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BMW 8 Series Convertible vs Aston Martin DBX comparison

Compare performance (625 HP vs 727 HP), boot space and price (99,400 £ vs 168,900 £ ) at a glance. Find out which car is the better choice for you – BMW 8 Series Convertible or Aston Martin DBX?

BMW 8 Series Convertible vs Aston Martin DBX: Key differences

BMW 8 Series Convertible

  • substantially cheaper
  • substantially more efficient
  • markedly lighter
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Aston Martin DBX

  • somewhat more power
  • 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.

BMW 8 Series Convertible is substantially cheaper – starting at 99,400 £ , while the Aston Martin DBX costs 168,900 £ . That’s a price difference of around 69,429 £.

Fuel consumption also shows a difference: the BMW 8 Series Convertible uses 6.9 L/100km and is substantially more efficient than the Aston Martin DBX with 14.2 L/100km. The difference is about 7.3 L/100km.

DBX

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 Aston Martin DBX offers somewhat more power – delivering 727 HP compared to 625 HP. That’s roughly 102 HP more horsepower.

Both models accelerate almost equally fast – 3.3 s from 0 to 100 km/h.

There’s also a difference in torque: the Aston Martin DBX delivers moderately more torque with 900 Nm compared to 750 Nm. That’s about 150 Nm more.

8 Series Convertible

Space and Everyday Use:

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

Seats: Aston Martin DBX offers more seats – 5 vs 4.

In terms of curb weight, BMW 8 Series Convertible is markedly lighter – 1,915 kg compared to 2,320 kg. The difference is around 405 kg.

Looking at boot space, the Aston Martin DBX offers markedly more boot space – 491 L compared to 350 L. That’s a difference of about 141 L.

When it comes to payload, the Aston Martin DBX carries substantially more – 710 kg compared to 425 kg. That’s a difference of about 285 kg.

Who wins the race in the data check?

The BMW 8 Series Convertible is decisively 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 £99,400
8 Series Convertible

BMW 8 Series Convertible

  • Engine Type Diesel MHEV, Petrol
  • Transmission Automatic
  • Drive Type All-Wheel Drive, Rear-Wheel Drive
  • Power HP 333 - 625 HP
  • Consumption L/100km 6.9 - 11.2 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 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

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Aston Martin DBX

With the DBX, Aston Martin has wrapped its trademark sports-car drama into a high-riding package that looks like it could sprint off the driveway and into a gala, while the cabin pampers occupants with handcrafted leather and theatrical attention to detail. Behind the wheel it feels like a grand tourer that learned how to tackle country roads, serving up surprising agility for such a stately presence and keeping rivals honest with its rarefied blend of performance and luxury.

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Reviews Aston Martin DBX

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Aston Martin DBX

Costs and Consumption
Price
99,400 - 165,800 £
Price
168,900 - 213,400 £
Consumption L/100km
6.9 - 11.2 L/100km
Consumption L/100km
14.2 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
180 - 255 g/km
co2
323 g/km
Fuel tank capacity
66 - 68 L
Fuel tank capacity
-

Dimensions and Body
Body Type
Convertible
Body Type
SUV
Seats
4
Seats
5
Doors
2
Doors
-
Curb weight
1,915 - 2,125 kg
Curb weight
2,320 kg
Trunk capacity
350 L
Trunk capacity
491 L
Length
4,851 - 4,867 mm
Length
-
Width
1,902 - 1,907 mm
Width
1,998 mm
Height
1,345 - 1,353 mm
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
340 - 425 kg
Payload
710 kg

Engine and Performance
Engine Type
Diesel MHEV, Petrol
Engine Type
Petrol
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Automatic Gearbox
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
333 - 625 HP
Power HP
707 - 727 HP
Acceleration 0-100km/h
3.3 - 5.5 s
Acceleration 0-100km/h
3.3 s
Max Speed
250 km/h
Max Speed
-
Torque
500 - 750 Nm
Torque
900 Nm
Number of Cylinders
6 - 8
Number of Cylinders
8
Power kW
245 - 460 kW
Power kW
520 - 535 kW
Engine capacity
2,993 - 4,395 cm3
Engine capacity
3,982 cm3

General
Model Year
2024
Model Year
2,022 - 2,025
CO2 Efficiency Class
G
CO2 Efficiency Class
G
Brand
BMW
Brand
Aston Martin
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.