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Alfa Romeo Junior vs Audi A3 Sportback comparison

Compare performance (280 HP vs 400 HP), boot space and price (26,100 £ vs 27,000 £ ) at a glance. Find out which car is the better choice for you – Alfa Romeo Junior or Audi A3 Sportback?

Alfa Romeo Junior vs Audi A3 Sportback: Key differences

Alfa Romeo Junior

4.8 (8 Reviews)
rate
  • barely cheaper
  • clearly more electric range
  • very slightly more trunk space
details

Audi A3 Sportback

4.1 (2 Reviews)
rate
  • visibly more power
  • substantially more efficient
  • considerably quicker 0–100 km/h
  • marginally 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

Junior

Alfa Romeo Junior vs. Audi A3 Sportback: A Clash of Innovation and Elegance

In the bustling world of compact cars, where innovation and elegance intertwine, two names stand out: the Alfa Romeo Junior and the Audi A3 Sportback. These vehicles represent the pinnacle of modern engineering, each bringing unique features to the compact automotive segment. Let's delve into a detailed comparison, focusing on their technical prowess and innovative touches.

A3 Sportback

Design and Dimensions

The Alfa Romeo Junior, with its SUV body type, measures 4173 mm in length, 1781 mm in width, and stands 1533 mm tall. This gives it a more robust and elevated stance compared to the A3 Sportback. On the other hand, the A3 Sportback, a hatchback, spans a slightly longer length of 4353 mm (max), with a 1816 mm width and a height of 1441 mm. The Junior enjoys a more commanding presence on the road, while the A3 Sportback offers a sleek and aggressive look.

Junior

Engine Options and Performance

The heart of any vehicle is its engine, and both the Junior and the A3 Sportback offer diverse powertrain options. The Junior presents a range of electric and petrol MHEV engines, generating between 136 to 280 HP, with a special emphasis on eco-friendly performance, boasting an electric range of up to 410 km. With a maximum torque of 345 Nm, the Junior ensures a dynamic driving experience.

Meanwhile, the Audi A3 Sportback provides a wider spectrum of power, thanks to its petrol, MHEV, diesel, and plug-in hybrid engines. Power ranges from 116 to an exhilarating 400 HP, allowing for more performance-tuned driving. Particularly notable is the plug-in hybrid variant, which offers an electric range of 139 km, merging efficiency with versatility.

A3 Sportback

Transmission and Drive Scenarios

The Alfa Romeo Junior offers automatic transmissions, with the choice between a reduction gearbox and a dual-clutch automatic, catering to seamless gear shifts and a smoother drive. It supports both front-wheel and all-wheel drive options, allowing drivers to personalize their driving experience.

The Audi A3 Sportback matches this with both manual and dual-clutch automatic transmissions. It also presents the flexibility of front-wheel and all-wheel drive configurations, ensuring optimal grip and control under different driving conditions.

Junior

Fuel Efficiency and Environmental Impact

Fuel efficiency is crucial in today's automotive landscape. The Junior impresses with a consumption rate as low as 4.5 L/100km for its petrol engines and a frugal 15.2 kWh/100km for its electric counterpart. With CO2 emissions starting at 0 g/km, it positions itself as a green option.

Conversely, the A3 Sportback offers competitive consumption figures, starting at 4.8 L/100km for its most efficient petrol MHEV model. Although its CO2 emissions are slightly higher, starting at 6 g/km for the plug-in hybrid, it still maintains a commendable environmental profile.

A3 Sportback

Interior and Capacity

Both vehicles provide seating for five, ensuring ample space for passengers. The Junior has a varying trunk capacity of up to 415 liters, optimizing space for luggage and gear. The A3 Sportback, slightly more compact in storage, offers 380 liters, sufficient for everyday needs and short trips.

Conclusion

In essence, the Alfa Romeo Junior and Audi A3 Sportback cater to slightly different audiences. The Junior, with its SUV attributes and a diverse range of powertrains, leans toward those who seek adventure and eco-commitments. The A3 Sportback, with its multifaceted offerings and sporty appeal, targets drivers looking for performance blended with versatility. Whichever choice you make, both vehicles stand strong, embodying today's automotive advancements brilliantly.

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

Junior

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 Junior is barely cheaper – starting at 26,100 £ , while the Audi A3 Sportback costs 27,000 £ . That’s a price difference of around 900 £.

Fuel consumption also shows a difference: the Audi A3 Sportback uses 1.1 L/100km and is substantially more efficient than the Alfa Romeo Junior with 4.8 L/100km. The difference is about 3.7 L/100km.

As for electric range, the Alfa Romeo Junior offers clearly more range – reaching up to 410 km, about 269 km more than the Audi A3 Sportback.

