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BMW 3 Series Saloon vs Porsche Cayman comparison

Compare performance (530 HP vs 500 HP), boot space and price (39,900 £ vs 136,000 £ ) at a glance. Find out which car is the better choice for you – BMW 3 Series Saloon or Porsche Cayman?

BMW 3 Series Saloon vs Porsche Cayman: Key differences

BMW 3 Series Saloon

  • significantly cheaper
  • barely more power
  • clearly more efficient
  • considerably more trunk space

Porsche Cayman

  • marginally quicker 0–100 km/h
  • very slightly lighter

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

3 Series Saloon

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

BMW 3 Series Saloon is significantly cheaper – starting at 39,900 £ , while the Porsche Cayman costs 136,000 £ . That’s a price difference of around 96,086 £.

Fuel consumption also shows a difference: the BMW 3 Series Saloon uses 2.4 L/100km and is clearly more efficient than the Porsche Cayman with 13 L/100km. The difference is about 10.6 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 BMW 3 Series Saloon offers barely more power – delivering 530 HP compared to 500 HP. That’s roughly 30 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche Cayman is marginally quicker – completing the sprint in 3.4 s, while the BMW 3 Series Saloon takes 3.5 s. That’s about 0.1 s quicker.

Looking at top speed, the Porsche Cayman is visibly faster – reaching 315 km/h, while the BMW 3 Series Saloon tops out at 250 km/h. The difference is around 65 km/h.

There’s also a difference in torque: the BMW 3 Series Saloon delivers clearly more torque with 700 Nm compared to 450 Nm. That’s about 250 Nm more.

3 Series Saloon

Space and Everyday Use:

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

Seats: BMW 3 Series Saloon offers more seats – 5 vs 2.

In terms of curb weight, Porsche Cayman is very slightly lighter – 1,490 kg compared to 1,575 kg. The difference is around 85 kg.

Looking at boot space, the BMW 3 Series Saloon offers considerably more boot space – 480 L compared to 184 L. That’s a difference of about 296 L.

When it comes to payload, the BMW 3 Series Saloon carries significantly more – 495 kg compared to 281 kg. That’s a difference of about 214 kg.

Who wins the race in the data check?

The BMW 3 Series Saloon 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 £39,900
3 Series Saloon

BMW 3 Series Saloon

  • Engine Type : Diesel MHEV, Petrol, Petrol MHEV, Plugin Hybrid
  • Transmission : Automatic, Manuel
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 150 - 530 HP
  • Consumption L/100km : 2.4 - 10.1 L/100km
  • Electric Range : 96 - 101 km
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Porsche Cayman

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BMW 3 Series Saloon

The BMW 3 Series saloon is a driver's car in a suit, blending poised handling with a cabin that feels more premium than its practicality suggests. It’s composed enough for daily duties yet playful enough to keep weekend drives interesting, making it a sensible choice for buyers who still want to have fun.

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Reviews BMW 3 Series Saloon

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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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BMW 3 Series Saloon
Porsche Cayman

Costs and Consumption
Price
39,900 - 91,000 £
Price
136,000 £
Consumption L/100km
2.4 - 10.1 L/100km
Consumption L/100km
13 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
96 - 101 km
Electric Range
-
Battery Capacity
19.5 kWh
Battery Capacity
-
co2
54 - 227 g/km
co2
295 g/km
Fuel tank capacity
40 - 59 L
Fuel tank capacity
54 L

Dimensions and Body
Body Type
Sedan
Body Type
Coupe
Seats
5
Seats
2
Doors
4
Doors
2
Curb weight
1,575 - 1,960 kg
Curb weight
1,490 kg
Trunk capacity
375 - 480 L
Trunk capacity
184 L
Length
4,713 mm
Length
4,456 mm
Width
1,827 - 1,903 mm
Width
1,822 mm
Height
1,440 - 1,446 mm
Height
1,267 mm
Max trunk capacity
-
Max trunk capacity
272 L
Payload
405 - 495 kg
Payload
281 kg

Engine and Performance
Engine Type
Diesel MHEV, Petrol, Petrol MHEV, Plugin Hybrid
Engine Type
Petrol
Transmission
Automatic, Manuel
Transmission
Automatic
Transmission Detail
Automatic Gearbox, Manual Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive
Power HP
150 - 530 HP
Power HP
500 HP
Acceleration 0-100km/h
3.5 - 8.6 s
Acceleration 0-100km/h
3.4 s
Max Speed
218 - 250 km/h
Max Speed
315 km/h
Torque
250 - 700 Nm
Torque
450 Nm
Number of Cylinders
4 - 6
Number of Cylinders
6
Power kW
110 - 390 kW
Power kW
368 kW
Engine capacity
1,995 - 2,998 cm3
Engine capacity
3,996 cm3

General
Model Year
2,024 - 2,025
Model Year
2,021
CO2 Efficiency Class
D, E, F, G, B
CO2 Efficiency Class
G
Brand
BMW
Brand
Porsche
Is the BMW 3 Series Saloon offered with different drivetrains?

The BMW 3 Series Saloon is available as 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.