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Alfa Romeo Giulia vs Porsche 911 Convertible comparison

Compare performance (520 HP vs 711 HP), boot space and price (48,000 £ vs 138,000 £ ) at a glance. Find out which car is the better choice for you – Alfa Romeo Giulia or Porsche 911 Convertible?

Alfa Romeo Giulia vs Porsche 911 Convertible: Key differences

Alfa Romeo Giulia

4.1 (2 Reviews)
rate
  • significantly cheaper
  • clearly more efficient
  • noticeably more trunk space
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Porsche 911 Convertible

  • markedly more power
  • substantially quicker 0–100 km/h
  • very slightly lighter
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By Achim Sedelmaier

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

Giulia

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 Giulia is significantly cheaper – starting at 48,000 £ , while the Porsche 911 Convertible costs 138,000 £ . That’s a price difference of around 90,000 £.

Fuel consumption also shows a difference: the Alfa Romeo Giulia uses 5.4 L/100km and is clearly more efficient than the Porsche 911 Convertible with 10.5 L/100km. The difference is about 5.1 L/100km.

911 Convertible

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 offers markedly more power – delivering 711 HP compared to 520 HP. That’s roughly 191 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche 911 Convertible is substantially quicker – completing the sprint in 2.6 s, while the Alfa Romeo Giulia takes 3.9 s. That’s about 1.3 s quicker.

There’s also a difference in torque: the Porsche 911 Convertible delivers markedly more torque with 800 Nm compared to 600 Nm. That’s about 200 Nm more.

Giulia

Space and Everyday Use:

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

Seats: Alfa Romeo Giulia offers more seats – 5 vs 4.

In terms of curb weight, Porsche 911 Convertible is very slightly lighter – 1,572 kg compared to 1,640 kg. The difference is around 68 kg.

Looking at boot space, the Alfa Romeo Giulia offers noticeably more boot space – 480 L compared to 373 L. That’s a difference of about 107 L.

When it comes to payload, the Alfa Romeo Giulia carries clearly more – 535 kg compared to 345 kg. That’s a difference of about 190 kg.

Who wins the race in the data check?

The Alfa Romeo Giulia is far ahead 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 £48,000
Giulia

Alfa Romeo Giulia

  • Engine Type Diesel, Petrol
  • Transmission Automatic
  • Drive Type All-Wheel Drive, Rear-Wheel Drive
  • Power HP 210 - 520 HP
  • Consumption L/100km 5.4 - 10.1 L/100km
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Alfa Romeo Giulia

The Alfa Romeo Giulia captivates with its stunning Italian design and dynamic performance, representing a perfect blend of elegance and sportiness. Its engaging driving experience, characterised by precise handling and responsive steering, appeals to enthusiasts who crave the thrill of the road. Inside, the Giulia showcases a beautifully crafted interior that combines luxury with cutting-edge technology, making every journey a delight.

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Reviews Alfa Romeo Giulia

4.1 (2 Reviews)
rate

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

Porsche 911 Convertible

The Porsche 911 Cabriolet transforms the iconic silhouette into an open‑air weapon, offering roof-down glamour and razor-sharp handling that still feels perfectly composed on normal roads. It’s the kind of car that serves daily duties with surprising ease while delivering intoxicating engine music and a grin factor that makes every trip feel like a small victory.

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Reviews Porsche 911 Convertible

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

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Alfa Romeo Giulia
Porsche 911 Convertible

Costs and Consumption
Price
48,000 - 88,300 £
Price
138,000 - 244,500 £
Consumption L/100km
5.4 - 10.1 L/100km
Consumption L/100km
10.5 - 13.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
141 - 229 g/km
co2
237 - 310 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
Convertible
Seats
4 - 5
Seats
2 - 4
Doors
-
Doors
-
Curb weight
1,640 - 1,735 kg
Curb weight
1,572 - 1,900 kg
Trunk capacity
480 L
Trunk capacity
163 - 373 L
Length
-
Length
-
Width
1,860 - 1,874 mm
Width
1,852 - 1,900 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
415 - 535 kg
Payload
195 - 345 kg

Engine and Performance
Engine Type
Diesel, Petrol
Engine Type
Petrol, Full Hybrid
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
210 - 520 HP
Power HP
394 - 711 HP
Acceleration 0-100km/h
3.9 - 6.8 s
Acceleration 0-100km/h
2.6 - 4.7 s
Max Speed
-
Max Speed
-
Torque
470 - 600 Nm
Torque
450 - 800 Nm
Number of Cylinders
4 - 6
Number of Cylinders
6
Power kW
154 - 382 kW
Power kW
290 - 523 kW
Engine capacity
2,143 - 2,891 cm3
Engine capacity
2,981 - 3,996 cm3

General
Model Year
2,025 - 2,026
Model Year
2,024 - 2,026
CO2 Efficiency Class
E, G
CO2 Efficiency Class
G
Brand
Alfa Romeo
Brand
Porsche
Is the Alfa Romeo Giulia offered with different drivetrains?

The Alfa Romeo Giulia is offered with All-Wheel Drive or 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.