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smart #3 vs Porsche Cayenne comparison

Compare performance (272 HP vs 1,156 HP), boot space and price (42,000 £ vs 90,200 £ ) at a glance. Find out which car is the better choice for you – smart #3 or Porsche Cayenne?

smart #3 vs Porsche Cayenne: Key differences

smart #3

5 (1 Reviews)
rate
  • significantly cheaper
  • a bit more efficient
  • a bit lighter
details

Porsche Cayenne

3.2 (3 Reviews)
rate
  • substantially more power
  • visibly more electric range
  • substantially quicker 0–100 km/h
  • clearly more trunk space
details

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

#3

Costs and Efficiency:

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

smart #3 is significantly cheaper – starting at 42,000 £ , while the Porsche Cayenne costs 90,200 £ . That’s a price difference of around 48,180 £.

In terms of energy consumption, the smart #3 is a bit more efficient: consuming 16.3 kWh/100km compared to 18.9 kWh/100km for the Porsche Cayenne. That’s a difference of about 2.6 kWh/100km.

As for electric range, the Porsche Cayenne offers visibly more range – reaching up to 668 km, about 213 km more than the smart #3.

Cayenne

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 Cayenne offers substantially more power – delivering 1,156 HP compared to 272 HP. That’s roughly 884 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche Cayenne is substantially quicker – completing the sprint in 2.5 s, while the smart #3 takes 5.8 s. That’s about 3.3 s quicker.

There’s also a difference in torque: the Porsche Cayenne delivers substantially more torque with 1,500 Nm compared to 384 Nm. That’s about 1,116 Nm more.

#3

Space and Everyday Use:

Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.

Both vehicles offer seating for 5 people.

In terms of curb weight, smart #3 is a bit lighter – 1,810 kg compared to 2,130 kg. The difference is around 320 kg.

Looking at boot space, the Porsche Cayenne offers clearly more boot space – 781 L compared to 370 L. That’s a difference of about 411 L.

When it comes to payload, the Porsche Cayenne carries visibly more – 705 kg compared to 450 kg. That’s a difference of about 255 kg.

Who wins the race in the data check?

The Porsche Cayenne 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 £90,200
Cayenne

Porsche Cayenne

  • Engine Type Petrol, Plugin Hybrid, Electric
  • Transmission Automatic
  • Drive Type All-Wheel Drive
  • Power HP 353 - 1,156 HP
  • Consumption L/100km 4 - 11 L/100km
  • Consumption kWh/100km 18.9 - 20.6 kWh/100km
  • Electric Range 74 - 668 km
details

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smart #3

The Smart #3 turns the brand's cheeky city-car attitude into a grown-up compact SUV, pairing sleek styling with a surprisingly roomy, well-made interior. It's a brilliant pick for buyers who want electric ease without dullness — practical enough for daily life, but still lively enough to make parking and grocery runs feel a little fun.

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Reviews smart #3

5 (1 Reviews)
rate
Ronny
16 Oct 2025, 13:10:59

Handsome design, packed with advanced driver‑assist technology and stellar performance — all at an attractive price. Highly recommended, this car!

Porsche Cayenne

Few SUVs blend athletic poise and Teutonic precision like the Porsche Cayenne, putting genuine sports‑car feeling into a roomy, everyday package. If you want a practical family hauler that still makes you grin every time you merge, the Cayenne delivers — turning errands into an excuse for a spirited drive.

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Reviews Porsche Cayenne

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No reviews yet. Share your experience and help others decide.

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Costs and Consumption
Price
42,000 £
Price
90,200 - 144,400 £
Consumption L/100km
-
Consumption L/100km
4 - 11 L/100km
Consumption kWh/100km
16.3 kWh/100km
Consumption kWh/100km
18.9 - 20.6 kWh/100km
Electric Range
455 km
Electric Range
74 - 668 km
Battery Capacity
-
Battery Capacity
-
co2
0 g/km
co2
0 - 249 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
5
Seats
4 - 5
Doors
-
Doors
-
Curb weight
1,810 kg
Curb weight
2,130 - 2,725 kg
Trunk capacity
370 L
Trunk capacity
434 - 781 L
Length
-
Length
-
Width
1,844 mm
Width
1,980 - 1,983 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
450 kg
Payload
525 - 705 kg

Engine and Performance
Engine Type
Electric
Engine Type
Petrol, Plugin Hybrid, Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Reduction Gearbox
Transmission Detail
Automatic Gearbox, Reduction Gearbox
Drive Type
Rear-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
272 HP
Power HP
353 - 1,156 HP
Acceleration 0-100km/h
5.8 s
Acceleration 0-100km/h
2.5 - 6 s
Max Speed
-
Max Speed
-
Torque
384 Nm
Torque
500 - 1,500 Nm
Number of Cylinders
-
Number of Cylinders
6
Power kW
200 kW
Power kW
260 - 850 kW
Engine capacity
-
Engine capacity
2,995 cm3

General
Model Year
2025
Model Year
2,025 - 2,026
CO2 Efficiency Class
A
CO2 Efficiency Class
G, B, A
Brand
smart
Brand
Porsche
What drivetrain options does the smart #3 have?

The smart #3 is available as Rear-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.