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Audi A8 vs Porsche Cayenne comparison

Compare performance (571 HP vs 1156 HP), boot space and price (91400 £ vs 87000 £ ) at a glance. Find out which car is the better choice for you – Audi A8 or Porsche Cayenne?

Audi A8 vs Porsche Cayenne: Key differences

Audi A8

5 (1 Reviews)
rate
  • hardly perceptible lighter

Porsche Cayenne

3.3 (2 Reviews)
rate
  • minimal cheaper
  • decisively more power
  • slightly more efficient
  • clearly more electric range
  • convincingly quicker from 0–100 km/h
  • noticeable more trunk space

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.

Porsche Cayenne has a minimal advantage in terms of price – it starts at 87000 £ , while the Audi A8 costs 91400 £ . That’s a price difference of around 4371 £.

Fuel consumption also shows a difference: Porsche Cayenne manages with 4 L and is therefore slightly more efficient than the Audi A8 with 4.60 L. The difference is about 0.60 L per 100 km.

As for electric range, the Porsche Cayenne performs clearly better – achieving up to 642 km, about 584 km more than the Audi A8.

Cayenne

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 Cayenne has a decisively edge – offering 1156 HP compared to 571 HP. That’s roughly 585 HP more horsepower.

In acceleration from 0 to 100 km/h, the Porsche Cayenne is convincingly quicker – completing the sprint in 2.50 s, while the Audi A8 takes 3.80 s. That’s about 1.30 s faster.

In terms of top speed, the Porsche Cayenne performs to a small extent better – reaching 305 km/h, while the Audi A8 tops out at 250 km/h. The difference is around 55 km/h.

There’s also a difference in torque: Porsche Cayenne pulls clearly stronger with 1500 Nm compared to 800 Nm. That’s about 700 Nm difference.

A8

Space and Everyday Use:

Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.

Both vehicles offer seating for 5 people.

In curb weight, Audi A8 is hardly perceptible lighter – 2035 kg compared to 2130 kg. The difference is around 95 kg.

In terms of boot space, the Porsche Cayenne offers noticeable more room – 781 L compared to 505 L. That’s a difference of about 276 L.

When it comes to payload, Porsche Cayenne barely noticeable takes the win – 705 kg compared to 700 kg. That’s a difference of about 5 kg.

Who wins the race in the data check?

The Porsche Cayenne is decisively ahead 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.

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Audi A8
Porsche Cayenne

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £87,000
Cayenne

Porsche Cayenne

  • Engine Type : Petrol, Plugin Hybrid, Electric
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive
  • Power HP : 353 - 1156 HP
  • Consumption L/100km : 4 - 12.2 L
  • Consumption kWh/100km : 19.7 - 20.6 kWh
  • Electric Range : 74 - 642 km
details

Audi A8

5 (1 Reviews)
rate

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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Porsche Cayenne

3.3 (2 Reviews)
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Few SUVs blend athletic poise and Teutonic precision like the Porsche Cayenne, putting genuine sports‑car feeling into a roomy, everyday package. If you want a practical family hauler that still makes you grin every time you merge, the Cayenne delivers — turning errands into an excuse for a spirited drive.

details
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Reviews Audi A8

5 (1 Reviews)
rate

Reviews Porsche Cayenne

3.3 (2 Reviews)
rate
Audi A8
Porsche Cayenne

Costs and Consumption
Price
91400 - 134900 £
Price
87000 - 186400 £
Consumption L/100km
4.6 - 11.5 L
Consumption L/100km
4 - 12.2 L
Consumption kWh/100km
-
Consumption kWh/100km
19.7 - 20.6 kWh
Electric Range
58 km
Electric Range
74 - 642 km
Battery Capacity
-
Battery Capacity
21.80 kWh
co2
105 - 260 g/km
co2
0 - 277 g/km
Fuel tank capacity
82 L
Fuel tank capacity
70 - 90 L

Dimensions and Body
Body Type
Sedan
Body Type
SUV
Seats
5
Seats
4 - 5
Doors
4
Doors
5
Curb weight
2035 - 2415 kg
Curb weight
2130 - 2720 kg
Trunk capacity
390 - 505 L
Trunk capacity
434 - 781 L
Length
5190 - 5320 mm
Length
4930 mm
Width
1945 mm
Width
1980 - 1989 mm
Height
1473 - 1488 mm
Height
1652 - 1698 mm
Max trunk capacity
-
Max trunk capacity
1344 - 1708 L
Payload
525 - 700 kg
Payload
365 - 705 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel MHEV, Plugin Hybrid
Engine Type
Petrol, Plugin Hybrid, Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Automatic Gearbox, Reduction Gearbox
Drive Type
All-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
286 - 571 HP
Power HP
353 - 1156 HP
Acceleration 0-100km/h
3.8 - 5.9 s
Acceleration 0-100km/h
2.5 - 6 s
Max Speed
250 km/h
Max Speed
248 - 305 km/h
Torque
500 - 800 Nm
Torque
500 - 1500 Nm
Number of Cylinders
6 - 8
Number of Cylinders
6 - 8
Power kW
210 - 420 kW
Power kW
260 - 850 kW
Engine capacity
2967 - 3996 cm3
Engine capacity
2995 - 3996 cm3

General
Model Year
2025
Model Year
2025 - 2026
CO2 Efficiency Class
G, C
CO2 Efficiency Class
G, B, C, A
Brand
Audi
Brand
Porsche

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Is the Audi A8 offered with different drivetrains?

The Audi A8 is offered with All-Wheel Drive.

The prices shown are estimates based on German list prices, adjusted for local VAT. Local registration taxes (e.g. NoVA, BPM or CO2 malus) are not included. This information is not legally binding.