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Audi A6 Avant vs Porsche 911 Convertible comparison

Compare performance (367 HP vs 711 HP), boot space and price (49,700 £ vs 138,000 £ ) at a glance. Find out which car is the better choice for you – Audi A6 Avant or Porsche 911 Convertible?

Audi A6 Avant vs Porsche 911 Convertible: Key differences

Audi A6 Avant

  • significantly cheaper
  • considerably more efficient
  • substantially more trunk space
details

Porsche 911 Convertible

  • considerably more power
  • considerably quicker 0–100 km/h
  • a bit lighter
details

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 Porsche 911 Convertible costs 138,000 £ . That’s a price difference of around 88,286 £.

Fuel consumption also shows a difference: the Audi A6 Avant uses 2.3 L/100km and is considerably more efficient than the Porsche 911 Convertible with 10.5 L/100km. The difference is about 8.2 L/100km.

911 Convertible

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 Porsche 911 Convertible offers considerably more power – delivering 711 HP compared to 367 HP. That’s roughly 344 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche 911 Convertible is considerably quicker – completing the sprint in 2.6 s, while the Audi A6 Avant takes 4.7 s. That’s about 2.1 s quicker.

There’s also a difference in torque: the Porsche 911 Convertible delivers noticeably more torque with 800 Nm compared to 580 Nm. That’s about 220 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, Porsche 911 Convertible is a bit lighter – 1,655 kg compared to 1,865 kg. The difference is around 210 kg.

Looking at boot space, the Audi A6 Avant offers substantially more boot space – 503 L compared to 163 L. That’s a difference of about 340 L.

When it comes to payload, the Audi A6 Avant carries noticeably more – 570 kg compared to 345 kg. That’s a difference of about 225 kg.

Who wins the race in the data check?

The Audi A6 Avant 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 £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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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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Reviews Audi A6 Avant

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Porsche 911 Convertible

The Porsche 911 Cabriolet transforms the iconic silhouette into an open‑air weapon, offering roof-down glamour and razor-sharp handling that still feels perfectly composed on normal roads. It’s the kind of car that serves daily duties with surprising ease while delivering intoxicating engine music and a grin factor that makes every trip feel like a small victory.

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Reviews Porsche 911 Convertible

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Audi A6 Avant
Porsche 911 Convertible

Costs and Consumption
Price
49,700 - 70,200 £
Price
138,000 - 244,500 £
Consumption L/100km
2.3 - 7.5 L/100km
Consumption L/100km
10.5 - 11.7 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
237 - 265 g/km
Fuel tank capacity
-
Fuel tank capacity
63 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
1,655 - 1,900 kg
Trunk capacity
404 - 503 L
Trunk capacity
163 L
Length
-
Length
4,542 mm
Width
1,875 mm
Width
1,852 - 1,900 mm
Height
-
Height
1,292 mm
Max trunk capacity
-
Max trunk capacity
-
Payload
535 - 570 kg
Payload
275 - 345 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV, Diesel MHEV, Plugin Hybrid
Engine Type
Petrol, Full Hybrid
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
204 - 367 HP
Power HP
394 - 711 HP
Acceleration 0-100km/h
4.7 - 8.3 s
Acceleration 0-100km/h
2.6 - 4.7 s
Max Speed
-
Max Speed
293 km/h
Torque
340 - 580 Nm
Torque
450 - 800 Nm
Number of Cylinders
4 - 6
Number of Cylinders
6
Power kW
150 - 270 kW
Power kW
290 - 523 kW
Engine capacity
1,968 - 2,995 cm3
Engine capacity
2,981 - 3,591 cm3

General
Model Year
2025
Model Year
2,024 - 2,026
CO2 Efficiency Class
F, D, E, B
CO2 Efficiency Class
G
Brand
Audi
Brand
Porsche
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.