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Audi A6 Avant vs BMW 8 Series Convertible comparison

Compare performance (367 HP vs 625 HP), boot space and price (49,700 £ vs 99,400 £ ) at a glance. Find out which car is the better choice for you – Audi A6 Avant or BMW 8 Series Convertible?

Audi A6 Avant vs BMW 8 Series Convertible: Key differences

Audi A6 Avant

  • significantly cheaper
  • substantially more efficient
  • very slightly lighter
  • clearly more trunk space
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BMW 8 Series Convertible

  • substantially more power
  • substantially quicker 0–100 km/h
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By Achim Sedelmaier

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

A6 Avant

Costs and Efficiency:

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

Audi A6 Avant is significantly cheaper – starting at 49,700 £ , while the BMW 8 Series Convertible costs 99,400 £ . That’s a price difference of around 49,714 £.

Fuel consumption also shows a difference: the Audi A6 Avant uses 2.3 L/100km and is substantially more efficient than the BMW 8 Series Convertible with 6.9 L/100km. The difference is about 4.6 L/100km.

8 Series Convertible

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 substantially more power – delivering 625 HP compared to 367 HP. That’s roughly 258 HP more horsepower.

When accelerating from 0 to 100 km/h, the BMW 8 Series Convertible is substantially quicker – completing the sprint in 3.3 s, while the Audi A6 Avant takes 4.7 s. That’s about 1.4 s quicker.

There’s also a difference in torque: the BMW 8 Series Convertible delivers noticeably more torque with 750 Nm compared to 580 Nm. That’s about 170 Nm more.

A6 Avant

Space and Everyday Use:

Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.

Seats: Audi A6 Avant offers more seats – 5 vs 4.

In terms of curb weight, Audi A6 Avant is very slightly lighter – 1,865 kg compared to 1,915 kg. The difference is around 50 kg.

Looking at boot space, the Audi A6 Avant offers clearly more boot space – 503 L compared to 350 L. That’s a difference of about 153 L.

When it comes to payload, the Audi A6 Avant carries visibly more – 570 kg compared to 425 kg. That’s a difference of about 145 kg.

Who wins the race in the data check?

The Audi A6 Avant 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 £49,700
A6 Avant

Audi A6 Avant

  • Engine Type : Petrol, Petrol MHEV, Diesel MHEV, Plugin Hybrid
  • Transmission : Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 204 - 367 HP
  • Consumption L/100km : 2.3 - 7.5 L/100km
  • Electric Range : 94 - 101 km
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BMW 8 Series Convertible

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Audi A6 Avant

The Audi A6 Avant wraps executive poise and usable practicality into an impeccably finished estate that makes everyday driving feel noticeably more grown-up. It serves up a calm, composed ride and clever packaging for buyers who want space and refinement without ostentation — the sensible choice that still manages to impress.

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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 A6 Avant
BMW 8 Series Convertible

Costs and Consumption
Price
49,700 - 70,200 £
Price
99,400 - 165,800 £
Consumption L/100km
2.3 - 7.5 L/100km
Consumption L/100km
6.9 - 11.2 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
94 - 101 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
53 - 170 g/km
co2
180 - 255 g/km
Fuel tank capacity
-
Fuel tank capacity
66 - 68 L

Dimensions and Body
Body Type
Estate
Body Type
Convertible
Seats
5
Seats
4
Doors
-
Doors
2
Curb weight
1,865 - 2,240 kg
Curb weight
1,915 - 2,125 kg
Trunk capacity
404 - 503 L
Trunk capacity
350 L
Length
-
Length
4,851 - 4,867 mm
Width
1,875 mm
Width
1,902 - 1,907 mm
Height
-
Height
1,345 - 1,353 mm
Max trunk capacity
-
Max trunk capacity
-
Payload
535 - 570 kg
Payload
340 - 425 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV, Diesel MHEV, Plugin Hybrid
Engine Type
Diesel MHEV, Petrol
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Automatic Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Power HP
204 - 367 HP
Power HP
333 - 625 HP
Acceleration 0-100km/h
4.7 - 8.3 s
Acceleration 0-100km/h
3.3 - 5.5 s
Max Speed
-
Max Speed
250 km/h
Torque
340 - 580 Nm
Torque
500 - 750 Nm
Number of Cylinders
4 - 6
Number of Cylinders
6 - 8
Power kW
150 - 270 kW
Power kW
245 - 460 kW
Engine capacity
1,968 - 2,995 cm3
Engine capacity
2,993 - 4,395 cm3

General
Model Year
2025
Model Year
2024
CO2 Efficiency Class
F, D, E, B
CO2 Efficiency Class
G
Brand
Audi
Brand
BMW
Is the Audi A6 Avant offered with different drivetrains?

The Audi A6 Avant is offered with Front-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.