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BMW 5 Series Saloon vs Porsche Boxster 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 Boxster?

BMW 5 Series Saloon vs Porsche Boxster: Key differences

BMW 5 Series Saloon

  • considerably cheaper
  • clearly more power
  • substantially more efficient
  • significantly more trunk space
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Porsche Boxster

  • marginally quicker 0–100 km/h
  • visibly lighter
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Here’s where it gets real: The technical differences in detail

5 Series Saloon

Costs and Efficiency:

Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.

BMW 5 Series Saloon is considerably cheaper – starting at 51,400 £ , while the Porsche Boxster 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 substantially more efficient than the Porsche Boxster with 12.7 L/100km. The difference is about 10.6 L/100km.

Boxster

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 clearly 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 Boxster is marginally 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 considerably 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 Boxster is visibly lighter – 1,485 kg compared to 1,800 kg. The difference is around 315 kg.

Looking at boot space, the BMW 5 Series Saloon offers significantly more boot space – 520 L compared to 122 L. That’s a difference of about 398 L.

When it comes to payload, the BMW 5 Series Saloon carries significantly more – 600 kg compared to 270 kg. That’s a difference of about 330 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, Plug-in 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
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View detailed analysis

Engine and Performance
View detailed analysis

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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 Boxster

The Porsche Boxster epitomizes the essence of a pure, open-top driving experience with its mid-engine roadster design. Known for its agile handling and dynamic performance, the Boxster seamlessly blends luxury with thrilling precision on the road. Its unmistakable styling and superior engineering continue to captivate automotive enthusiasts who crave a visceral connection to the art of driving.

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Reviews Porsche Boxster

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Porsche Boxster

Costs and Consumption
Price
51,400 - 124,500 £
Price
136,000 £
Consumption L/100km
2.1 - 5.8 L/100km
Consumption L/100km
12.7 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
288 g/km
Fuel tank capacity
-
Fuel tank capacity
54 L

Dimensions and Body
Body Type
Sedan
Body Type
Roadster
Seats
5
Seats
2
Doors
-
Doors
2
Curb weight
1,800 - 2,515 kg
Curb weight
1,485 kg
Trunk capacity
466 - 520 L
Trunk capacity
122 L
Length
-
Length
4,418 mm
Width
1,900 - 1,970 mm
Width
1,822 mm
Height
-
Height
1,252 mm
Max trunk capacity
-
Max trunk capacity
-
Payload
425 - 600 kg
Payload
270 kg

Engine and Performance
Engine Type
Diesel MHEV, Petrol MHEV, Plug-in 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
308 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
2023
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.