VS

Audi A8 vs Porsche 911 Convertible comparison

Compare performance (571 HP vs 711 HP), boot space and price (91,400 £ vs 138,000 £ ) at a glance. Find out which car is the better choice for you – Audi A8 or Porsche 911 Convertible?

Audi A8 vs Porsche 911 Convertible: Key differences

Audi A8

5 (1 Reviews)
rate
  • clearly cheaper
  • substantially more efficient
  • barely more trunk space
details

Porsche 911 Convertible

  • somewhat more power
  • significantly quicker 0–100 km/h
  • noticeably lighter
details

By Achim Sedelmaier

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

A8

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 A8 is clearly cheaper – starting at 91,400 £ , while the Porsche 911 Convertible costs 138,000 £ . That’s a price difference of around 46,629 £.

Fuel consumption also shows a difference: the Audi A8 uses 4.6 L/100km and is substantially more efficient than the Porsche 911 Convertible with 10.5 L/100km. The difference is about 5.9 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 somewhat more power – delivering 711 HP compared to 571 HP. That’s roughly 140 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 A8 takes 3.8 s. That’s about 1.2 s quicker.

Both models offer the same torque – 800 Nm.

A8

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 A8 offers more seats – 5 vs 4.

In terms of curb weight, Porsche 911 Convertible is noticeably lighter – 1,572 kg compared to 2,035 kg. The difference is around 463 kg.

Looking at boot space, the Audi A8 offers barely more boot space – 390 L compared to 373 L. That’s a difference of about 17 L.

When it comes to payload, the Audi A8 carries substantially more – 700 kg compared to 345 kg. That’s a difference of about 355 kg.

Who wins the race in the data check?

The Audi A8 is clearly superior 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 £91,400
A8

Audi A8

  • Engine Type : Petrol MHEV, Diesel MHEV, Plugin Hybrid
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive
  • Power HP : 286 - 571 HP
  • Consumption L/100km : 4.6 - 11.5 L/100km
  • Electric Range : 58 km
details

Frequently compared as well

Audi A7
Audi A8
VS
The Audi A7 and Audi A8 compete for the top spot in your garage. See how both models differ in key areas like performance, running costs, interior space and technology. A fast, clear comparison helps you pick the one that fits your needs best.
Audi A8
VW Golf
VS
Audi A8 and VW Golf go head-to-head: compare performance, space, features and price in one quick overview to see which model suits your daily driving, budget and lifestyle better. A clear, side-by-side look helps you make the smarter choice.
Audi A8
Porsche 911 Convertible

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Audi A8

The Audi A8 arrives with the kind of quiet authority that makes other limousines feel like they’re trying too hard, offering a cabin wrapped in subtle luxury and tech that never demands attention. For buyers who want composed comfort and discreet status, it’s the sensible splurge that turns daily commutes into a private parade.

details
A220717_overfull
A220719_overfull
A220723_overfull
A220729_overfull
A218438_overfull

Reviews Audi A8

5 (1 Reviews)
rate

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

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.

details
serpimg_JYmvXq

Reviews Porsche 911 Convertible

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

Frequently compared as well

Audi A8
Porsche Cayenne
VS
Audi A8 and Porsche Cayenne go head-to-head: compare performance, space, features and price in one quick overview to see which model suits your daily driving, budget and lifestyle better. A clear, side-by-side look helps you make the smarter choice.
Audi A8
BMW X5
VS
Audi A8 and BMW X5 go head-to-head: compare performance, space, features and price in one quick overview to see which model suits your daily driving, budget and lifestyle better. A clear, side-by-side look helps you make the smarter choice.
Porsche 911 Convertible
Porsche Boxster
VS
Unsure whether the Porsche 911 Convertible or the Porsche Boxster is the better match? Compare both models directly and discover differences in power, efficiency, comfort and value for money — all summarized in one easy view to support your decision.
Audi A3 Limousine
Audi A8
VS
Audi A3 Limousine and Audi A8 go head-to-head: compare performance, space, features and price in one quick overview to see which model suits your daily driving, budget and lifestyle better. A clear, side-by-side look helps you make the smarter choice.
Audi A4 Limousine
Audi A8
VS
The Audi A4 Limousine and Audi A8 compete for the top spot in your garage. See how both models differ in key areas like performance, running costs, interior space and technology. A fast, clear comparison helps you pick the one that fits your needs best.
Mercedes SL Class
Porsche 911 Convertible
VS
Mercedes SL Class and Porsche 911 Convertible go head-to-head: compare performance, space, features and price in one quick overview to see which model suits your daily driving, budget and lifestyle better. A clear, side-by-side look helps you make the smarter choice.
Audi A6 e-tron Sportback
Audi A8
VS
Audi A6 e-tron Sportback and Audi A8 go head-to-head: compare performance, space, features and price in one quick overview to see which model suits your daily driving, budget and lifestyle better. A clear, side-by-side look helps you make the smarter choice.
Audi A8
Honda HR-V
VS
Audi A8 and Honda HR-V go head-to-head: compare performance, space, features and price in one quick overview to see which model suits your daily driving, budget and lifestyle better. A clear, side-by-side look helps you make the smarter choice.
Audi A8
Porsche 911 Convertible

Costs and Consumption
Price
91,400 - 134,900 £
Price
138,000 - 244,500 £
Consumption L/100km
4.6 - 11.5 L/100km
Consumption L/100km
10.5 - 13.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
58 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
105 - 260 g/km
co2
237 - 310 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
Convertible
Seats
5
Seats
2 - 4
Doors
-
Doors
-
Curb weight
2,035 - 2,415 kg
Curb weight
1,572 - 1,900 kg
Trunk capacity
390 L
Trunk capacity
163 - 373 L
Length
-
Length
-
Width
1,945 mm
Width
1,852 - 1,900 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
525 - 700 kg
Payload
195 - 345 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel MHEV, Plugin Hybrid
Engine Type
Petrol, Full Hybrid
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
286 - 571 HP
Power HP
394 - 711 HP
Acceleration 0-100km/h
3.8 - 5.9 s
Acceleration 0-100km/h
2.6 - 4.7 s
Max Speed
-
Max Speed
-
Torque
500 - 800 Nm
Torque
450 - 800 Nm
Number of Cylinders
6 - 8
Number of Cylinders
6
Power kW
210 - 420 kW
Power kW
290 - 523 kW
Engine capacity
2,967 - 3,996 cm3
Engine capacity
2,981 - 3,996 cm3

General
Model Year
2025
Model Year
2,024 - 2,026
CO2 Efficiency Class
G, C
CO2 Efficiency Class
G
Brand
Audi
Brand
Porsche
What drive types are available for the Audi A8?

The Audi A8 is available as 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.