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Mercedes GLS vs Porsche Boxster comparison

Compare performance (404 HP vs 500 HP), boot space and price (92,700 £ vs 136,000 £ ) at a glance. Find out which car is the better choice for you – Mercedes GLS or Porsche Boxster?

Mercedes GLS vs Porsche Boxster: Key differences

Mercedes GLS

  • clearly cheaper
  • significantly more efficient
  • clearly more trunk space
details

Porsche Boxster

  • a bit more power
  • substantially quicker 0–100 km/h
  • considerably lighter
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By Achim Sedelmaier

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

GLS

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.

Mercedes GLS is clearly cheaper – starting at 92,700 £ , while the Porsche Boxster costs 136,000 £ . That’s a price difference of around 43,366 £.

Fuel consumption also shows a difference: the Mercedes GLS uses 7.9 L/100km and is significantly more efficient than the Porsche Boxster with 12.7 L/100km. The difference is about 4.8 L/100km.

Boxster

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 Boxster offers a bit more power – delivering 500 HP compared to 404 HP. That’s roughly 96 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche Boxster is substantially quicker – completing the sprint in 3.4 s, while the Mercedes GLS takes 5.6 s. That’s about 2.2 s quicker.

There’s also a difference in torque: the Mercedes GLS delivers markedly more torque with 750 Nm compared to 450 Nm. That’s about 300 Nm more.

GLS

Space and Everyday Use:

Whether family car or daily driver – which one offers more room, flexibility and comfort?

Seats: Mercedes GLS offers more seats – 7 vs 2.

In terms of curb weight, Porsche Boxster is considerably lighter – 1,485 kg compared to 2,580 kg. The difference is around 1,095 kg.

Looking at boot space, the Mercedes GLS offers clearly more boot space – 355 L compared to 122 L. That’s a difference of about 233 L.

When it comes to payload, the Mercedes GLS carries considerably more – 820 kg compared to 270 kg. That’s a difference of about 550 kg.

Who wins the race in the data check?

The Mercedes GLS 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 £92,700
GLS

Mercedes GLS

  • Engine Type Petrol MHEV, Diesel MHEV
  • Transmission Automatic
  • Drive Type All-Wheel Drive
  • Power HP 336 - 404 HP
  • Consumption L/100km 7.9 - 9.9 L/100km
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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 Boxster

The Porsche Boxster epitomizes the essence of a pure, open-top driving experience with its mid-engine roadster design. Known for its agile handling and dynamic performance, the Boxster seamlessly blends luxury with thrilling precision on the road. Its unmistakable styling and superior engineering continue to captivate automotive enthusiasts who crave a visceral connection to the art of driving.

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Reviews Porsche Boxster

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Porsche Boxster

Costs and Consumption
Price
92,700 - 104,600 £
Price
136,000 £
Consumption L/100km
7.9 - 9.9 L/100km
Consumption L/100km
12.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
206 - 226 g/km
co2
288 g/km
Fuel tank capacity
-
Fuel tank capacity
54 L

Dimensions and Body
Body Type
SUV
Body Type
Roadster
Seats
7
Seats
2
Doors
-
Doors
2
Curb weight
2,580 - 2,670 kg
Curb weight
1,485 kg
Trunk capacity
355 L
Trunk capacity
122 L
Length
-
Length
4,418 mm
Width
1,956 mm
Width
1,822 mm
Height
-
Height
1,252 mm
Max trunk capacity
-
Max trunk capacity
-
Payload
810 - 820 kg
Payload
270 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel MHEV
Engine Type
Petrol
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
All-Wheel Drive
Drive Type
Rear-Wheel Drive
Power HP
336 - 404 HP
Power HP
500 HP
Acceleration 0-100km/h
5.6 - 6.2 s
Acceleration 0-100km/h
3.4 s
Max Speed
-
Max Speed
308 km/h
Torque
560 - 750 Nm
Torque
450 Nm
Number of Cylinders
6
Number of Cylinders
6
Power kW
247 - 297 kW
Power kW
368 kW
Engine capacity
2,989 - 2,999 cm3
Engine capacity
3,996 cm3

General
Model Year
2026
Model Year
2023
CO2 Efficiency Class
G
CO2 Efficiency Class
G
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.