@ Alfa Romeo / Stellantis Media
@ Mercedes-Benz Group Media
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Alfa Romeo Giulia vs Mercedes GLB – Performance, range & efficiency compared

Everyday use, family trips or long-distance drives – here’s where the differences show.
Discover whether Alfa Romeo Giulia or Mercedes GLB fits your lifestyle better.

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

Giulia @ Alfa Romeo / Stellantis Media

Costs and Efficiency:

Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.

Mercedes GLB has a somewhat advantage in terms of price – it starts at 40500 £, while the Alfa Romeo Giulia costs 48000 £. That’s a price difference of around 7491 £.

Fuel consumption also shows a difference: Alfa Romeo Giulia manages with 5.40 L and is therefore minimal more efficient than the Mercedes GLB with 5.60 L. The difference is about 0.20 L per 100 km.

GLB @ Mercedes-Benz Group Media

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 Mercedes GLB has a noticeable edge – offering 320 HP compared to 210 HP. That’s roughly 110 HP more horsepower.

In acceleration from 0 to 100 km/h, the Mercedes GLB is noticeable quicker – completing the sprint in 5.50 s, while the Alfa Romeo Giulia takes 6.80 s. That’s about 1.30 s faster.

In terms of top speed, the Mercedes GLB performs hardly perceptible better – reaching 250 km/h, while the Alfa Romeo Giulia tops out at 235 km/h. The difference is around 15 km/h.

There’s also a difference in torque: Alfa Romeo Giulia pulls to a small extent stronger with 470 Nm compared to 400 Nm. That’s about 70 Nm difference.

Giulia @ Alfa Romeo / Stellantis Media

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.

Both models weigh roughly the same – around 1640 kg.

In terms of boot space, the Mercedes GLB offers a bit more room – 570 L compared to 480 L. That’s a difference of about 90 L.

When it comes to payload, Alfa Romeo Giulia barely noticeable takes the win – 535 kg compared to 500 kg. That’s a difference of about 35 kg.

Who comes out on top?

Overall, the Mercedes GLB shows itself to be dominates this comparison and secures the title of DriveDuel Champion.
It convinces with the more balanced overall package and proves to be the more versatile choice for everyday use.

from about £40,500
GLB @ Mercedes-Benz Group Media

Mercedes GLB

  • Engine Type : Petrol MHEV, Diesel
  • Transmission : Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 116 - 320 HP
  • Consumption L/100km : 5.6 - 9 L
details

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
fca_germany_alfa_romeo_giulia_quadrifoglio_my2020_173-5ed608edc95c9 @ Alfa Romeo / Stellantis Media
fca_germany_alfa_romeo_giulia_quadrifoglio_my2020_222-5ed60a3d4d877 @ Alfa Romeo / Stellantis Media
fca_germany_alfa_romeo_giulia_quadrifoglio_my2020_127-5ed60851062af @ Alfa Romeo / Stellantis Media
giuliastelvioquadrifogliomy2023-5eb2ca0bb242d_5eb3d66ae7e99 @ Alfa Romeo / Stellantis Media
fca_germany_alfa_romeo_giulia_quadrifoglio_my2020_063-5ed6059fd7bec @ Alfa Romeo / Stellantis Media

Mercedes GLB

The Mercedes-Benz GLB exudes a robust yet sophisticated presence, combining the versatility of an SUV with the elegance the brand is renowned for. Its spacious interior is thoughtfully designed to accommodate modern lifestyles, offering flexibility and comfort for both drivers and passengers. With advanced technology seamlessly integrated throughout, the GLB ensures a driving experience that is both dynamic and intuitive.

details
19C0853_001 @ Mercedes-Benz Group Media
19C0853_003 @ Mercedes-Benz Group Media
19C0853_015 @ Mercedes-Benz Group Media
19C0853_069 @ Mercedes-Benz Group Media
19C0797_007 @ Mercedes-Benz Group Media

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Giulia @ Alfa Romeo / Stellantis Media
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Costs and Consumption
Price
48000 - 57000 £
Price
40500 - 65300 £
Consumption L/100km
5.40 L
Consumption L/100km
5.6 - 9 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
141 g/km
co2
146 - 204 g/km
Fuel tank capacity
58 L
Fuel tank capacity
52 - 60 L

Dimensions and Body
Body Type
Sedan
Body Type
SUV
Seats
5
Seats
5
Doors
4
Doors
5
Curb weight
1640 kg
Curb weight
1640 - 1820 kg
Trunk capacity
480 L
Trunk capacity
565 - 570 L
Length
4650 mm
Length
4634 - 4650 mm
Width
1860 mm
Width
1834 - 1850 mm
Height
1438 mm
Height
1665 - 1692 mm
Max trunk capacity
-
Max trunk capacity
1800 - 1805 L
Payload
535 kg
Payload
500 kg

Engine and Performance
Engine Type
Diesel
Engine Type
Petrol MHEV, Diesel
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
All-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
210 HP
Power HP
116 - 320 HP
Acceleration 0-100km/h
6.80 s
Acceleration 0-100km/h
5.5 - 11.5 s
Max Speed
235 km/h
Max Speed
188 - 250 km/h
Torque
470 Nm
Torque
230 - 400 Nm
Number of Cylinders
4
Number of Cylinders
4
Power kW
154 kW
Power kW
85 - 235 kW
Engine capacity
2143 cm3
Engine capacity
1332 - 1991 cm3

General
Model Year
2024 - 2025
Model Year
2025
CO2 Efficiency Class
E
CO2 Efficiency Class
E, F, G
Brand
Alfa Romeo
Brand
Mercedes-Benz

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Is the Alfa Romeo Giulia offered with different drivetrains?

Available configurations include 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.