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Alfa Romeo Giulia vs Mazda 3 Sedan comparison

Compare performance (520 HP vs 186 HP), boot space and price (48,000 £ vs 25,000 £ ) at a glance. Find out which car is the better choice for you – Alfa Romeo Giulia or Mazda 3 Sedan?

Alfa Romeo Giulia vs Mazda 3 Sedan: Key differences

Alfa Romeo Giulia

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

Mazda 3 Sedan

4.7 (1 Reviews)
rate
  • significantly cheaper
  • moderately 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 key factors when choosing a car – and this is often where the real differences emerge.

Mazda 3 Sedan is significantly cheaper – starting at 25,000 £ , while the Alfa Romeo Giulia costs 48,000 £ . That’s a price difference of around 23,023 £.

Fuel consumption also shows a difference: the Alfa Romeo Giulia uses 5.4 L/100km and is very slightly more efficient than the Mazda 3 Sedan with 5.5 L/100km. The difference is about 0.1 L/100km.

3 Sedan

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 substantially more power – delivering 520 HP compared to 186 HP. That’s roughly 334 HP more horsepower.

When accelerating from 0 to 100 km/h, the Alfa Romeo Giulia is considerably quicker – completing the sprint in 3.9 s, while the Mazda 3 Sedan takes 8.1 s. That’s about 4.2 s quicker.

There’s also a difference in torque: the Alfa Romeo Giulia delivers clearly more torque with 600 Nm compared to 240 Nm. That’s about 360 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.

Both vehicles offer seating for 5 people.

In terms of curb weight, Mazda 3 Sedan is moderately lighter – 1,420 kg compared to 1,640 kg. The difference is around 220 kg.

Looking at boot space, the Alfa Romeo Giulia offers very slightly more boot space – 480 L compared to 450 L. That’s a difference of about 30 L.

When it comes to payload, the Alfa Romeo Giulia carries a bit more – 535 kg compared to 481 kg. That’s a difference of about 54 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

Frequently compared as well

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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.

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Reviews Alfa Romeo Giulia

4.1 (2 Reviews)
rate

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

Mazda 3 Sedan

The Mazda 3 Sedan dresses like a compact premium car, with sculpted lines and an interior that punches well above its class. It rewards drivers with eager handling and a composed, comfortable ride that turns routine runs into something a bit more enjoyable — proof that style and substance can share the same key.

details
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Reviews Mazda 3 Sedan

4.7 (1 Reviews)
rate

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

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Alfa Romeo Giulia
Mazda 3 Sedan

Costs and Consumption
Price
48,000 - 88,300 £
Price
25,000 - 34,200 £
Consumption L/100km
5.4 - 10.1 L/100km
Consumption L/100km
5.5 - 6.1 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
141 - 229 g/km
co2
123 - 135 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
Sedan
Seats
4 - 5
Seats
5
Doors
-
Doors
-
Curb weight
1,640 - 1,735 kg
Curb weight
1,420 - 1,492 kg
Trunk capacity
480 L
Trunk capacity
450 L
Length
-
Length
-
Width
1,860 - 1,874 mm
Width
1,795 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
415 - 535 kg
Payload
467 - 481 kg

Engine and Performance
Engine Type
Diesel, Petrol
Engine Type
Petrol MHEV
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
Front-Wheel Drive
Power HP
210 - 520 HP
Power HP
140 - 186 HP
Acceleration 0-100km/h
3.9 - 6.8 s
Acceleration 0-100km/h
8.1 - 9.8 s
Max Speed
-
Max Speed
-
Torque
470 - 600 Nm
Torque
238 - 240 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4
Power kW
154 - 382 kW
Power kW
103 - 137 kW
Engine capacity
2,143 - 2,891 cm3
Engine capacity
1,998 - 2,488 cm3

General
Model Year
2,025 - 2,026
Model Year
2025
CO2 Efficiency Class
E, G
CO2 Efficiency Class
D
Brand
Alfa Romeo
Brand
Mazda
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.