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Mercedes AMG GT vs Porsche 911 Convertible comparison

Compare performance (816 HP vs 711 HP), boot space and price (102,500 £ vs 138,000 £ ) at a glance. Find out which car is the better choice for you – Mercedes AMG GT or Porsche 911 Convertible?

Mercedes AMG GT vs Porsche 911 Convertible: Key differences

Mercedes AMG GT

  • markedly cheaper
  • a bit more power
  • very slightly more efficient
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Porsche 911 Convertible

  • only slightly quicker 0–100 km/h
  • slightly lighter
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By Achim Sedelmaier

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

AMG GT

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 AMG GT is markedly cheaper – starting at 102,500 £ , while the Porsche 911 Convertible costs 138,000 £ . That’s a price difference of around 35,496 £.

Fuel consumption also shows a difference: the Mercedes AMG GT uses 10.3 L/100km and is very slightly more efficient than the Porsche 911 Convertible with 10.5 L/100km. The difference is about 0.2 L/100km.

911 Convertible

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 Mercedes AMG GT offers a bit more power – delivering 816 HP compared to 711 HP. That’s roughly 105 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche 911 Convertible is only slightly quicker – completing the sprint in 2.6 s, while the Mercedes AMG GT takes 2.8 s. That’s about 0.2 s quicker.

There’s also a difference in torque: the Mercedes AMG GT delivers significantly more torque with 1,420 Nm compared to 800 Nm. That’s about 620 Nm more.

AMG GT

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: Porsche 911 Convertible offers more seats – 4 vs 2.

In terms of curb weight, Porsche 911 Convertible is slightly lighter – 1,572 kg compared to 1,790 kg. The difference is around 218 kg.

When it comes to payload, the Porsche 911 Convertible carries clearly more – 345 kg compared to 215 kg. That’s a difference of about 130 kg.

Who wins the race in the data check?

The Mercedes AMG GT holds a narrow overall lead 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 £102,500
AMG GT

Mercedes AMG GT

  • Engine Type : Petrol MHEV, Petrol, Plugin Hybrid
  • Transmission : Automatic
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 435 - 816 HP
  • Consumption L/100km : 10.3 - 14 L/100km
  • Electric Range : 11 km
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Porsche 911 Convertible

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes AMG GT

The Mercedes-AMG GT is a theatrical sports car with prowling looks and an aggressive exhaust note that announces its intentions the moment it fires up. It pairs ferocious performance with surprising everyday usability — a taut yet forgiving chassis and a cockpit that feels special — making sensible buyers suddenly very good at justifying indulgence.

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Reviews Mercedes AMG GT

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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.

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Reviews Porsche 911 Convertible

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Porsche 911 Convertible

Costs and Consumption
Price
102,500 - 194,400 £
Price
138,000 - 244,500 £
Consumption L/100km
10.3 - 14 L/100km
Consumption L/100km
10.5 - 13.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
11 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
235 - 319 g/km
co2
237 - 310 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Coupe
Body Type
Convertible
Seats
2
Seats
2 - 4
Doors
-
Doors
-
Curb weight
1,790 - 2,195 kg
Curb weight
1,572 - 1,900 kg
Trunk capacity
-
Trunk capacity
163 - 373 L
Length
-
Length
-
Width
1,929 mm
Width
1,852 - 1,900 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
170 - 215 kg
Payload
195 - 345 kg

Engine and Performance
Engine Type
Petrol MHEV, Petrol, Plugin Hybrid
Engine Type
Petrol, Full Hybrid
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
435 - 816 HP
Power HP
394 - 711 HP
Acceleration 0-100km/h
2.8 - 4.6 s
Acceleration 0-100km/h
2.6 - 4.7 s
Max Speed
-
Max Speed
-
Torque
500 - 1,420 Nm
Torque
450 - 800 Nm
Number of Cylinders
4 - 8
Number of Cylinders
6
Power kW
320 - 600 kW
Power kW
290 - 523 kW
Engine capacity
1,991 - 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
What drive types are available for the Mercedes AMG GT?

Available configurations include Rear-Wheel Drive or 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.