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Mercedes AMG GT vs Porsche Cayman - Differences and prices compared
Compare performance (816 HP vs 500 HP), boot space and price (102500 £ vs 136000 £ ) at a glance. Find out which car is the better choice for you – Mercedes AMG GT or Porsche Cayman?
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 has a evident advantage in terms of price – it starts at 102500 £ , while the Porsche Cayman costs 136000 £ . That’s a price difference of around 33524 £.
Fuel consumption also shows a difference: Mercedes AMG GT manages with 10.30 L and is therefore evident more efficient than the Porsche Cayman with 13 L. The difference is about 2.70 L per 100 km.
AMG GT
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 Mercedes AMG GT has a distinct edge – offering 816 HP compared to 500 HP. That’s roughly 316 HP more horsepower.
In acceleration from 0 to 100 km/h, the Mercedes AMG GT is evident quicker – completing the sprint in 2.80 s, while the Porsche Cayman takes 3.40 s. That’s about 0.60 s faster.
In terms of top speed, the Mercedes AMG GT performs hardly perceptible better – reaching 320 km/h, while the Porsche Cayman tops out at 315 km/h. The difference is around 5 km/h.
There’s also a difference in torque: Mercedes AMG GT pulls convincingly stronger with 1420 Nm compared to 450 Nm. That’s about 970 Nm difference.
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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.
Both vehicles offer seating for 2 people.
In curb weight, Porsche Cayman is distinct lighter – 1490 kg compared to 1790 kg. The difference is around 300 kg.
In terms of boot space, the Mercedes AMG GT offers clearly more room – 321 L compared to 184 L. That’s a difference of about 137 L.
When it comes to payload, Porsche Cayman distinct takes the win – 281 kg compared to 215 kg. That’s a difference of about 66 kg.
Who wins the race in the data check?
The Mercedes AMG GT is far ahead 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.
Mercedes AMG GT
Porsche Cayman
Costs and Consumption
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Engine and Performance
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Dimensions and Body
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from about £102,500
Mercedes AMG GT
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.
details
Porsche Cayman
The Porsche Cayman stands out as a quintessential sports car, blending sleek design with dynamic handling. Its mid-engine layout provides an excellent balance and sharp agility that driving enthusiasts crave. Inside, the Cayman offers a refined and driver-focused interior, ensuring that every journey is an exhilarating experience.
details
Mercedes AMG GT
Porsche Cayman
Costs and Consumption |
|
|---|---|
|
Price
102500 - 194400 £
|
Price
136000 £
|
|
Consumption L/100km
10.3 - 14 L
|
Consumption L/100km
13 L
|
|
Consumption kWh/100km
-
|
Consumption kWh/100km
-
|
|
Electric Range
11 km
|
Electric Range
-
|
|
Battery Capacity
-
|
Battery Capacity
-
|
|
co2
235 - 319 g/km
|
co2
295 g/km
|
|
Fuel tank capacity
70 L
|
Fuel tank capacity
54 L
|
Dimensions and Body |
|
|---|---|
|
Body Type
Coupe
|
Body Type
Coupe
|
|
Seats
2
|
Seats
2
|
|
Doors
2
|
Doors
2
|
|
Curb weight
1790 - 2195 kg
|
Curb weight
1490 kg
|
|
Trunk capacity
182 - 321 L
|
Trunk capacity
184 L
|
|
Length
4728 mm
|
Length
4456 mm
|
|
Width
1929 mm
|
Width
1822 mm
|
|
Height
1354 - 1359 mm
|
Height
1267 mm
|
|
Max trunk capacity
-
|
Max trunk capacity
272 L
|
|
Payload
170 - 215 kg
|
Payload
281 kg
|
Engine and Performance |
|
|---|---|
|
Engine Type
Petrol MHEV, Petrol, Plugin Hybrid
|
Engine Type
Petrol
|
|
Transmission
Automatic
|
Transmission
Automatic
|
|
Transmission Detail
Automatic Gearbox
|
Transmission Detail
Dual-Clutch Automatic
|
|
Drive Type
Rear-Wheel Drive, All-Wheel Drive
|
Drive Type
Rear-Wheel Drive
|
|
Power HP
435 - 816 HP
|
Power HP
500 HP
|
|
Acceleration 0-100km/h
2.8 - 4.6 s
|
Acceleration 0-100km/h
3.40 s
|
|
Max Speed
280 - 320 km/h
|
Max Speed
315 km/h
|
|
Torque
500 - 1420 Nm
|
Torque
450 Nm
|
|
Number of Cylinders
4 - 8
|
Number of Cylinders
6
|
|
Power kW
320 - 600 kW
|
Power kW
368 kW
|
|
Engine capacity
1991 - 3982 cm3
|
Engine capacity
3996 cm3
|
General |
|
|---|---|
|
Model Year
2025
|
Model Year
2021
|
|
CO2 Efficiency Class
G
|
CO2 Efficiency Class
G
|
|
Brand
Mercedes-Benz
|
Brand
Porsche
|
Is the Mercedes AMG GT offered with different drivetrains?
The Mercedes AMG GT is available as Rear-Wheel Drive or All-Wheel Drive.
The prices shown are estimates based on German list prices, adjusted for local VAT. Local registration taxes (e.g. NoVA, BPM or CO2 malus) are not included. This information is not legally binding.