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Audi A8 vs Porsche Cayman comparison

Compare performance (571 HP vs 500 HP), boot space and price (91,400 £ vs 136,000 £ ) at a glance. Find out which car is the better choice for you – Audi A8 or Porsche Cayman?

Audi A8 vs Porsche Cayman: Key differences

Audi A8

5 (1 Reviews)
rate
  • clearly cheaper
  • slightly more power
  • significantly more efficient
  • substantially more trunk space
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Porsche Cayman

  • slightly quicker 0–100 km/h
  • clearly lighter
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By Achim Sedelmaier

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

A8

Costs and Efficiency:

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

Audi A8 is clearly cheaper – starting at 91,400 £ , while the Porsche Cayman costs 136,000 £ . That’s a price difference of around 44,657 £.

Fuel consumption also shows a difference: the Audi A8 uses 4.6 L/100km and is significantly more efficient than the Porsche Cayman with 13 L/100km. The difference is about 8.4 L/100km.

Cayman

Engine and Performance:

Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.

When it comes to engine power, the Audi A8 offers slightly more power – delivering 571 HP compared to 500 HP. That’s roughly 71 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche Cayman is slightly quicker – completing the sprint in 3.4 s, while the Audi A8 takes 3.8 s. That’s about 0.4 s quicker.

There’s also a difference in torque: the Audi A8 delivers considerably more torque with 800 Nm compared to 450 Nm. That’s about 350 Nm more.

A8

Space and Everyday Use:

Whether family car or daily driver – which one offers more room, flexibility and comfort?

Seats: Audi A8 offers more seats – 5 vs 2.

In terms of curb weight, Porsche Cayman is clearly lighter – 1,490 kg compared to 2,035 kg. The difference is around 545 kg.

Looking at boot space, the Audi A8 offers substantially more boot space – 390 L compared to 184 L. That’s a difference of about 206 L.

When it comes to payload, the Audi A8 carries considerably more – 700 kg compared to 281 kg. That’s a difference of about 419 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
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Frequently compared as well

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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.

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Reviews Audi A8

5 (1 Reviews)
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Porsche Cayman

The Porsche Cayman stands out as a quintessential sports car, blending sleek design with dynamic handling. Its mid-engine layout provides an excellent balance and sharp agility that driving enthusiasts crave. Inside, the Cayman offers a refined and driver-focused interior, ensuring that every journey is an exhilarating experience.

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Reviews Porsche Cayman

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Porsche Cayman

Costs and Consumption
Price
91,400 - 134,900 £
Price
136,000 £
Consumption L/100km
4.6 - 11.5 L/100km
Consumption L/100km
13 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
58 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
105 - 260 g/km
co2
295 g/km
Fuel tank capacity
-
Fuel tank capacity
54 L

Dimensions and Body
Body Type
Sedan
Body Type
Coupe
Seats
5
Seats
2
Doors
-
Doors
2
Curb weight
2,035 - 2,415 kg
Curb weight
1,490 kg
Trunk capacity
390 L
Trunk capacity
184 L
Length
-
Length
4,456 mm
Width
1,945 mm
Width
1,822 mm
Height
-
Height
1,267 mm
Max trunk capacity
-
Max trunk capacity
272 L
Payload
525 - 700 kg
Payload
281 kg

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

General
Model Year
2025
Model Year
2021
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.