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Mazda 3 Sedan vs Mercedes A Class Saloon comparison

Compare performance (186 HP vs 320 HP), boot space and price (25,000 £ vs 32,700 £ ) at a glance. Find out which car is the better choice for you – Mazda 3 Sedan or Mercedes A Class Saloon?

Mazda 3 Sedan vs Mercedes A Class Saloon: Key differences

Mazda 3 Sedan

4.7 (1 Reviews)
rate
  • noticeably cheaper
  • barely lighter
  • moderately more trunk space
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Mercedes A Class Saloon

  • significantly more power
  • considerably more efficient
  • clearly quicker 0–100 km/h
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By Achim Sedelmaier

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

3 Sedan

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.

Mazda 3 Sedan is noticeably cheaper – starting at 25,000 £ , while the Mercedes A Class Saloon costs 32,700 £ . That’s a price difference of around 7,744 £.

Fuel consumption also shows a difference: the Mercedes A Class Saloon uses 0.7 L/100km and is considerably more efficient than the Mazda 3 Sedan with 5.5 L/100km. The difference is about 4.8 L/100km.

A Class Saloon

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 significantly more power – delivering 320 HP compared to 186 HP. That’s roughly 134 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes A Class Saloon is clearly quicker – completing the sprint in 4.8 s, while the Mazda 3 Sedan takes 8.1 s. That’s about 3.3 s quicker.

There’s also a difference in torque: the Mercedes A Class Saloon delivers significantly more torque with 450 Nm compared to 240 Nm. That’s about 210 Nm more.

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, Mazda 3 Sedan is barely lighter – 1,420 kg compared to 1,450 kg. The difference is around 30 kg.

Looking at boot space, the Mazda 3 Sedan offers moderately more boot space – 450 L compared to 395 L. That’s a difference of about 55 L.

When it comes to payload, the Mercedes A Class Saloon carries very slightly more – 490 kg compared to 481 kg. That’s a difference of about 9 kg.

Who wins the race in the data check?

The Mercedes A Class Saloon 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 £32,700
A Class Saloon

Mercedes A Class Saloon

  • Engine Type : Plugin Hybrid, Petrol MHEV, Diesel
  • Transmission : Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 116 - 320 HP
  • Consumption L/100km : 0.7 - 8.1 L/100km
  • Electric Range : 88 km
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Frequently compared as well

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Mazda 3 Sedan
Mercedes A Class Saloon

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mazda 3 Sedan

The Mazda 3 Sedan dresses like a compact premium car, with sculpted lines and an interior that punches well above its class. It rewards drivers with eager handling and a composed, comfortable ride that turns routine runs into something a bit more enjoyable — proof that style and substance can share the same key.

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Reviews Mazda 3 Sedan

4.7 (1 Reviews)
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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

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Mazda 3 Sedan
Mercedes A Class Saloon

Costs and Consumption
Price
25,000 - 34,200 £
Price
32,700 - 55,900 £
Consumption L/100km
5.5 - 6.1 L/100km
Consumption L/100km
0.7 - 8.1 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
88 km
Battery Capacity
-
Battery Capacity
12.9 kWh
co2
123 - 135 g/km
co2
16 - 184 g/km
Fuel tank capacity
-
Fuel tank capacity
35 - 51 L

Dimensions and Body
Body Type
Sedan
Body Type
Sedan
Seats
5
Seats
5
Doors
-
Doors
4
Curb weight
1,420 - 1,492 kg
Curb weight
1,450 - 1,705 kg
Trunk capacity
450 L
Trunk capacity
345 - 395 L
Length
-
Length
4,558 - 4,570 mm
Width
1,795 mm
Width
1,796 mm
Height
-
Height
1,413 - 1,429 mm
Max trunk capacity
-
Max trunk capacity
-
Payload
467 - 481 kg
Payload
475 - 490 kg

Engine and Performance
Engine Type
Petrol MHEV
Engine Type
Plugin Hybrid, Petrol MHEV, Diesel
Transmission
Manuel, Automatic
Transmission
Automatic
Transmission Detail
Manual Gearbox, Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
Front-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
140 - 186 HP
Power HP
116 - 320 HP
Acceleration 0-100km/h
8.1 - 9.8 s
Acceleration 0-100km/h
4.8 - 9.9 s
Max Speed
-
Max Speed
206 - 250 km/h
Torque
238 - 240 Nm
Torque
200 - 450 Nm
Number of Cylinders
4
Number of Cylinders
4
Power kW
103 - 137 kW
Power kW
85 - 235 kW
Engine capacity
1,998 - 2,488 cm3
Engine capacity
1,332 - 1,991 cm3

General
Model Year
2025
Model Year
2,024 - 2,025
CO2 Efficiency Class
D
CO2 Efficiency Class
B, D, G, E
Brand
Mazda
Brand
Mercedes-Benz
What drivetrain options does the Mazda 3 Sedan have?

The Mazda 3 Sedan is offered with Front-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.