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Mercedes GLS vs Porsche Cayenne comparison

Compare performance (634 HP vs 1,156 HP), boot space and price (191,300 £ vs 90,200 £ ) at a glance. Find out which car is the better choice for you – Mercedes GLS or Porsche Cayenne?

Mercedes GLS vs Porsche Cayenne: Key differences

Mercedes GLS

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Porsche Cayenne

3.3 (2 Reviews)
rate
  • clearly cheaper
  • clearly more power
  • substantially more efficient
  • substantially quicker 0–100 km/h
  • noticeably lighter
  • substantially more trunk space
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By Achim Sedelmaier

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

GLS

Costs and Efficiency:

Price and efficiency are often the first things buyers look at. Here it becomes clear which model has the long-term edge – whether at the pump, the plug, or in purchase price.

Porsche Cayenne is clearly cheaper – starting at 90,200 £ , while the Mercedes GLS costs 191,300 £ . That’s a price difference of around 101,089 £.

Fuel consumption also shows a difference: the Porsche Cayenne uses 4 L/100km and is substantially more efficient than the Mercedes GLS with 13.3 L/100km. The difference is about 9.3 L/100km.

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 offers clearly more power – delivering 1,156 HP compared to 634 HP. That’s roughly 522 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche Cayenne is substantially quicker – completing the sprint in 2.5 s, while the Mercedes GLS takes 4.2 s. That’s about 1.7 s quicker.

There’s also a difference in torque: the Porsche Cayenne delivers clearly more torque with 1,500 Nm compared to 850 Nm. That’s about 650 Nm more.

GLS

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: Mercedes GLS offers more seats – 7 vs 5.

In terms of curb weight, Porsche Cayenne is noticeably lighter – 2,130 kg compared to 2,700 kg. The difference is around 570 kg.

Looking at boot space, the Porsche Cayenne offers substantially more boot space – 781 L compared to 355 L. That’s a difference of about 426 L.

When it comes to payload, the Porsche Cayenne carries very slightly more – 705 kg compared to 695 kg. That’s a difference of about 10 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.

from £90,200
Cayenne

Porsche Cayenne

  • Engine Type : Petrol, Plugin Hybrid, Electric
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive
  • Power HP : 353 - 1,156 HP
  • Consumption L/100km : 4 - 11 L/100km
  • Consumption kWh/100km : 18.9 - 20.6 kWh/100km
  • Electric Range : 74 - 668 km
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Mercedes GLS
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes GLS

The GLS — usually just called the GLS — is Mercedes' flagship SUV, wrapping limousine-like comfort and commanding road presence into a smart, family-ready package. It pampers occupants with a hushed cabin, premium materials and intuitive tech, while still managing to feel confident and a little indulgent on the daily commute.

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19C0481_004
19C0481_007
19C0483_036
19C0480_047
18C1072_111

Reviews Mercedes GLS

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Porsche Cayenne

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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P17_0701
P17_0780
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Reviews Porsche Cayenne

3.3 (2 Reviews)
rate

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Mercedes GLS
Porsche Cayenne

Costs and Consumption
Price
191,300 £
Price
90,200 - 144,400 £
Consumption L/100km
13.3 L/100km
Consumption L/100km
4 - 11 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
18.9 - 20.6 kWh/100km
Electric Range
-
Electric Range
74 - 668 km
Battery Capacity
-
Battery Capacity
-
co2
302 g/km
co2
0 - 249 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
7
Seats
4 - 5
Doors
-
Doors
-
Curb weight
2,700 kg
Curb weight
2,130 - 2,725 kg
Trunk capacity
355 L
Trunk capacity
434 - 781 L
Length
-
Length
-
Width
1,956 mm
Width
1,980 - 1,983 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
695 kg
Payload
525 - 705 kg

Engine and Performance
Engine Type
Petrol 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
Drive Type
All-Wheel Drive
Power HP
634 HP
Power HP
353 - 1,156 HP
Acceleration 0-100km/h
4.2 s
Acceleration 0-100km/h
2.5 - 6 s
Max Speed
-
Max Speed
-
Torque
850 Nm
Torque
500 - 1,500 Nm
Number of Cylinders
8
Number of Cylinders
6
Power kW
466 kW
Power kW
260 - 850 kW
Engine capacity
3,982 cm3
Engine capacity
2,995 cm3

General
Model Year
2025
Model Year
2,025 - 2,026
CO2 Efficiency Class
G
CO2 Efficiency Class
G, B, A
Brand
Mercedes-Benz
Brand
Porsche
Is the Mercedes GLS offered with different drivetrains?

The Mercedes GLS 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.