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BMW Z4 vs Porsche Boxster - Differences and prices compared

Compare performance (340 HP vs 500 HP), boot space and price (43500 £ vs 136000 £ ) at a glance. Find out which car is the better choice for you – BMW Z4 or Porsche Boxster?

BMW Z4

Porsche Boxster

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

Z4

Costs and Efficiency:

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

BMW Z4 has a convincingly advantage in terms of price – it starts at 43500 £ , while the Porsche Boxster costs 136000 £ . That’s a price difference of around 92571 £.

Fuel consumption also shows a difference: BMW Z4 manages with 6.90 L and is therefore clearly more efficient than the Porsche Boxster with 12.70 L. The difference is about 5.80 L per 100 km.

Z4

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 Boxster has a noticeable edge – offering 500 HP compared to 340 HP. That’s roughly 160 HP more horsepower.

In acceleration from 0 to 100 km/h, the Porsche Boxster is evident quicker – completing the sprint in 3.40 s, while the BMW Z4 takes 4.50 s. That’s about 1.10 s faster.

In terms of top speed, the Porsche Boxster performs slightly better – reaching 308 km/h, while the BMW Z4 tops out at 250 km/h. The difference is around 58 km/h.

There’s also a difference in torque: BMW Z4 pulls slight stronger with 500 Nm compared to 450 Nm. That’s about 50 Nm difference.

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Z4

Space and Everyday Use:

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

Both vehicles offer seating for 2 people.

In curb weight, Porsche Boxster is barely noticeable lighter – 1485 kg compared to 1510 kg. The difference is around 25 kg.

In terms of boot space, the BMW Z4 offers clearly more room – 281 L compared to 122 L. That’s a difference of about 159 L.

When it comes to payload, Porsche Boxster slightly takes the win – 270 kg compared to 235 kg. That’s a difference of about 35 kg.

Who wins the race in the data check?

The BMW Z4 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.

BMW Z4
Porsche Boxster

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £43,500
Z4

BMW Z4

  • Engine Type : Petrol
  • Transmission : Manuel, Automatic
  • Drive Type : Rear-Wheel Drive
  • Power HP : 197 - 340 HP
  • Consumption L/100km : 6.9 - 8.5 L
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BMW Z4

The BMW Z4 is a taut, road-hugging roadster that pairs elegant, low-slung styling with a roof you can drop on a sunny whim, delivering that pure, wind-in-your-hair driving thrill few cars manage to match. It’s an ideal weekend companion for drivers who prefer engagement over practicality — bring good shoes rather than a lot of luggage, and you’ll get a grin every time you turn the wheel.

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P90479448_highRes_bmw-z4-m40i-09-2022
P90479454_highRes_bmw-z4-m40i-09-2022
P90479457_highRes_bmw-z4-m40i-09-2022
P90479470_highRes_bmw-z4-m40i-09-2022
P90479471_highRes_bmw-z4-m40i-09-2022

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 BMW Z4

Reviews Porsche Boxster

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BMW Z4
Porsche Boxster

Costs and Consumption
Price
43500 - 65300 £
Price
136000 £
Consumption L/100km
6.9 - 8.5 L
Consumption L/100km
12.70 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
157 - 191 g/km
co2
288 g/km
Fuel tank capacity
52 L
Fuel tank capacity
54 L

Dimensions and Body
Body Type
Roadster
Body Type
Roadster
Seats
2
Seats
2
Doors
2
Doors
2
Curb weight
1510 - 1640 kg
Curb weight
1485 kg
Trunk capacity
281 L
Trunk capacity
122 L
Length
4324 mm
Length
4418 mm
Width
1864 mm
Width
1822 mm
Height
1303 - 1304 mm
Height
1252 mm
Max trunk capacity
-
Max trunk capacity
-
Payload
215 - 235 kg
Payload
270 kg

Engine and Performance
Engine Type
Petrol
Engine Type
Petrol
Transmission
Manuel, Automatic
Transmission
Automatic
Transmission Detail
Manual Gearbox, Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
Rear-Wheel Drive
Drive Type
Rear-Wheel Drive
Power HP
197 - 340 HP
Power HP
500 HP
Acceleration 0-100km/h
4.5 - 6.8 s
Acceleration 0-100km/h
3.40 s
Max Speed
240 - 250 km/h
Max Speed
308 km/h
Torque
320 - 500 Nm
Torque
450 Nm
Number of Cylinders
4 - 6
Number of Cylinders
6
Power kW
145 - 250 kW
Power kW
368 kW
Engine capacity
1998 - 2998 cm3
Engine capacity
3996 cm3

General
Model Year
2024 - 2026
Model Year
2023
CO2 Efficiency Class
F, G
CO2 Efficiency Class
G
Brand
BMW
Brand
Porsche

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What drive types are available for the BMW Z4?

The BMW Z4 is offered with Rear-Wheel Drive.

The prices shown are estimates based on German list prices, adjusted for local VAT. Local registration taxes (e.g. NoVA, BPM or CO2 malus) are not included. This information is not legally binding.