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Porsche 911 Convertible vs Audi A6 Avant comparison

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

Porsche 911 Convertible vs Audi A6 Avant: Key differences

Porsche 911 Convertible

  • substantially more power
  • clearly quicker 0–100 km/h
  • somewhat lighter
details

Audi A6 Avant

  • significantly cheaper
  • considerably more efficient
  • visibly more trunk space
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By Achim Sedelmaier

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

911 Convertible

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

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.

A6 Avant

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 Porsche 911 Convertible offers substantially 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 clearly 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 clearly more torque with 800 Nm compared to 580 Nm. That’s about 220 Nm more.

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 somewhat lighter – 1,572 kg compared to 1,865 kg. The difference is around 293 kg.

Looking at boot space, the Audi A6 Avant offers visibly more boot space – 503 L compared to 373 L. That’s a difference of about 130 L.

When it comes to payload, the Audi A6 Avant carries markedly 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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View detailed analysis

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View detailed analysis

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View detailed analysis

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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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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Porsche 911 Convertible
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Costs and Consumption
Price
138,000 - 244,500 £
Price
49,700 - 70,200 £
Consumption L/100km
10.5 - 13.7 L/100km
Consumption L/100km
2.3 - 7.5 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
94 - 101 km
Battery Capacity
-
Battery Capacity
-
co2
237 - 310 g/km
co2
53 - 170 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Convertible
Body Type
Estate
Seats
2 - 4
Seats
5
Doors
-
Doors
-
Curb weight
1,572 - 1,900 kg
Curb weight
1,865 - 2,240 kg
Trunk capacity
163 - 373 L
Trunk capacity
404 - 503 L
Length
-
Length
-
Width
1,852 - 1,900 mm
Width
1,875 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
195 - 345 kg
Payload
535 - 570 kg

Engine and Performance
Engine Type
Petrol, Full Hybrid
Engine Type
Petrol, Petrol MHEV, Diesel MHEV, Plugin Hybrid
Transmission
Manuel, Automatic
Transmission
Automatic
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Transmission Detail
Dual-Clutch Automatic
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
394 - 711 HP
Power HP
204 - 367 HP
Acceleration 0-100km/h
2.6 - 4.7 s
Acceleration 0-100km/h
4.7 - 8.3 s
Max Speed
-
Max Speed
-
Torque
450 - 800 Nm
Torque
340 - 580 Nm
Number of Cylinders
6
Number of Cylinders
4 - 6
Power kW
290 - 523 kW
Power kW
150 - 270 kW
Engine capacity
2,981 - 3,996 cm3
Engine capacity
1,968 - 2,995 cm3

General
Model Year
2,024 - 2,026
Model Year
2025
CO2 Efficiency Class
G
CO2 Efficiency Class
F, D, E, B
Brand
Porsche
Brand
Audi
What drivetrain options does the Porsche 911 Convertible have?

The Porsche 911 Convertible is offered with Rear-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.