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Alfa Romeo Giulia vs BMW Z4 comparison

Compare performance (520 HP vs 340 HP), boot space and price (48,000 £ vs 43,500 £ ) at a glance. Find out which car is the better choice for you – Alfa Romeo Giulia or BMW Z4?

Alfa Romeo Giulia vs BMW Z4: Key differences

Alfa Romeo Giulia

4.1 (2 Reviews)
rate
  • markedly more power
  • clearly more efficient
  • slightly quicker 0–100 km/h
  • substantially more trunk space
details

BMW Z4

4.4 (1 Reviews)
rate
  • somewhat cheaper
  • only slightly lighter
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

Giulia

Costs and Efficiency:

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

BMW Z4 is somewhat cheaper – starting at 43,500 £ , while the Alfa Romeo Giulia costs 48,000 £ . That’s a price difference of around 4,543 £.

Fuel consumption also shows a difference: the Alfa Romeo Giulia uses 5.4 L/100km and is clearly more efficient than the BMW Z4 with 6.9 L/100km. The difference is about 1.5 L/100km.

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 Alfa Romeo Giulia offers markedly more power – delivering 520 HP compared to 340 HP. That’s roughly 180 HP more horsepower.

When accelerating from 0 to 100 km/h, the Alfa Romeo Giulia is slightly quicker – completing the sprint in 3.9 s, while the BMW Z4 takes 4.5 s. That’s about 0.6 s quicker.

There’s also a difference in torque: the Alfa Romeo Giulia delivers moderately more torque with 600 Nm compared to 500 Nm. That’s about 100 Nm more.

Giulia

Space and Everyday Use:

Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.

Seats: Alfa Romeo Giulia offers more seats – 5 vs 2.

In terms of curb weight, BMW Z4 is only slightly lighter – 1,510 kg compared to 1,640 kg. The difference is around 130 kg.

Looking at boot space, the Alfa Romeo Giulia offers substantially more boot space – 480 L compared to 281 L. That’s a difference of about 199 L.

When it comes to payload, the Alfa Romeo Giulia carries significantly more – 535 kg compared to 235 kg. That’s a difference of about 300 kg.

Who wins the race in the data check?

The Alfa Romeo Giulia 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.

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
details

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View detailed analysis

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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.

details
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fca_germany_alfa_romeo_giulia_quadrifoglio_my2020_222-5ed60a3d4d877
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fca_germany_alfa_romeo_giulia_quadrifoglio_my2020_063-5ed6059fd7bec

Reviews Alfa Romeo Giulia

4.1 (2 Reviews)
rate

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

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.

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

Reviews BMW Z4

4.4 (1 Reviews)
rate
Maingard
26 Apr 2026, 13:19:10

Responsive car, very high-performing, very agile in corners.

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

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BMW Z4

Costs and Consumption
Price
48,000 - 88,300 £
Price
43,500 - 65,300 £
Consumption L/100km
5.4 - 10.1 L/100km
Consumption L/100km
6.9 - 8.5 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
141 - 229 g/km
co2
157 - 191 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
Roadster
Seats
4 - 5
Seats
2
Doors
-
Doors
-
Curb weight
1,640 - 1,735 kg
Curb weight
1,510 - 1,640 kg
Trunk capacity
480 L
Trunk capacity
281 L
Length
-
Length
-
Width
1,860 - 1,874 mm
Width
1,864 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
415 - 535 kg
Payload
215 - 235 kg

Engine and Performance
Engine Type
Diesel, Petrol
Engine Type
Petrol
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Manual Gearbox, Automatic Gearbox
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Drive Type
Rear-Wheel Drive
Power HP
210 - 520 HP
Power HP
197 - 340 HP
Acceleration 0-100km/h
3.9 - 6.8 s
Acceleration 0-100km/h
4.5 - 6.8 s
Max Speed
-
Max Speed
-
Torque
470 - 600 Nm
Torque
320 - 500 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4 - 6
Power kW
154 - 382 kW
Power kW
145 - 250 kW
Engine capacity
2,143 - 2,891 cm3
Engine capacity
1,998 - 2,998 cm3

General
Model Year
2,025 - 2,026
Model Year
2,025 - 2,026
CO2 Efficiency Class
E, G
CO2 Efficiency Class
F, G
Brand
Alfa Romeo
Brand
BMW
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.