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Alfa Romeo Stelvio vs Porsche 911 Convertible – Performance, range & efficiency compared

Both models have their strengths – but which one suits you more?
Compare performance, efficiency, price and space directly: Alfa Romeo Stelvio or Porsche 911 Convertible?

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

Stelvio @ Alfa Romeo / Stellantis Media

Costs and Efficiency:

Price and efficiency are often the first things buyers look at. Here it becomes clear which model has the long-term edge – whether at the pump, the plug, or in purchase price.

Alfa Romeo Stelvio has a significantly advantage in terms of price – it starts at 51900 £, while the Porsche 911 Convertible costs 122400 £. That’s a price difference of around 70458 £.

Fuel consumption also shows a difference: Alfa Romeo Stelvio manages with 6 L and is therefore significantly more efficient than the Porsche 911 Convertible with 10.30 L. The difference is about 4.30 L per 100 km.

Stelvio @ Alfa Romeo / Stellantis Media

Engine and Performance:

Power, torque and acceleration say a lot about how a car feels on the road. This is where you see which model delivers more driving dynamics.

When it comes to engine power, the Porsche 911 Convertible has a decisively edge – offering 711 HP compared to 210 HP. That’s roughly 501 HP more horsepower.

In acceleration from 0 to 100 km/h, the Porsche 911 Convertible is convincingly quicker – completing the sprint in 2.60 s, while the Alfa Romeo Stelvio takes 6.60 s. That’s about 4 s faster.

In terms of top speed, the Porsche 911 Convertible performs clearly perceptible better – reaching 322 km/h, while the Alfa Romeo Stelvio tops out at 215 km/h. The difference is around 107 km/h.

There’s also a difference in torque: Porsche 911 Convertible pulls clearly stronger with 800 Nm compared to 470 Nm. That’s about 330 Nm difference.

Stelvio @ Alfa Romeo / Stellantis Media

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: Alfa Romeo Stelvio offers to a small extent more seating capacity – 5 vs 4.

In curb weight, Porsche 911 Convertible is hardly perceptible lighter – 1655 kg compared to 1820 kg. The difference is around 165 kg.

In terms of boot space, the Alfa Romeo Stelvio offers decisively more room – 525 L compared to 163 L. That’s a difference of about 362 L.

When it comes to payload, Alfa Romeo Stelvio decisively takes the win – 590 kg compared to 345 kg. That’s a difference of about 245 kg.

Who wins the race?

The Porsche 911 Convertible proves to be is largely superior and therefore becomes our DriveDuel Champion!
Porsche 911 Convertible is the better all-rounder in this comparison.

from about £122,400
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Porsche 911 Convertible

  • Engine Type : Petrol, Full Hybrid
  • Transmission : Automatic, Manuel
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 394 - 711 HP
  • Consumption L/100km : 10.3 - 11.7 L

Alfa Romeo Stelvio

5 (1)
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The Alfa Romeo Stelvio combines Italian artistry with sporty performance, making it a standout in the SUV market. Its dynamic design captures the essence of elegance and agility, while the interior offers a driver-focused experience that enhances every journey. With a perfect blend of luxury and power, the Stelvio is ideal for those seeking both style and substance on the road.

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Porsche 911 Convertible

The Porsche 911 Cabrio is a stunning blend of timeless design and exhilarating performance. With its sleek lines and convertible roof, this model seamlessly combines the thrill of open-air driving with the precision and heritage of the Porsche brand. The interior exudes luxury, providing both driver and passenger with an unmatched sense of elegance and comfort.

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Alfa Romeo Stelvio
Porsche 911 Convertible
Stelvio @ Alfa Romeo / Stellantis Media

Costs and Consumption

Price
51900 - 60900 £
Price
122400 - 244500 £
Consumption L/100km
6 L
Consumption L/100km
10.3 - 11.7 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
157 g/km
co2
234 - 265 g/km
Fuel tank capacity
58 L
Fuel tank capacity
63 L

Dimensions and Body

Body Type
SUV
Body Type
Convertible
Seats
5
Seats
4
Doors
5
Doors
2
Curb weight
1820 kg
Curb weight
1655 - 1900 kg
Trunk capacity
525 L
Trunk capacity
163 L
Length
4687 mm
Length
4542 - 4553 mm
Width
1903 mm
Width
1852 - 1900 mm
Height
1693 mm
Height
1292 - 1302 mm
Max trunk capacity
1600 L
Max trunk capacity
-
Payload
590 kg
Payload
275 - 345 kg

Engine and Performance

Engine Type
Diesel
Engine Type
Petrol, Full Hybrid
Transmission
Automatic
Transmission
Automatic, Manuel
Transmission Detail
Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic, Manual Gearbox
Drive Type
All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
210 HP
Power HP
394 - 711 HP
Acceleration 0-100km/h
6.60 s
Acceleration 0-100km/h
2.6 - 4.7 s
Max Speed
215 km/h
Max Speed
291 - 322 km/h
Torque
470 Nm
Torque
450 - 800 Nm
Number of Cylinders
4
Number of Cylinders
6
Power kW
154 kW
Power kW
290 - 523 kW
Engine capacity
2143 cm3
Engine capacity
2981 - 3591 cm3

General

Model Year
2024 - 2025
Model Year
2024 - 2026
CO2 Efficiency Class
F
CO2 Efficiency Class
G
Brand
Alfa Romeo
Brand
Porsche
What drivetrain options does the Alfa Romeo Stelvio have?

The Alfa Romeo Stelvio is available as All-Wheel Drive.

The prices and data displayed are estimates based on German list prices and may vary by country. This information is not legally binding.