VS

Mercedes GLS vs Porsche 911 Convertible comparison

Compare performance (634 HP vs 711 HP), boot space and price (191,300 £ vs 138,000 £ ) at a glance. Find out which car is the better choice for you – Mercedes GLS or Porsche 911 Convertible?

Mercedes GLS vs Porsche 911 Convertible: Key differences

Mercedes GLS

details

Porsche 911 Convertible

  • noticeably cheaper
  • moderately more power
  • noticeably more efficient
  • considerably quicker 0–100 km/h
  • substantially lighter
  • barely more trunk space
details

By Achim Sedelmaier

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

GLS

Costs and Efficiency:

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

Porsche 911 Convertible is noticeably cheaper – starting at 138,000 £ , while the Mercedes GLS costs 191,300 £ . That’s a price difference of around 53,260 £.

Fuel consumption also shows a difference: the Porsche 911 Convertible uses 10.5 L/100km and is noticeably more efficient than the Mercedes GLS with 13.3 L/100km. The difference is about 2.8 L/100km.

911 Convertible

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 911 Convertible offers moderately more power – delivering 711 HP compared to 634 HP. That’s roughly 77 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche 911 Convertible is considerably quicker – completing the sprint in 2.6 s, while the Mercedes GLS takes 4.2 s. That’s about 1.6 s quicker.

There’s also a difference in torque: the Mercedes GLS delivers marginally more torque with 850 Nm compared to 800 Nm. That’s about 50 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 4.

In terms of curb weight, Porsche 911 Convertible is substantially lighter – 1,572 kg compared to 2,700 kg. The difference is around 1,128 kg.

Looking at boot space, the Porsche 911 Convertible offers barely more boot space – 373 L compared to 355 L. That’s a difference of about 18 L.

When it comes to payload, the Mercedes GLS carries substantially more – 695 kg compared to 345 kg. That’s a difference of about 350 kg.

Who wins the race in the data check?

The Porsche 911 Convertible is decisively ahead 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 £138,000
911 Convertible

Porsche 911 Convertible

  • Engine Type : Petrol, Full Hybrid
  • Transmission : Manuel, Automatic
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 394 - 711 HP
  • Consumption L/100km : 10.5 - 13.7 L/100km
details

Frequently compared as well

Mercedes GLS
Land Rover Defender
VS
Mercedes GLS and Land Rover Defender go head-to-head: compare performance, space, features and price in one quick overview to see which model suits your daily driving, budget and lifestyle better. A clear, side-by-side look helps you make the smarter choice.
Mercedes GLS
Mercedes S Class
VS
Unsure whether the Mercedes GLS or the Mercedes S Class is the better match? Compare both models directly and discover differences in power, efficiency, comfort and value for money — all summarized in one easy view to support your decision.
Mercedes GLS
Porsche 911 Convertible

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.

details
19C0481_004
19C0481_007
19C0483_036
19C0480_047
18C1072_111

Reviews Mercedes GLS

No reviews yet. Share your experience and help others decide.

Porsche 911 Convertible

The Porsche 911 Cabriolet transforms the iconic silhouette into an open‑air weapon, offering roof-down glamour and razor-sharp handling that still feels perfectly composed on normal roads. It’s the kind of car that serves daily duties with surprising ease while delivering intoxicating engine music and a grin factor that makes every trip feel like a small victory.

details
serpimg_JYmvXq

Reviews Porsche 911 Convertible

No reviews yet. Share your experience and help others decide.

Frequently compared as well

Honda HR-V
Mercedes GLS
VS
The Honda HR-V and Mercedes GLS compete for the top spot in your garage. See how both models differ in key areas like performance, running costs, interior space and technology. A fast, clear comparison helps you pick the one that fits your needs best.
Mercedes GLE
Mercedes GLS
VS
In the realm of luxury SUVs, the Mercedes GLE and the larger Mercedes GLS offer elegance with their distinct features and capabilities. The GLE is renowned for its agile handling and impressive technology suite, making it ideal for those who seek a balanced blend of performance and comfort. …
BMW X7
Mercedes GLS
VS
In the luxury SUV showdown between the BMW X7 and the Mercedes GLS, both models showcase impressive designs and advanced technology that appeal to discerning buyers. The BMW X7 offers a sportier driving experience with its dynamic handling, while the Mercedes GLS emphasizes comfort with its vast …
Ford Explorer EV
Mercedes GLS
VS
The Ford Explorer EV and Mercedes GLS compete for the top spot in your garage. See how both models differ in key areas like performance, running costs, interior space and technology. A fast, clear comparison helps you pick the one that fits your needs best.
Mercedes GLS
Toyota Land Cruiser
VS
Unsure whether the Mercedes GLS or the Toyota Land Cruiser is the better match? Compare both models directly and discover differences in power, efficiency, comfort and value for money — all summarized in one easy view to support your decision.
Mercedes GLS
Land Rover Discovery
VS
The Mercedes GLS and Land Rover Discovery compete for the top spot in your garage. See how both models differ in key areas like performance, running costs, interior space and technology. A fast, clear comparison helps you pick the one that fits your needs best.
Mercedes GLS
Bentley Bentayga
VS
Mercedes GLS and Bentley Bentayga go head-to-head: compare performance, space, features and price in one quick overview to see which model suits your daily driving, budget and lifestyle better. A clear, side-by-side look helps you make the smarter choice.
Mercedes GLS
VW Tayron
VS
The Mercedes GLS and VW Tayron compete for the top spot in your garage. See how both models differ in key areas like performance, running costs, interior space and technology. A fast, clear comparison helps you pick the one that fits your needs best.
Mercedes GLS
Porsche 911 Convertible

Costs and Consumption
Price
191,300 £
Price
138,000 - 244,500 £
Consumption L/100km
13.3 L/100km
Consumption L/100km
10.5 - 13.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
302 g/km
co2
237 - 310 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
Convertible
Seats
7
Seats
2 - 4
Doors
-
Doors
-
Curb weight
2,700 kg
Curb weight
1,572 - 1,900 kg
Trunk capacity
355 L
Trunk capacity
163 - 373 L
Length
-
Length
-
Width
1,956 mm
Width
1,852 - 1,900 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
695 kg
Payload
195 - 345 kg

Engine and Performance
Engine Type
Petrol MHEV
Engine Type
Petrol, Full Hybrid
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
634 HP
Power HP
394 - 711 HP
Acceleration 0-100km/h
4.2 s
Acceleration 0-100km/h
2.6 - 4.7 s
Max Speed
-
Max Speed
-
Torque
850 Nm
Torque
450 - 800 Nm
Number of Cylinders
8
Number of Cylinders
6
Power kW
466 kW
Power kW
290 - 523 kW
Engine capacity
3,982 cm3
Engine capacity
2,981 - 3,996 cm3

General
Model Year
2025
Model Year
2,024 - 2,026
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.