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Mercedes A Class vs Porsche Cayman comparison

Compare performance (421 HP vs 500 HP), boot space and price (32,600 £ vs 136,000 £ ) at a glance. Find out which car is the better choice for you – Mercedes A Class or Porsche Cayman?

Mercedes A Class vs Porsche Cayman: Key differences

Mercedes A Class

2.7 (1 Reviews)
rate
  • considerably cheaper
  • substantially more efficient
  • marginally lighter
  • significantly more trunk space
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Porsche Cayman

  • a bit more power
  • moderately quicker 0–100 km/h
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By Achim Sedelmaier

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

A Class

Costs and Efficiency:

Price and efficiency are often the first things buyers look at. Here it becomes clear which model has the long-term edge – whether at the pump, the plug, or in purchase price.

Mercedes A Class is considerably cheaper – starting at 32,600 £ , while the Porsche Cayman costs 136,000 £ . That’s a price difference of around 103,460 £.

Fuel consumption also shows a difference: the Mercedes A Class uses 2.3 L/100km and is substantially more efficient than the Porsche Cayman with 13 L/100km. The difference is about 10.7 L/100km.

Cayman

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 Cayman offers a bit more power – delivering 500 HP compared to 421 HP. That’s roughly 79 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche Cayman is moderately quicker – completing the sprint in 3.4 s, while the Mercedes A Class takes 3.9 s. That’s about 0.5 s quicker.

There’s also a difference in torque: the Mercedes A Class delivers marginally more torque with 500 Nm compared to 450 Nm. That’s about 50 Nm more.

A Class

Space and Everyday Use:

Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.

Seats: Mercedes A Class offers more seats – 5 vs 2.

In terms of curb weight, Mercedes A Class is marginally lighter – 1,440 kg compared to 1,490 kg. The difference is around 50 kg.

Looking at boot space, the Mercedes A Class offers significantly more boot space – 350 L compared to 184 L. That’s a difference of about 166 L.

When it comes to payload, the Mercedes A Class carries considerably more – 485 kg compared to 281 kg. That’s a difference of about 204 kg.

Who wins the race in the data check?

The Mercedes A Class holds a decisive 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 £32,600
A Class

Mercedes A Class

  • Engine Type Petrol MHEV, Diesel, Plugin Hybrid, Petrol
  • Transmission Automatic
  • Drive Type Front-Wheel Drive, All-Wheel Drive
  • Power HP 116 - 421 HP
  • Consumption L/100km 2.3 - 9 L/100km
  • Electric Range 85 km
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Frequently compared as well

Mercedes A Class
Mercedes B Class
VS
The Mercedes A‑Class is the sporty, tech‑savvy compact that thrills with sharp handling and a slick cockpit, while the Mercedes B‑Class trades a bit of attitude for towering practicality, roomier seats and a more useful boot. Choose the A‑Class if you want driving fun and style; pick the B‑Class if …
Mercedes A Class
Mercedes GLA
VS
The Mercedes A‑Class is the sharper, more driver-focused hatch that feels nimble and refined on twisty roads, while the Mercedes GLA trades a bit of agility for SUV practicality with a higher ride height, extra luggage space and a commanding view of the road. Pick the A‑Class for sporty handling, …
Mercedes A Class
Porsche Cayman

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes A Class

The Mercedes A‑Class arrives as a compact charmer that dresses premium materials and a cockpit full of screens in a tidy, city-friendly package, delivering surprising agility and poise. For buyers who want a luxury badge, clever tech and a car that's equally happy in tight streets or on a spirited country run, the A‑Class offers a grown-up feel with a cheeky streak.

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Reviews Mercedes A Class

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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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Reviews Porsche Cayman

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Mercedes A Class
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Mercedes A Class
Mercedes CLA Shooting Brake
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Mercedes A Class and Mercedes CLA Shooting Brake 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. || Unsure whether the …
Mercedes A Class
Opel Astra Sports Tourer
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The Mercedes A-Klasse impresses with its luxurious interior and state-of-the-art technology, catering to those who seek a premium driving experience. In comparison, the Opel Astra Sports Tourer offers practicality and a spacious cargo area, appealing to families and individuals in need of …
Mercedes A Class
Porsche Cayman

Costs and Consumption
Price
32,600 - 66,500 £
Price
136,000 £
Consumption L/100km
2.3 - 9 L/100km
Consumption L/100km
13 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
85 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
53 - 205 g/km
co2
295 g/km
Fuel tank capacity
-
Fuel tank capacity
54 L

Dimensions and Body
Body Type
Hatchback
Body Type
Coupe
Seats
5
Seats
2
Doors
-
Doors
2
Curb weight
1,440 - 1,695 kg
Curb weight
1,490 kg
Trunk capacity
310 - 350 L
Trunk capacity
184 L
Length
-
Length
4,456 mm
Width
1,796 - 1,850 mm
Width
1,822 mm
Height
-
Height
1,267 mm
Max trunk capacity
-
Max trunk capacity
272 L
Payload
450 - 485 kg
Payload
281 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel, Plugin Hybrid, Petrol
Engine Type
Petrol
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Dual-Clutch Automatic
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive
Power HP
116 - 421 HP
Power HP
500 HP
Acceleration 0-100km/h
3.9 - 9.7 s
Acceleration 0-100km/h
3.4 s
Max Speed
-
Max Speed
315 km/h
Torque
200 - 500 Nm
Torque
450 Nm
Number of Cylinders
4
Number of Cylinders
6
Power kW
85 - 310 kW
Power kW
368 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
3,996 cm3

General
Model Year
2025
Model Year
2021
CO2 Efficiency Class
D, E, B, G
CO2 Efficiency Class
G
Brand
Mercedes-Benz
Brand
Porsche
Is the Mercedes A Class offered with different drivetrains?

The Mercedes A Class is offered with Front-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.