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BMW 8 Series Coupé vs Porsche Cayenne - Differences and prices compared

Compare performance (625 HP vs 1156 HP), boot space and price (90000 £ vs 87000 £ ) at a glance. Find out which car is the better choice for you – BMW 8 Series Coupé or Porsche Cayenne?

BMW 8 Series Coupé

Porsche Cayenne

1.9 (1 Reviews)
rate

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

8 Series Coupé

Costs and Efficiency:

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

Porsche Cayenne has a minimal advantage in terms of price – it starts at 87000 £ , while the BMW 8 Series Coupé costs 90000 £ . That’s a price difference of around 3000 £.

Fuel consumption also shows a difference: Porsche Cayenne manages with 4 L and is therefore decisively more efficient than the BMW 8 Series Coupé with 6.70 L. The difference is about 2.70 L per 100 km.

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 significantly edge – offering 1156 HP compared to 625 HP. That’s roughly 531 HP more horsepower.

In acceleration from 0 to 100 km/h, the Porsche Cayenne is clearly perceptible quicker – completing the sprint in 2.50 s, while the BMW 8 Series Coupé takes 3.20 s. That’s about 0.70 s faster.

In terms of top speed, the Porsche Cayenne performs slightly better – reaching 305 km/h, while the BMW 8 Series Coupé tops out at 250 km/h. The difference is around 55 km/h.

There’s also a difference in torque: Porsche Cayenne pulls convincingly stronger with 1500 Nm compared to 750 Nm. That’s about 750 Nm difference.

8 Series Coupé

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, BMW 8 Series Coupé is somewhat lighter – 1805 kg compared to 2130 kg. The difference is around 325 kg.

In terms of boot space, the Porsche Cayenne offers decisively more room – 781 L compared to 440 L. That’s a difference of about 341 L.

When it comes to payload, Porsche Cayenne noticeable takes the win – 705 kg compared to 545 kg. That’s a difference of about 160 kg.

Who wins the race in the data check?

The Porsche Cayenne sits 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.

BMW 8 Series Coupé
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

BMW 8 Series Coupé

The BMW 8 Series Coupé blends elegant, low-slung coupé looks with a purposeful, athletic stance that hints at both comfort and serious driving fun. Inside it feels indulgent and driver-focused, the sort of car that turns motorway miles into a breeze while quietly daring you to chase a twisty back road — and yes, it photographs magnificently.

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Porsche Cayenne

1.9 (1 Reviews)
rate

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.

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Reviews BMW 8 Series Coupé

Reviews Porsche Cayenne

1.9 (1 Reviews)
rate

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BMW 8 Series Coupé
Porsche Cayenne

Costs and Consumption
Price
90000 - 158900 £
Price
87000 - 186400 £
Consumption L/100km
6.7 - 11.5 L
Consumption L/100km
4 - 12.2 L
Consumption kWh/100km
-
Consumption kWh/100km
19.7 - 20.6 kWh
Electric Range
-
Electric Range
74 - 642 km
Battery Capacity
-
Battery Capacity
21.80 kWh
co2
176 - 263 g/km
co2
0 - 277 g/km
Fuel tank capacity
66 - 68 L
Fuel tank capacity
70 - 90 L

Dimensions and Body
Body Type
Coupe
Body Type
SUV
Seats
4 - 5
Seats
4 - 5
Doors
2 - 4
Doors
5
Curb weight
1805 - 2085 kg
Curb weight
2130 - 2720 kg
Trunk capacity
420 - 440 L
Trunk capacity
434 - 781 L
Length
4851 - 5098 mm
Length
4930 mm
Width
1902 - 1943 mm
Width
1980 - 1989 mm
Height
1346 - 1420 mm
Height
1652 - 1698 mm
Max trunk capacity
-
Max trunk capacity
1344 - 1708 L
Payload
370 - 545 kg
Payload
365 - 705 kg

Engine and Performance
Engine Type
Diesel MHEV, Petrol
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, Rear-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
333 - 625 HP
Power HP
353 - 1156 HP
Acceleration 0-100km/h
3.2 - 5.4 s
Acceleration 0-100km/h
2.5 - 6 s
Max Speed
250 km/h
Max Speed
248 - 305 km/h
Torque
500 - 750 Nm
Torque
500 - 1500 Nm
Number of Cylinders
6 - 8
Number of Cylinders
6 - 8
Power kW
245 - 460 kW
Power kW
260 - 850 kW
Engine capacity
2993 - 4395 cm3
Engine capacity
2995 - 3996 cm3

General
Model Year
2024
Model Year
2025 - 2026
CO2 Efficiency Class
G
CO2 Efficiency Class
G, B, C, A
Brand
BMW
Brand
Porsche

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Is the BMW 8 Series Coupé offered with different drivetrains?

Available configurations include All-Wheel Drive or Rear-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.