A3 Sportback

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 offers visibly more power – delivering 400 HP compared to 280 HP. That’s roughly 120 HP more horsepower.

When accelerating from 0 to 100 km/h, the Audi A3 Sportback is considerably quicker – completing the sprint in 3.8 s, while the Alfa Romeo Junior takes 5.9 s. That’s about 2.1 s quicker.

There’s also a difference in torque: the Audi A3 Sportback delivers markedly more torque with 500 Nm compared to 345 Nm. That’s about 155 Nm more.

Junior

Space and Everyday Use:

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

Both vehicles offer seating for 5 people.

In terms of curb weight, Audi A3 Sportback is marginally lighter – 1,360 kg compared to 1,380 kg. The difference is around 20 kg.

Looking at boot space, the Alfa Romeo Junior offers very slightly more boot space – 415 L compared to 380 L. That’s a difference of about 35 L.

When it comes to payload, the Audi A3 Sportback carries somewhat more – 480 kg compared to 420 kg. That’s a difference of about 60 kg.

Who wins the race in the data check?

The Audi A3 Sportback 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 £27,000
A3 Sportback

Audi A3 Sportback

  • Engine Type Petrol, Petrol MHEV, Diesel, Plugin Hybrid
  • Transmission Manuel, Automatic
  • Drive Type Front-Wheel Drive, All-Wheel Drive
  • Power HP 116 - 400 HP
  • Consumption L/100km 1.1 - 9.3 L/100km
  • Electric Range 134 - 141 km
details
Alfa Romeo Junior
Audi A3 Sportback

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Alfa Romeo Junior

The Alfa Romeo Junior captures the essence of Italian design with its sleek lines and compact dimensions, making it an icon of elegance and performance. With a spirited driving experience and a charming retro aesthetic, it appeals to enthusiasts and casual drivers alike. This delightful car embodies the brand's rich heritage while remaining a fun and engaging option for those seeking a unique automotive experience.

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AlfaRomeoJunior-Exterieur
AlfaRomeoJunior-Exterieur
AlfaRomeoJunior-Interieur

Reviews Alfa Romeo Junior

4.8 (8 Reviews)
rate
GMarco
17 Jun 2026, 09:14:42

The Junior's design is more modern, although the three-cylinder leaves me puzzled.

How do you mainly use this car? (optional): Commuter (short/medium distance)
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Jerzy
9 May 2026, 04:07:35

The car is a pleasure to drive — you don't want to get out. The navigation guides excellently, but Polish names are mispronounced. The car doesn't have cornering lights. The matrix headlights are very good.

Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

Audi A3 Sportback

The Audi A3 Sportback wraps premium materials and crisp German design into a practical hatchback package that makes daily driving feel smart rather than showy. It’s nimble in the city, composed on longer trips, and carries just enough swagger to satisfy buyers who want quality without shouting about it.

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Reviews Audi A3 Sportback

4.1 (2 Reviews)
rate

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Audi A3 Sportback

Costs and Consumption
Price
26,100 - 41,600 £
Price
27,000 - 92,900 £
Consumption L/100km
4.8 - 5.4 L/100km
Consumption L/100km
1.1 - 9.3 L/100km
Consumption kWh/100km
15.1 - 17.5 kWh/100km
Consumption kWh/100km
-
Electric Range
344 - 410 km
Electric Range
134 - 141 km
Battery Capacity
-
Battery Capacity
-
co2
0 - 119 g/km
co2
25 - 211 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
Hatchback
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,380 - 1,689 kg
Curb weight
1,360 - 1,685 kg
Trunk capacity
340 - 415 L
Trunk capacity
280 - 380 L
Length
-
Length
-
Width
1,781 mm
Width
1,816 - 1,851 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
390 - 420 kg
Payload
410 - 480 kg

Engine and Performance
Engine Type
Electric, Petrol MHEV
Engine Type
Petrol, Petrol MHEV, Diesel, Plugin Hybrid
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
Reduction Gearbox, Dual-Clutch Automatic
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
146 - 280 HP
Power HP
116 - 400 HP
Acceleration 0-100km/h
5.9 - 9.1 s
Acceleration 0-100km/h
3.8 - 10.1 s
Max Speed
-
Max Speed
-
Torque
230 - 345 Nm
Torque
220 - 500 Nm
Number of Cylinders
3
Number of Cylinders
4 - 5
Power kW
107 - 207 kW
Power kW
85 - 294 kW
Engine capacity
1,199 cm3
Engine capacity
1,498 - 2,480 cm3

General
Model Year
2,024 - 2,025
Model Year
2,025 - 2,026
CO2 Efficiency Class
A, C, D
CO2 Efficiency Class
D, F, E, G, B
Brand
Alfa Romeo
Brand
Audi
What drivetrain options does the Alfa Romeo Junior have?

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