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BMW 8 Series Convertible vs Mazda 3 Sedan comparison

Compare performance (625 HP vs 186 HP), boot space and price (99,400 £ vs 25,400 £ ) at a glance. Find out which car is the better choice for you – BMW 8 Series Convertible or Mazda 3 Sedan?

BMW 8 Series Convertible vs Mazda 3 Sedan: Key differences

BMW 8 Series Convertible

  • clearly more power
  • considerably quicker 0–100 km/h
details

Mazda 3 Sedan

4.7 (1 Reviews)
rate
  • significantly cheaper
  • clearly more efficient
  • markedly lighter
  • markedly more trunk space
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By Achim Sedelmaier

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

8 Series Convertible

Costs and Efficiency:

Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.

Mazda 3 Sedan is significantly cheaper – starting at 25,400 £ , while the BMW 8 Series Convertible costs 99,400 £ . That’s a price difference of around 73,980 £.

Fuel consumption also shows a difference: the Mazda 3 Sedan uses 5.5 L/100km and is clearly more efficient than the BMW 8 Series Convertible with 6.9 L/100km. The difference is about 1.4 L/100km.

3 Sedan

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 8 Series Convertible offers clearly more power – delivering 625 HP compared to 186 HP. That’s roughly 439 HP more horsepower.

When accelerating from 0 to 100 km/h, the BMW 8 Series Convertible is considerably quicker – completing the sprint in 3.3 s, while the Mazda 3 Sedan takes 8.1 s. That’s about 4.8 s quicker.

There’s also a difference in torque: the BMW 8 Series Convertible delivers significantly more torque with 750 Nm compared to 240 Nm. That’s about 510 Nm more.

8 Series Convertible

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: Mazda 3 Sedan offers more seats – 5 vs 4.

In terms of curb weight, Mazda 3 Sedan is markedly lighter – 1,417 kg compared to 1,915 kg. The difference is around 498 kg.

Looking at boot space, the Mazda 3 Sedan offers markedly more boot space – 450 L compared to 350 L. That’s a difference of about 100 L.

When it comes to payload, the Mazda 3 Sedan carries moderately more – 501 kg compared to 425 kg. That’s a difference of about 76 kg.

Who wins the race in the data check?

The Mazda 3 Sedan is barely 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.

from £25,400
3 Sedan

Mazda 3 Sedan

  • Engine Type Petrol MHEV
  • Transmission Manuel, Automatic
  • Drive Type Front-Wheel Drive
  • Power HP 140 - 186 HP
  • Consumption L/100km 5.5 - 6 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 8 Series Convertible

The BMW 8 Series Convertible is a head-turning grand tourer that drops its roof with the kind of theatrical flourish you expect from a modern Bavarian showboat. It wraps occupants in sumptuous materials and driver-focused polish, offering effortless long-distance comfort and just enough drama to make every arrival feel like an occasion.

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P90343983_highRes_the-new-bmw-m850i-xd
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Reviews BMW 8 Series Convertible

No reviews yet. Share your experience and help others decide.

Mazda 3 Sedan

The Mazda 3 Sedan dresses like a compact premium car, with sculpted lines and an interior that punches well above its class. It rewards drivers with eager handling and a composed, comfortable ride that turns routine runs into something a bit more enjoyable — proof that style and substance can share the same key.

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Reviews Mazda 3 Sedan

4.7 (1 Reviews)
rate

No reviews yet. Share your experience and help others decide.

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BMW 8 Series Convertible
Mazda 3 Sedan

Costs and Consumption
Price
99,400 - 165,800 £
Price
25,400 - 34,700 £
Consumption L/100km
6.9 - 11.2 L/100km
Consumption L/100km
5.5 - 6 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
180 - 255 g/km
co2
123 - 137 g/km
Fuel tank capacity
66 - 68 L
Fuel tank capacity
-

Dimensions and Body
Body Type
Convertible
Body Type
Sedan
Seats
4
Seats
5
Doors
2
Doors
-
Curb weight
1,915 - 2,125 kg
Curb weight
1,417 - 1,468 kg
Trunk capacity
350 L
Trunk capacity
450 L
Length
4,851 - 4,867 mm
Length
-
Width
1,902 - 1,907 mm
Width
1,795 mm
Height
1,345 - 1,353 mm
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
340 - 425 kg
Payload
482 - 501 kg

Engine and Performance
Engine Type
Diesel MHEV, Petrol
Engine Type
Petrol MHEV
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Manual Gearbox, Automatic Gearbox
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
333 - 625 HP
Power HP
140 - 186 HP
Acceleration 0-100km/h
3.3 - 5.5 s
Acceleration 0-100km/h
8.1 - 9.8 s
Max Speed
250 km/h
Max Speed
-
Torque
500 - 750 Nm
Torque
238 - 240 Nm
Number of Cylinders
6 - 8
Number of Cylinders
4
Power kW
245 - 460 kW
Power kW
103 - 137 kW
Engine capacity
2,993 - 4,395 cm3
Engine capacity
1,998 - 2,488 cm3

General
Model Year
2024
Model Year
2026
CO2 Efficiency Class
G
CO2 Efficiency Class
D, E
Brand
BMW
Brand
Mazda
What drivetrain options does the BMW 8 Series Convertible have?

Available configurations include All-Wheel Drive or Rear-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.