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Mercedes S Class vs Porsche Cayenne comparison

Compare performance (585 HP vs 1156 HP), boot space and price (104000 £ vs 87000 £ ) at a glance. Find out which car is the better choice for you – Mercedes S Class or Porsche Cayenne?

Mercedes S Class vs Porsche Cayenne: Key differences

Mercedes S Class

  • clearly more efficient

Porsche Cayenne

3.3 (2 Reviews)
rate
  • somewhat cheaper
  • decisively more power
  • convincingly more electric range
  • convincingly quicker from 0–100 km/h
  • minimal lighter

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

S Class

Costs and Efficiency:

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

Porsche Cayenne has a somewhat advantage in terms of price – it starts at 87000 £ , while the Mercedes S Class costs 104000 £ . That’s a price difference of around 17019 £.

Fuel consumption also shows a difference: Mercedes S Class manages with 2.20 L and is therefore clearly more efficient than the Porsche Cayenne with 4 L. The difference is about 1.80 L per 100 km.

As for electric range, the Porsche Cayenne performs convincingly better – achieving up to 642 km, about 524 km more than the Mercedes S Class.

Cayenne

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 Porsche Cayenne has a decisively edge – offering 1156 HP compared to 585 HP. That’s roughly 571 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 Mercedes S Class takes 4 s. That’s about 1.50 s faster.

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.

S Class

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, Porsche Cayenne is minimal lighter – 2130 kg compared to 2165 kg. The difference is around 35 kg.

When it comes to payload, Porsche Cayenne hardly perceptible takes the win – 705 kg compared to 660 kg. That’s a difference of about 45 kg.

Who wins the race in the data check?

The Porsche Cayenne 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.

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Mercedes S Class
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

Mercedes S Class

The Mercedes S-Class wraps peerless comfort, whisper-quiet luxury and subtle tech wizardry into a chauffeur-ready package that still knows how to engage the driver. It’s the car for buyers who want to arrive relaxed, be taken seriously and occasionally enjoy a grin when the road reminds them this limousine can dance.

details
21C0428_003
21C0428_004
21C0613_021
21C0613_037
21C0613_042
21C0613_043

Porsche Cayenne

3.3 (2 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.

details
P17_0701
P17_0780
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P17_0784

Reviews Mercedes S Class

Reviews Porsche Cayenne

3.3 (2 Reviews)
rate
Mercedes S Class
Porsche Cayenne

Costs and Consumption
Price
104000 - 139100 £
Price
87000 - 186400 £
Consumption L/100km
2.2 - 10.6 L
Consumption L/100km
4 - 12.2 L
Consumption kWh/100km
-
Consumption kWh/100km
19.7 - 20.6 kWh
Electric Range
102 - 118 km
Electric Range
74 - 642 km
Battery Capacity
-
Battery Capacity
21.80 kWh
co2
50 - 241 g/km
co2
0 - 277 g/km
Fuel tank capacity
-
Fuel tank capacity
70 - 90 L

Dimensions and Body
Body Type
Sedan
Body Type
SUV
Seats
5
Seats
4 - 5
Doors
-
Doors
5
Curb weight
2165 - 2515 kg
Curb weight
2130 - 2720 kg
Trunk capacity
-
Trunk capacity
434 - 781 L
Length
-
Length
4930 mm
Width
1921 mm
Width
1980 - 1989 mm
Height
-
Height
1652 - 1698 mm
Max trunk capacity
-
Max trunk capacity
1344 - 1708 L
Payload
555 - 660 kg
Payload
365 - 705 kg

Engine and Performance
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel MHEV
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
336 - 585 HP
Power HP
353 - 1156 HP
Acceleration 0-100km/h
4 - 5.7 s
Acceleration 0-100km/h
2.5 - 6 s
Max Speed
-
Max Speed
248 - 305 km/h
Torque
560 - 750 Nm
Torque
500 - 1500 Nm
Number of Cylinders
6 - 8
Number of Cylinders
6 - 8
Power kW
247 - 430 kW
Power kW
260 - 850 kW
Engine capacity
2989 - 3982 cm3
Engine capacity
2995 - 3996 cm3

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

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What drive types are available for the Mercedes S Class?

The Mercedes S Class is available as 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.