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Porsche Cayman vs Audi A5 Sportback comparison

Compare performance (500 HP vs 639 HP), boot space and price (136,000 £ vs 40,200 £ ) at a glance. Find out which car is the better choice for you – Porsche Cayman or Audi A5 Sportback?

Porsche Cayman vs Audi A5 Sportback: Key differences

Porsche Cayman

  • very slightly quicker 0–100 km/h
  • somewhat lighter
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Audi A5 Sportback

  • significantly cheaper
  • markedly more power
  • significantly more efficient
  • substantially more trunk space
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By Achim Sedelmaier

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

Cayman

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.

Audi A5 Sportback is significantly cheaper – starting at 40,200 £ , while the Porsche Cayman costs 136,000 £ . That’s a price difference of around 95,828 £.

Fuel consumption also shows a difference: the Audi A5 Sportback uses 2 L/100km and is significantly more efficient than the Porsche Cayman with 13 L/100km. The difference is about 11 L/100km.

A5 Sportback

Engine and Performance:

Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.

When it comes to engine power, the Audi A5 Sportback offers markedly more power – delivering 639 HP compared to 500 HP. That’s roughly 139 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche Cayman is very slightly quicker – completing the sprint in 3.4 s, while the Audi A5 Sportback takes 3.7 s. That’s about 0.3 s quicker.

There’s also a difference in torque: the Audi A5 Sportback delivers considerably more torque with 825 Nm compared to 450 Nm. That’s about 375 Nm more.

Space and Everyday Use:

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

Seats: Audi A5 Sportback offers more seats – 5 vs 2.

In terms of curb weight, Porsche Cayman is somewhat lighter – 1,490 kg compared to 1,770 kg. The difference is around 280 kg.

Looking at boot space, the Audi A5 Sportback offers substantially more boot space – 331 L compared to 184 L. That’s a difference of about 147 L.

When it comes to payload, the Audi A5 Sportback carries clearly more – 530 kg compared to 281 kg. That’s a difference of about 249 kg.

Who wins the race in the data check?

The Audi A5 Sportback is clearly superior 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.

from £40,200
A5 Sportback

Audi A5 Sportback

  • Engine Type Plugin Hybrid, Petrol, Diesel MHEV, Petrol MHEV
  • Transmission Automatic
  • Drive Type All-Wheel Drive, Front-Wheel Drive
  • Power HP 150 - 639 HP
  • Consumption L/100km 2 - 7.6 L/100km
  • Electric Range 84 - 110 km
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View detailed analysis

Engine and Performance
View detailed analysis

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View detailed analysis

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.

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Audi A5 Sportback

The Audi A5 Sportback dresses up sleek coupe proportions with the everyday sense of a practical hatchback, so you get striking looks without the compromises. Behind the wheel it balances poise and comfort with premium trimmings that make daily driving feel a little bit special — ideal for buyers who want style and substance in equal measure.

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Porsche Cayman
Audi A5 Sportback

Costs and Consumption
Price
136,000 £
Price
40,200 - 91,000 £
Consumption L/100km
13 L/100km
Consumption L/100km
2 - 7.6 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
84 - 110 km
Battery Capacity
-
Battery Capacity
-
co2
295 g/km
co2
45 - 172 g/km
Fuel tank capacity
54 L
Fuel tank capacity
-

Dimensions and Body
Body Type
Coupe
Body Type
Hatchback
Seats
2
Seats
5
Doors
2
Doors
-
Curb weight
1,490 kg
Curb weight
1,770 - 2,430 kg
Trunk capacity
184 L
Trunk capacity
331 L
Length
4,456 mm
Length
-
Width
1,822 mm
Width
1,860 - 1,952 mm
Height
1,267 mm
Height
-
Max trunk capacity
272 L
Max trunk capacity
-
Payload
281 kg
Payload
475 - 530 kg

Engine and Performance
Engine Type
Petrol
Engine Type
Plugin Hybrid, Petrol, Diesel MHEV, Petrol MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Dual-Clutch Automatic, Automatic Gearbox
Drive Type
Rear-Wheel Drive
Drive Type
All-Wheel Drive, Front-Wheel Drive
Power HP
500 HP
Power HP
150 - 639 HP
Acceleration 0-100km/h
3.4 s
Acceleration 0-100km/h
3.7 - 9.8 s
Max Speed
315 km/h
Max Speed
-
Torque
450 Nm
Torque
280 - 825 Nm
Number of Cylinders
6
Number of Cylinders
4 - 6
Power kW
368 kW
Power kW
110 - 470 kW
Engine capacity
3,996 cm3
Engine capacity
1,968 - 2,995 cm3

General
Model Year
2021
Model Year
2,025 - 2,026
CO2 Efficiency Class
G
CO2 Efficiency Class
B, E, F, D
Brand
Porsche
Brand
Audi
What drivetrain options does the Porsche Cayman have?

The Porsche Cayman is available as Rear-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.