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Audi A5 Avant vs Porsche 911 Convertible comparison

Compare performance (639 HP vs 711 HP), boot space and price (41,600 £ vs 138,000 £ ) at a glance. Find out which car is the better choice for you – Audi A5 Avant or Porsche 911 Convertible?

Audi A5 Avant vs Porsche 911 Convertible: Key differences

Audi A5 Avant

4.4 (1 Reviews)
rate
  • clearly cheaper
  • considerably more efficient
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Porsche 911 Convertible

  • moderately more power
  • significantly quicker 0–100 km/h
  • somewhat lighter
  • only slightly more trunk space
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All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.

By Achim Sedelmaier

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

A5 Avant

Costs and Efficiency:

When it comes to price and running costs, the biggest differences usually appear. This is often where you see which car fits your budget better in the long run.

Audi A5 Avant is clearly cheaper – starting at 41,600 £ , while the Porsche 911 Convertible costs 138,000 £ . That’s a price difference of around 96,386 £.

Fuel consumption also shows a difference: the Audi A5 Avant uses 2.1 L/100km and is considerably more efficient than the Porsche 911 Convertible with 10.5 L/100km. The difference is about 8.4 L/100km.

911 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 Porsche 911 Convertible offers moderately more power – delivering 711 HP compared to 639 HP. That’s roughly 72 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche 911 Convertible is significantly quicker – completing the sprint in 2.6 s, while the Audi A5 Avant takes 3.7 s. That’s about 1.1 s quicker.

There’s also a difference in torque: the Audi A5 Avant delivers very slightly more torque with 825 Nm compared to 800 Nm. That’s about 25 Nm more.

A5 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 A5 Avant offers more seats – 5 vs 4.

In terms of curb weight, Porsche 911 Convertible is somewhat lighter – 1,572 kg compared to 1,785 kg. The difference is around 213 kg.

Looking at boot space, the Porsche 911 Convertible offers only slightly more boot space – 373 L compared to 361 L. That’s a difference of about 12 L.

When it comes to payload, the Audi A5 Avant carries clearly more – 535 kg compared to 345 kg. That’s a difference of about 190 kg.

Who wins the race in the data check?

The Audi A5 Avant stands well ahead of its rival 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 £41,600
A5 Avant

Audi A5 Avant

  • Engine Type : Plugin Hybrid, Petrol, Diesel MHEV, Petrol MHEV
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive, Front-Wheel Drive
  • Power HP : 150 - 639 HP
  • Consumption L/100km : 2.1 - 7.7 L/100km
  • Electric Range : 83 - 108 km
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Frequently compared as well

Audi A5 Avant
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Porsche 911 Convertible

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Audi A5 Avant

The Audi A5 Avant dresses like a sleek coupe but carries like a sensible estate, offering buyers a rare blend of glamour and everyday practicality. Inside, the cabin feels beautifully sorted and the drive is composed and engaging, making routine errands feel a touch more enjoyable than they have any right to be.

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Reviews Audi A5 Avant

4.4 (1 Reviews)
rate
Hje
10 May 2026, 10:01:51

I do a lot of highway and generally long distance driving where A5 is superior to BMW 3.

How do you mainly use this car? (optional): Long-distance driver
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

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

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

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Porsche 911 Convertible

Costs and Consumption
Price
41,600 - 92,400 £
Price
138,000 - 244,500 £
Consumption L/100km
2.1 - 7.7 L/100km
Consumption L/100km
10.5 - 13.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
83 - 108 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
47 - 175 g/km
co2
237 - 310 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Estate
Body Type
Convertible
Seats
5
Seats
2 - 4
Doors
-
Doors
-
Curb weight
1,785 - 2,445 kg
Curb weight
1,572 - 1,900 kg
Trunk capacity
361 L
Trunk capacity
163 - 373 L
Length
-
Length
-
Width
1,860 - 1,952 mm
Width
1,852 - 1,900 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
480 - 535 kg
Payload
195 - 345 kg

Engine and Performance
Engine Type
Plugin Hybrid, Petrol, Diesel MHEV, Petrol MHEV
Engine Type
Petrol, Full Hybrid
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
Dual-Clutch Automatic, Automatic Gearbox
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
All-Wheel Drive, Front-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
150 - 639 HP
Power HP
394 - 711 HP
Acceleration 0-100km/h
3.7 - 9.8 s
Acceleration 0-100km/h
2.6 - 4.7 s
Max Speed
-
Max Speed
-
Torque
280 - 825 Nm
Torque
450 - 800 Nm
Number of Cylinders
4 - 6
Number of Cylinders
6
Power kW
110 - 470 kW
Power kW
290 - 523 kW
Engine capacity
1,968 - 2,995 cm3
Engine capacity
2,981 - 3,996 cm3

General
Model Year
2,025 - 2,026
Model Year
2,024 - 2,026
CO2 Efficiency Class
B, E, F, D
CO2 Efficiency Class
G
Brand
Audi
Brand
Porsche
What drive types are available for the Audi A5 Avant?

Available configurations include All-Wheel Drive or Front-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.