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BMW 8 Series Convertible vs Audi Q8 comparison

Compare performance (625 HP vs 640 HP), boot space and price (99,400 £ vs 77,300 £ ) at a glance. Find out which car is the better choice for you – BMW 8 Series Convertible or Audi Q8?

BMW 8 Series Convertible vs Audi Q8: Key differences

BMW 8 Series Convertible

  • marginally quicker 0–100 km/h
  • somewhat lighter
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Audi Q8

4.9 (1 Reviews)
rate
  • noticeably cheaper
  • marginally more power
  • clearly more efficient
  • substantially 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 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.

Audi Q8 is noticeably cheaper – starting at 77,300 £ , while the BMW 8 Series Convertible costs 99,400 £ . That’s a price difference of around 22,114 £.

Fuel consumption also shows a difference: the Audi Q8 uses 3.9 L/100km and is clearly more efficient than the BMW 8 Series Convertible with 6.9 L/100km. The difference is about 3 L/100km.

Q8

Engine and Performance:

Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.

When it comes to engine power, the Audi Q8 offers marginally more power – delivering 640 HP compared to 625 HP. That’s roughly 15 HP more horsepower.

When accelerating from 0 to 100 km/h, the BMW 8 Series Convertible is marginally quicker – completing the sprint in 3.3 s, while the Audi Q8 takes 3.6 s. That’s about 0.3 s quicker.

There’s also a difference in torque: the Audi Q8 delivers moderately more torque with 850 Nm compared to 750 Nm. That’s about 100 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: Audi Q8 offers more seats – 5 vs 4.

In terms of curb weight, BMW 8 Series Convertible is somewhat lighter – 1,915 kg compared to 2,175 kg. The difference is around 260 kg.

Looking at boot space, the Audi Q8 offers substantially more boot space – 605 L compared to 350 L. That’s a difference of about 255 L.

When it comes to payload, the Audi Q8 carries clearly more – 665 kg compared to 425 kg. That’s a difference of about 240 kg.

Who wins the race in the data check?

The Audi Q8 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 £77,300
Q8

Audi Q8

  • Engine Type Petrol MHEV, Diesel MHEV, Petrol, Plugin Hybrid
  • Transmission Automatic
  • Drive Type All-Wheel Drive
  • Power HP 231 - 640 HP
  • Consumption L/100km 3.9 - 13.1 L/100km
  • Electric Range 80 km
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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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Reviews BMW 8 Series Convertible

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Audi Q8

The Audi Q8 wraps coupe-like flair around a burly SUV stance, serving up a cabin dressed in premium materials and smart tech that puts comfort and swagger front and center. It’s composed and comfortable on long runs yet happy to play when asked, making it a tempting choice for buyers who want head-turning looks without surrendering everyday practicality.

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Reviews Audi Q8

4.9 (1 Reviews)
rate

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

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BMW 8 Series Convertible
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Costs and Consumption
Price
99,400 - 165,800 £
Price
77,300 - 137,100 £
Consumption L/100km
6.9 - 11.2 L/100km
Consumption L/100km
3.9 - 13.1 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
80 km
Battery Capacity
-
Battery Capacity
-
co2
180 - 255 g/km
co2
88 - 297 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
2,175 - 2,490 kg
Trunk capacity
350 L
Trunk capacity
439 - 605 L
Length
4,851 - 4,867 mm
Length
-
Width
1,902 - 1,907 mm
Width
1,995 - 2,007 mm
Height
1,345 - 1,353 mm
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
340 - 425 kg
Payload
620 - 665 kg

Engine and Performance
Engine Type
Diesel MHEV, Petrol
Engine Type
Petrol MHEV, Diesel MHEV, Petrol, Plugin Hybrid
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
231 - 640 HP
Acceleration 0-100km/h
3.3 - 5.5 s
Acceleration 0-100km/h
3.6 - 7.1 s
Max Speed
250 km/h
Max Speed
-
Torque
500 - 750 Nm
Torque
500 - 850 Nm
Number of Cylinders
6 - 8
Number of Cylinders
6 - 8
Power kW
245 - 460 kW
Power kW
170 - 471 kW
Engine capacity
2,993 - 4,395 cm3
Engine capacity
2,967 - 3,996 cm3

General
Model Year
2024
Model Year
2025
CO2 Efficiency Class
G
CO2 Efficiency Class
G, B
Brand
BMW
Brand
Audi
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.