible vs Mazda MX-5 Roadster: Key differences

BMW 4 Series Convertible

  • clearly more power
  • moderately more efficient
  • substantially quicker 0–100 km/h
  • clearly more trunk space
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Mazda MX-5 Roadster

  • substantially cheaper
  • clearly lighter
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By Achim Sedelmaier

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

4 Series Convertible

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.

Mazda MX-5 Roadster is substantially cheaper – starting at 29,000 £ , while the BMW 4 Series Convertible costs 52,600 £ . That’s a price difference of around 23,666 £.

Fuel consumption also shows a difference: the BMW 4 Series Convertible uses 5.2 L/100km and is moderately more efficient than the Mazda MX-5 Roadster with 6.2 L/100km. The difference is about 1 L/100km.

MX-5 Roadster

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 4 Series Convertible offers clearly more power – delivering 530 HP compared to 132 HP. That’s roughly 398 HP more horsepower.

When accelerating from 0 to 100 km/h, the BMW 4 Series Convertible is substantially quicker – completing the sprint in 3.7 s, while the Mazda MX-5 Roadster takes 8.3 s. That’s about 4.6 s quicker.

There’s also a difference in torque: the BMW 4 Series Convertible delivers significantly more torque with 700 Nm compared to 152 Nm. That’s about 548 Nm more.

4 Series Convertible

Space and Everyday Use:

Whether family car or daily driver – which one offers more room, flexibility and comfort?

Seats: BMW 4 Series Convertible offers more seats – 4 vs 2.

In terms of curb weight, Mazda MX-5 Roadster is clearly lighter – 1,078 kg compared to 1,765 kg. The difference is around 687 kg.

Looking at boot space, the BMW 4 Series Convertible offers clearly more boot space – 385 L compared to 130 L. That’s a difference of about 255 L.

When it comes to payload, the BMW 4 Series Convertible carries considerably more – 420 kg compared to 152 kg. That’s a difference of about 268 kg.

Who wins the race in the data check?

The BMW 4 Series Convertible is clearly superior 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 £52,600
4 Series Convertible

BMW 4 Series Convertible

  • Engine Type Diesel MHEV, Petrol, Petrol MHEV
  • Transmission Automatic
  • Drive Type Rear-Wheel Drive, All-Wheel Drive
  • Power HP 184 - 530 HP
  • Consumption L/100km 5.2 - 10.2 L/100km
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BMW 4 Series Convertible

The BMW 4 Series Convertible blends coupe-like elegance with open-top drama, its sleek profile and distinctive grille demanding attention whether the roof’s up or down. Behind the wheel it serves up taut handling and a refined ride, making it a rewarding choice for drivers who want sporty character without sacrificing everyday comfort — and yes, it looks spectacular when you drop the top.

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Reviews BMW 4 Series Convertible

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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.

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Reviews Mazda MX-5 Roadster

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Costs and Consumption
Price
52,600 - 97,800 £
Price
29,000 - 34,300 £
Consumption L/100km
5.2 - 10.2 L/100km
Consumption L/100km
6.2 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
136 - 231 g/km
co2
140 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Convertible
Body Type
Roadster
Seats
4
Seats
2
Doors
-
Doors
-
Curb weight
1,765 - 2,055 kg
Curb weight
1,078 kg
Trunk capacity
385 L
Trunk capacity
130 L
Length
-
Length
-
Width
1,852 - 1,887 mm
Width
1,735 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
345 - 420 kg
Payload
152 kg

Engine and Performance
Engine Type
Diesel MHEV, Petrol, Petrol MHEV
Engine Type
Petrol
Transmission
Automatic
Transmission
Manuel
Transmission Detail
Automatic Gearbox
Transmission Detail
Manual Gearbox
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive
Power HP
184 - 530 HP
Power HP
132 HP
Acceleration 0-100km/h
3.7 - 8.2 s
Acceleration 0-100km/h
8.3 s
Max Speed
-
Max Speed
-
Torque
300 - 700 Nm
Torque
152 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4
Power kW
135 - 390 kW
Power kW
97 kW
Engine capacity
1,995 - 2,998 cm3
Engine capacity
1,496 cm3

General
Model Year
2,024 - 2,025
Model Year
2025
CO2 Efficiency Class
E, F, G
CO2 Efficiency Class
E
Brand
BMW
Brand
Mazda
What drive types are available for the BMW 4 Series Convertible?

The BMW 4 Series Convertible is available as Rear-Wheel Drive or All-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.