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Mercedes A Class Saloon vs smart #3 comparison

Compare performance (320 HP vs 272 HP), boot space and price (32,700 £ vs 42,000 £ ) at a glance. Find out which car is the better choice for you – Mercedes A Class Saloon or smart #3?

Mercedes A Class Saloon vs smart #3: Key differences

Mercedes A Class Saloon

  • markedly cheaper
  • moderately more power
  • visibly quicker 0–100 km/h
  • visibly lighter
  • marginally more trunk space
details

smart #3

5 (1 Reviews)
rate
  • substantially more electric range
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 Saloon

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.

Mercedes A Class Saloon is markedly cheaper – starting at 32,700 £ , while the smart #3 costs 42,000 £ . That’s a price difference of around 9,270 £.

As for electric range, the smart #3 offers substantially more range – reaching up to 455 km, about 367 km more than the Mercedes A Class Saloon.

#3

Engine and Performance:

Power, torque and acceleration say a lot about how a car feels on the road. This is where you see which model delivers more driving dynamics.

When it comes to engine power, the Mercedes A Class Saloon offers moderately more power – delivering 320 HP compared to 272 HP. That’s roughly 48 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes A Class Saloon is visibly quicker – completing the sprint in 4.8 s, while the smart #3 takes 5.8 s. That’s about 1 s quicker.

There’s also a difference in torque: the Mercedes A Class Saloon delivers slightly more torque with 450 Nm compared to 384 Nm. That’s about 66 Nm more.

A Class Saloon

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, Mercedes A Class Saloon is visibly lighter – 1,450 kg compared to 1,810 kg. The difference is around 360 kg.

Looking at boot space, the Mercedes A Class Saloon offers marginally more boot space – 395 L compared to 370 L. That’s a difference of about 25 L.

When it comes to payload, the Mercedes A Class Saloon carries very slightly more – 490 kg compared to 450 kg. That’s a difference of about 40 kg.

Who wins the race in the data check?

The smart #3 stands out in the key areas 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.

£41,991
#3

smart #3

  • Engine Type : Electric
  • Transmission : Automatic
  • Drive Type : Rear-Wheel Drive
  • Power HP : 272 HP
  • Consumption kWh/100km : 16.3 kWh/100km
  • Electric Range : 455 km
details

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Mercedes A Class Saloon
smart #3

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes A Class Saloon

The Mercedes A‑Class Saloon blends compact practicality with premium flair, wrapping a surprisingly spacious interior in a slick, modern package that feels more grown-up than its hatchback sibling. It’s an ideal choice for city drivers who want Mercedes polish and cutting-edge tech without the ostentation of a larger saloon, and it even manages to make the daily commute feel a little bit special.

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Reviews Mercedes A Class Saloon

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

smart #3

The Smart #3 turns the brand's cheeky city-car attitude into a grown-up compact SUV, pairing sleek styling with a surprisingly roomy, well-made interior. It's a brilliant pick for buyers who want electric ease without dullness — practical enough for daily life, but still lively enough to make parking and grocery runs feel a little fun.

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Reviews smart #3

5 (1 Reviews)
rate
Ronny
16 Oct 2025, 13:10:59

Handsome design, packed with advanced driver‑assist technology and stellar performance — all at an attractive price. Highly recommended, this car!

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Mercedes A Class Saloon
smart #3

Costs and Consumption
Price
32,700 - 55,900 £
Price
42,000 £
Consumption L/100km
0.7 - 8.1 L/100km
Consumption L/100km
-
Consumption kWh/100km
-
Consumption kWh/100km
16.3 kWh/100km
Electric Range
88 km
Electric Range
455 km
Battery Capacity
12.9 kWh
Battery Capacity
-
co2
16 - 184 g/km
co2
0 g/km
Fuel tank capacity
35 - 51 L
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
SUV
Seats
5
Seats
5
Doors
4
Doors
-
Curb weight
1,450 - 1,705 kg
Curb weight
1,810 kg
Trunk capacity
345 - 395 L
Trunk capacity
370 L
Length
4,558 - 4,570 mm
Length
-
Width
1,796 mm
Width
1,844 mm
Height
1,413 - 1,429 mm
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
475 - 490 kg
Payload
450 kg

Engine and Performance
Engine Type
Plugin Hybrid, Petrol MHEV, Diesel
Engine Type
Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Reduction Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive
Power HP
116 - 320 HP
Power HP
272 HP
Acceleration 0-100km/h
4.8 - 9.9 s
Acceleration 0-100km/h
5.8 s
Max Speed
206 - 250 km/h
Max Speed
-
Torque
200 - 450 Nm
Torque
384 Nm
Number of Cylinders
4
Number of Cylinders
-
Power kW
85 - 235 kW
Power kW
200 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
-

General
Model Year
2,024 - 2,025
Model Year
2025
CO2 Efficiency Class
B, D, G, E
CO2 Efficiency Class
A
Brand
Mercedes-Benz
Brand
smart
What drivetrain options does the Mercedes A Class Saloon have?

The Mercedes A Class Saloon is available as 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.