Audi A3 Sportback vs Mercedes GLB – Differences & prices compared

Q: What is the maximum horsepower of the Audi A3 Sportback?

The Audi A3 Sportback reaches a peak output of 400 HP, depending on the model.

Q: How much fuel does the Audi A3 Sportback use?

On average, the Audi A3 Sportback consumes 0.30 L.

Q: What is the Audi A3 Sportback’s maximum WLTP range?

Depending on equipment, the WLTP range reaches up to 142 km.

Q: How many kWh does the Audi A3 Sportback’s battery hold?

The battery offers a capacity of 19.70 kWh.

Q: What maximum speed does the Audi A3 Sportback reach?

Depending on the model, top speed is 250 km/h.

Q: How big is the Audi A3 Sportback overall?

Overall, the Audi A3 Sportback is 4353 mm long, 1816 mm wide and 1470 mm high.

Q: What drivetrain options does the Mercedes GLB have?

Available configurations include Front-Wheel Drive or All-Wheel Drive.

Q: How much power does the Mercedes GLB deliver on the road?

Depending on the version, the Mercedes GLB delivers up to 320 HP.

Q: How much fuel does the Mercedes GLB use?

Based on WLTP testing, consumption is around 5.60 L.

Everyday use, family trips or long-distance drives – here’s where the differences show.
Discover whether Audi A3 Sportback or Mercedes GLB fits your lifestyle better.

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

Costs and Efficiency: When it comes to price and running costs, the biggest differences usually appear. This is often where you see which car fits your budget better in the long run.

Audi A3 Sportback has a significantly advantage in terms of price – it starts at 26800 £, while the Mercedes GLB costs 40500 £. That’s a price difference of around 13681 £.

Fuel consumption also shows a difference: Audi A3 Sportback manages with 0.30 L and is therefore clearly more efficient than the Mercedes GLB with 5.60 L. The difference is about 5.30 L per 100 km.

Engine and Performance: Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.

When it comes to engine power, the Audi A3 Sportback has a to a small extent edge – offering 400 HP compared to 320 HP. That’s roughly 80 HP more horsepower.

In acceleration from 0 to 100 km/h, the Audi A3 Sportback is significantly quicker – completing the sprint in 3.80 s, while the Mercedes GLB takes 5.50 s. That’s about 1.70 s faster.

There’s no difference in top speed – both reach 250 km/h.

There’s also a difference in torque: Audi A3 Sportback pulls slightly stronger with 500 Nm compared to 400 Nm. That’s about 100 Nm difference.

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Space and Everyday Use: Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.

Both vehicles offer seating for 5 people.

In curb weight, Audi A3 Sportback is evident lighter – 1360 kg compared to 1640 kg. The difference is around 280 kg.

In terms of boot space, the Mercedes GLB offers noticeable more room – 570 L compared to 380 L. That’s a difference of about 190 L.

In maximum load capacity, the Mercedes GLB performs noticeable better – up to 1805 L, which is about 605 L more than the Audi A3 Sportback.

When it comes to payload, Mercedes GLB slight takes the win – 500 kg compared to 480 kg. That’s a difference of about 20 kg.

Who comes out on top?

Overall, the Audi A3 Sportback shows itself to be is largely superior 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 £26,800

Audi A3 Sportback

Price : 26800 - 56600 £
Body Type : Hatchback
Engine Type : Petrol, Petrol MHEV, Diesel, Plugin Hybrid
Transmission : Manuel, Automatic
Transmission Detail : Manual Gearbox, Dual-Clutch Automatic
Drive Type : Front-Wheel Drive, All-Wheel Drive
Power HP : 116 - 400 HP
Consumption L/100km : 0.3 - 9.3 L
Electric Range : 135 - 142 km
Battery Capacity : 19.70 kWh
Seats : 5
Acceleration 0-100km/h : 3.8 - 10.1 s
Model Year : 2025
Max Speed : 205 - 250 km/h
Torque : 220 - 500 Nm
Number of Cylinders : 4 - 5
Doors : 5
Model : A3
Modell : A3 allstreet 1.5 TFSI, A3 Sportback 1.5 TFSI, A3 Sportback 2.0 TDI, A3 allstreet 1.5 TFSI e, A3 allstreet 2.0 TFSI, A3 allstreet 2.0 TDI, A3 Sportback 1.5 TFSI e, A3 Sportback 2.0 TFSI, S3 Sportback, RS3 Sportback
CO2 Efficiency Class : D, B, F, E, G
Trim Level : S tronic, advanced, advanced S tronic, S line, S line S tronic, quattro S tronic, advanced quattro S tronic, S line quattro S tronic
Power kW : 85 - 294 kW
co2 : 6 - 211 g/km
Engine capacity : 1498 - 2480 cm3
Curb weight : 1360 - 1685 kg
Fuel tank capacity : 40 - 55 L
Trunk capacity : 280 - 380 L
Length : 4352 - 4381 mm
Width : 1816 - 1851 mm
Height : 1415 - 1470 mm
Brand : Audi
Max trunk capacity : 1100 - 1200 L
Payload : 410 - 480 kg

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Audi A3 Sportback

The Audi A3 Sportback seamlessly blends style and practicality, making it an ideal choice for those who seek both sophistication and functionality. With its sleek lines and premium interior, the A3 Sportback offers a driving experience that is both dynamic and comfortable. Additionally, its advanced technology and safety features ensure that every journey is as enjoyable as it is secure.

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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.

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