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Mercedes GLS vs Porsche Panamera comparison

Compare performance (404 HP vs 782 HP), boot space and price (92,700 £ vs 99,800 £ ) at a glance. Find out which car is the better choice for you – Mercedes GLS or Porsche Panamera?

Mercedes GLS vs Porsche Panamera: Key differences

Mercedes GLS

  • marginally cheaper
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Porsche Panamera

  • substantially more power
  • clearly more efficient
  • substantially quicker 0–100 km/h
  • clearly lighter
  • markedly 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.

Mercedes GLS is marginally cheaper – starting at 92,700 £ , while the Porsche Panamera costs 99,800 £ . That’s a price difference of around 7,109 £.

Fuel consumption also shows a difference: the Porsche Panamera uses 3 L/100km and is clearly more efficient than the Mercedes GLS with 7.9 L/100km. The difference is about 4.9 L/100km.

Panamera

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 Panamera offers substantially more power – delivering 782 HP compared to 404 HP. That’s roughly 378 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche Panamera is substantially quicker – completing the sprint in 2.9 s, while the Mercedes GLS takes 5.6 s. That’s about 2.7 s quicker.

There’s also a difference in torque: the Porsche Panamera delivers clearly more torque with 1,000 Nm compared to 750 Nm. That’s about 250 Nm more.

GLS

Space and Everyday Use:

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

Seats: Mercedes GLS offers more seats – 7 vs 4.

In terms of curb weight, Porsche Panamera is clearly lighter – 1,960 kg compared to 2,580 kg. The difference is around 620 kg.

Looking at boot space, the Porsche Panamera offers markedly more boot space – 494 L compared to 355 L. That’s a difference of about 139 L.

When it comes to payload, the Mercedes GLS carries markedly more – 820 kg compared to 545 kg. That’s a difference of about 275 kg.

Who wins the race in the data check?

The Porsche Panamera stands 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.

from £99,800
Panamera

Porsche Panamera

  • Engine Type Petrol, Plugin Hybrid
  • Transmission Automatic
  • Drive Type Rear-Wheel Drive, All-Wheel Drive
  • Power HP 353 - 782 HP
  • Consumption L/100km 3 - 12 L/100km
  • Electric Range 83 - 97 km
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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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Reviews Mercedes GLS

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Porsche Panamera

The Porsche Panamera blends sports-car sharpness with luxury-sedan refinement, serving driving thrills up front while pampering passengers in the back. Poised, polished and mischievously quick, it’s the car for buyers who want exotic performance without losing everyday comfort.

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Reviews Porsche Panamera

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Porsche Panamera

Costs and Consumption
Price
92,700 - 104,600 £
Price
99,800 - 212,100 £
Consumption L/100km
7.9 - 9.9 L/100km
Consumption L/100km
3 - 12 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
83 - 97 km
Battery Capacity
-
Battery Capacity
21.8 kWh
co2
206 - 226 g/km
co2
69 - 274 g/km
Fuel tank capacity
-
Fuel tank capacity
75 - 90 L

Dimensions and Body
Body Type
SUV
Body Type
Hatchback
Seats
7
Seats
4
Doors
-
Doors
5
Curb weight
2,580 - 2,670 kg
Curb weight
1,960 - 2,535 kg
Trunk capacity
355 L
Trunk capacity
421 - 494 L
Length
-
Length
5,052 - 5,204 mm
Width
1,956 mm
Width
1,937 mm
Height
-
Height
1,415 - 1,428 mm
Max trunk capacity
-
Max trunk capacity
1,255 - 1,385 L
Payload
810 - 820 kg
Payload
340 - 545 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel MHEV
Engine Type
Petrol, Plugin Hybrid
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
336 - 404 HP
Power HP
353 - 782 HP
Acceleration 0-100km/h
5.6 - 6.2 s
Acceleration 0-100km/h
2.9 - 5.3 s
Max Speed
-
Max Speed
270 - 325 km/h
Torque
560 - 750 Nm
Torque
500 - 1,000 Nm
Number of Cylinders
6
Number of Cylinders
6 - 8
Power kW
247 - 297 kW
Power kW
260 - 575 kW
Engine capacity
2,989 - 2,999 cm3
Engine capacity
2,894 - 3,996 cm3

General
Model Year
2026
Model Year
2025
CO2 Efficiency Class
G
CO2 Efficiency Class
G, B, C
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.