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Mercedes A Class vs Alfa Romeo Junior comparison

Compare performance (421 HP vs 280 HP), boot space and price (32,600 £ vs 26,100 £ ) at a glance. Find out which car is the better choice for you – Mercedes A Class or Alfa Romeo Junior?

Mercedes A Class vs Alfa Romeo Junior: Key differences

Mercedes A Class

3.6 (2 Reviews)
rate
  • clearly more power
  • considerably more efficient
  • clearly quicker 0–100 km/h
details

Alfa Romeo Junior

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

A Class

Costs and Efficiency:

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

Alfa Romeo Junior is clearly cheaper – starting at 26,100 £ , while the Mercedes A Class costs 32,600 £ . That’s a price difference of around 6,468 £.

Fuel consumption also shows a difference: the Mercedes A Class uses 2.3 L/100km and is considerably more efficient than the Alfa Romeo Junior with 4.8 L/100km. The difference is about 2.5 L/100km.

As for electric range, the Alfa Romeo Junior offers considerably more range – reaching up to 410 km, about 325 km more than the Mercedes A Class.

Junior

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 A Class offers clearly more power – delivering 421 HP compared to 280 HP. That’s roughly 141 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes A Class is clearly quicker – completing the sprint in 3.9 s, while the Alfa Romeo Junior takes 5.9 s. That’s about 2 s quicker.

There’s also a difference in torque: the Mercedes A Class delivers visibly more torque with 500 Nm compared to 345 Nm. That’s about 155 Nm more.

A Class

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 terms of curb weight, Alfa Romeo Junior is very slightly lighter – 1,380 kg compared to 1,440 kg. The difference is around 60 kg.

Looking at boot space, the Alfa Romeo Junior offers slightly more boot space – 415 L compared to 350 L. That’s a difference of about 65 L.

When it comes to payload, the Mercedes A Class carries somewhat more – 485 kg compared to 420 kg. That’s a difference of about 65 kg.

Who wins the race in the data check?

The Mercedes A Class 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 £32,600
A Class

Mercedes A Class

  • Engine Type Petrol MHEV, Diesel, Plugin Hybrid, Petrol
  • Transmission Automatic
  • Drive Type Front-Wheel Drive, All-Wheel Drive
  • Power HP 116 - 421 HP
  • Consumption L/100km 2.3 - 9 L/100km
  • Electric Range 85 km
details

Frequently compared as well

Mercedes A Class
Mercedes B Class
VS
The Mercedes A‑Class is the sporty, tech‑savvy compact that thrills with sharp handling and a slick cockpit, while the Mercedes B‑Class trades a bit of attitude for towering practicality, roomier seats and a more useful boot. Choose the A‑Class if you want driving fun and style; pick the B‑Class if …
Alfa Romeo Junior
Peugeot 2008
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Putting the Alfa Romeo Junior against the Peugeot 2008 highlights a clash of eras: the Junior’s vintage Italian character and driver-focused feel versus the 2008’s modern, practical crossover sensibility. Choose the Junior when you want style, engagement and period charm; choose the 2008 for space, …
Mercedes A Class
Alfa Romeo Junior

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes A Class

The Mercedes A‑Class arrives as a compact charmer that dresses premium materials and a cockpit full of screens in a tidy, city-friendly package, delivering surprising agility and poise. For buyers who want a luxury badge, clever tech and a car that's equally happy in tight streets or on a spirited country run, the A‑Class offers a grown-up feel with a cheeky streak.

details
18C0292_008
18C0292_010
18C0292_042
18C0291_067
18C0122_04

Reviews Mercedes A Class

3.6 (2 Reviews)
rate
Koldo
14 Jul 2026, 15:39:26

It's an elegant and understated car. Excellent material finishes; its two screens are very convenient for driving. Very good acceleration and braking response, great stability and good handling in corners. Good nighttime lighting, a safe, comfortable car and a pleasure to drive and travel in. My car is the A‑Class 200d. Kind regards.

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

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.

details
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

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The Mercedes A‑Class is the sharper, more driver-focused hatch that feels nimble and refined on twisty roads, while the Mercedes GLA trades a bit of agility for SUV practicality with a higher ride height, extra luggage space and a commanding view of the road. Pick the A‑Class for sporty handling, …
Alfa Romeo Junior
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The Alfa Romeo Junior charms with vintage Italian flair, razor-sharp steering and pure analogue drama — it’s for drivers who buy emotion first and practicality maybe later. The Lexus LBX, by contrast, is composed, tech-rich and absurdly sensible: a compact, efficient urban crossover for buyers who …
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Mercedes A Class
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Mercedes A Class
MINI MINI
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Mercedes A Class
Alfa Romeo Junior

Costs and Consumption
Price
32,600 - 66,500 £
Price
26,100 - 41,600 £
Consumption L/100km
2.3 - 9 L/100km
Consumption L/100km
4.8 - 5.4 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
15.1 - 17.5 kWh/100km
Electric Range
85 km
Electric Range
344 - 410 km
Battery Capacity
-
Battery Capacity
-
co2
53 - 205 g/km
co2
0 - 119 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Hatchback
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,440 - 1,695 kg
Curb weight
1,380 - 1,689 kg
Trunk capacity
310 - 350 L
Trunk capacity
340 - 415 L
Length
-
Length
-
Width
1,796 - 1,850 mm
Width
1,781 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
450 - 485 kg
Payload
390 - 420 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel, Plugin Hybrid, Petrol
Engine Type
Electric, Petrol MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Reduction Gearbox, Dual-Clutch Automatic
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
116 - 421 HP
Power HP
146 - 280 HP
Acceleration 0-100km/h
3.9 - 9.7 s
Acceleration 0-100km/h
5.9 - 9.1 s
Max Speed
-
Max Speed
-
Torque
200 - 500 Nm
Torque
230 - 345 Nm
Number of Cylinders
4
Number of Cylinders
3
Power kW
85 - 310 kW
Power kW
107 - 207 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
1,199 cm3

General
Model Year
2025
Model Year
2,024 - 2,025
CO2 Efficiency Class
D, E, B, G
CO2 Efficiency Class
A, C, D
Brand
Mercedes-Benz
Brand
Alfa Romeo
Is the Mercedes A Class offered with different drivetrains?

The Mercedes A Class 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.