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BMW i4 vs Porsche Boxster comparison

Compare performance (601 HP vs 500 HP), boot space and price (49,900 £ vs 136,000 £ ) at a glance. Find out which car is the better choice for you – BMW i4 or Porsche Boxster?

BMW i4 vs Porsche Boxster: Key differences

BMW i4

5 (3 Reviews)
rate
  • significantly cheaper
  • slightly more power
  • considerably more trunk space
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Porsche Boxster

  • marginally quicker 0–100 km/h
  • visibly lighter
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All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.

By Achim Sedelmaier

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

i4

Costs and Efficiency:

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

BMW i4 is significantly cheaper – starting at 49,900 £ , while the Porsche Boxster costs 136,000 £ . That’s a price difference of around 86,143 £.

Boxster

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 i4 offers slightly more power – delivering 601 HP compared to 500 HP. That’s roughly 101 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 i4 takes 3.7 s. That’s about 0.3 s quicker.

There’s also a difference in torque: the BMW i4 delivers considerably more torque with 795 Nm compared to 450 Nm. That’s about 345 Nm more.

i4

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: BMW i4 offers more seats – 5 vs 2.

In terms of curb weight, Porsche Boxster is visibly lighter – 1,485 kg compared to 2,070 kg. The difference is around 585 kg.

Looking at boot space, the BMW i4 offers considerably more boot space – 470 L compared to 122 L. That’s a difference of about 348 L.

When it comes to payload, the BMW i4 carries substantially more – 480 kg compared to 270 kg. That’s a difference of about 210 kg.

Who wins the race in the data check?

The BMW i4 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 £49,900
i4

BMW i4

  • Engine Type Electric
  • Transmission Automatic
  • Drive Type Rear-Wheel Drive, All-Wheel Drive
  • Power HP 286 - 601 HP
  • Consumption kWh/100km 14.7 - 16.7 kWh/100km
  • Electric Range 514 - 613 km
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Frequently compared as well

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Porsche Boxster

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BMW i4

The BMW i4 arrives with the poise of a classic Gran Coupé, marrying BMW's playful handling with a sleek, modern interior that makes switching to electric feel like an upgrade rather than a compromise. For buyers who want a practical daily driver that still enjoys a spirited back-road run, the i4 quietly delivers smiles and a surprising dose of driver engagement.

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P90439369_highRes_bmw-i4-m50-9-2021
P90422904_highRes_bmw-i4-interieur-6-2

Reviews BMW i4

5 (3 Reviews)
rate
Marco
23 Apr 2026, 14:56:19

Amazing car with enormous torque, equipment and driving experience, at an acceptable fuel consumption.

How do you mainly use this car? (optional): Company car / Business
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
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Practicality / Trunk & Everyday Use
Value for Money

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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BMW i4
Porsche Boxster

Costs and Consumption
Price
49,900 - 63,200 £
Price
136,000 £
Consumption L/100km
-
Consumption L/100km
12.7 L/100km
Consumption kWh/100km
14.7 - 16.7 kWh/100km
Consumption kWh/100km
-
Electric Range
514 - 613 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
0 g/km
co2
288 g/km
Fuel tank capacity
-
Fuel tank capacity
54 L

Dimensions and Body
Body Type
Hatchback
Body Type
Roadster
Seats
5
Seats
2
Doors
-
Doors
2
Curb weight
2,070 - 2,285 kg
Curb weight
1,485 kg
Trunk capacity
470 L
Trunk capacity
122 L
Length
-
Length
4,418 mm
Width
1,852 mm
Width
1,822 mm
Height
-
Height
1,252 mm
Max trunk capacity
-
Max trunk capacity
-
Payload
445 - 480 kg
Payload
270 kg

Engine and Performance
Engine Type
Electric
Engine Type
Petrol
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Reduction Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive
Power HP
286 - 601 HP
Power HP
500 HP
Acceleration 0-100km/h
3.7 - 6 s
Acceleration 0-100km/h
3.4 s
Max Speed
-
Max Speed
308 km/h
Torque
400 - 795 Nm
Torque
450 Nm
Number of Cylinders
-
Number of Cylinders
6
Power kW
210 - 442 kW
Power kW
368 kW
Engine capacity
-
Engine capacity
3,996 cm3

General
Model Year
2,024 - 2,025
Model Year
2023
CO2 Efficiency Class
A
CO2 Efficiency Class
G
Brand
BMW
Brand
Porsche
Is the BMW i4 offered with different drivetrains?

The BMW i4 is offered with 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.