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BMW 5 Series Saloon vs Porsche Cayman comparison

Compare performance (727 HP vs 500 HP), boot space and price (51,400 £ vs 136,000 £ ) at a glance. Find out which car is the better choice for you – BMW 5 Series Saloon or Porsche Cayman?

BMW 5 Series Saloon vs Porsche Cayman: Key differences

BMW 5 Series Saloon

  • significantly cheaper
  • visibly more power
  • considerably more efficient
  • considerably more trunk space
details

Porsche Cayman

  • only slightly quicker 0–100 km/h
  • noticeably lighter
details

By Achim Sedelmaier

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

5 Series Saloon

Costs and Efficiency:

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

BMW 5 Series Saloon is significantly cheaper – starting at 51,400 £ , while the Porsche Cayman costs 136,000 £ . That’s a price difference of around 84,600 £.

Fuel consumption also shows a difference: the BMW 5 Series Saloon uses 2.1 L/100km and is considerably more efficient than the Porsche Cayman with 13 L/100km. The difference is about 10.9 L/100km.

Cayman

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 BMW 5 Series Saloon offers visibly more power – delivering 727 HP compared to 500 HP. That’s roughly 227 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche Cayman is only slightly quicker – completing the sprint in 3.4 s, while the BMW 5 Series Saloon takes 3.5 s. That’s about 0.1 s quicker.

There’s also a difference in torque: the BMW 5 Series Saloon delivers significantly more torque with 1,000 Nm compared to 450 Nm. That’s about 550 Nm more.

5 Series Saloon

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

In terms of curb weight, Porsche Cayman is noticeably lighter – 1,490 kg compared to 1,800 kg. The difference is around 310 kg.

Looking at boot space, the BMW 5 Series Saloon offers considerably more boot space – 520 L compared to 184 L. That’s a difference of about 336 L.

When it comes to payload, the BMW 5 Series Saloon carries substantially more – 600 kg compared to 281 kg. That’s a difference of about 319 kg.

Who wins the race in the data check?

The BMW 5 Series Saloon 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 £51,400
5 Series Saloon

BMW 5 Series Saloon

  • Engine Type Diesel MHEV, Petrol MHEV, Plugin Hybrid
  • Transmission Automatic
  • Drive Type Rear-Wheel Drive, All-Wheel Drive
  • Power HP 197 - 727 HP
  • Consumption L/100km 2.1 - 5.8 L/100km
  • Electric Range 67 - 105 km
details

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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BMW 5 Series Saloon

The BMW 5 Series Saloon blends executive poise with a driver's instinct, delivering a supple, refined cabin and a chassis that prefers composed authority over bravado. For buyers who want a grown-up commuter that still enjoys a twisty road, it’s the kind of car that keeps your colleagues impressed and your weekend grin intact.

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Reviews BMW 5 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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Costs and Consumption
Price
51,400 - 124,500 £
Price
136,000 £
Consumption L/100km
2.1 - 5.8 L/100km
Consumption L/100km
13 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
67 - 105 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
48 - 152 g/km
co2
295 g/km
Fuel tank capacity
-
Fuel tank capacity
54 L

Dimensions and Body
Body Type
Sedan
Body Type
Coupe
Seats
5
Seats
2
Doors
-
Doors
2
Curb weight
1,800 - 2,515 kg
Curb weight
1,490 kg
Trunk capacity
466 - 520 L
Trunk capacity
184 L
Length
-
Length
4,456 mm
Width
1,900 - 1,970 mm
Width
1,822 mm
Height
-
Height
1,267 mm
Max trunk capacity
-
Max trunk capacity
272 L
Payload
425 - 600 kg
Payload
281 kg

Engine and Performance
Engine Type
Diesel MHEV, Petrol MHEV, 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
197 - 727 HP
Power HP
500 HP
Acceleration 0-100km/h
3.5 - 7.5 s
Acceleration 0-100km/h
3.4 s
Max Speed
-
Max Speed
315 km/h
Torque
330 - 1,000 Nm
Torque
450 Nm
Number of Cylinders
4 - 8
Number of Cylinders
6
Power kW
145 - 535 kW
Power kW
368 kW
Engine capacity
1,995 - 4,395 cm3
Engine capacity
3,996 cm3

General
Model Year
2,023 - 2,026
Model Year
2021
CO2 Efficiency Class
D, E, B, C
CO2 Efficiency Class
G
Brand
BMW
Brand
Porsche
Is the BMW 5 Series Saloon offered with different drivetrains?

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.