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Mazda 3 Sedan vs Mercedes CLA Coupe comparison

Compare performance (186 HP vs 354 HP), boot space and price (25,000 £ vs 39,600 £ ) at a glance. Find out which car is the better choice for you – Mazda 3 Sedan or Mercedes CLA Coupe?

Mazda 3 Sedan vs Mercedes CLA Coupe: Key differences

Mazda 3 Sedan

4.7 (1 Reviews)
rate
  • substantially cheaper
  • somewhat lighter
  • barely more trunk space
details

Mercedes CLA Coupe

4.8 (2 Reviews)
rate
  • clearly more power
  • somewhat more efficient
  • substantially quicker 0–100 km/h
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

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 substantially cheaper – starting at 25,000 £ , while the Mercedes CLA Coupe costs 39,600 £ . That’s a price difference of around 14,659 £.

Fuel consumption also shows a difference: the Mercedes CLA Coupe uses 4.9 L/100km and is somewhat more efficient than the Mazda 3 Sedan with 5.5 L/100km. The difference is about 0.6 L/100km.

CLA Coupe

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 CLA Coupe offers clearly more power – delivering 354 HP compared to 186 HP. That’s roughly 168 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes CLA Coupe is substantially quicker – completing the sprint in 4.9 s, while the Mazda 3 Sedan takes 8.1 s. That’s about 3.2 s quicker.

There’s also a difference in torque: the Mercedes CLA Coupe delivers substantially more torque with 515 Nm compared to 240 Nm. That’s about 275 Nm more.

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, Mazda 3 Sedan is somewhat lighter – 1,420 kg compared to 1,695 kg. The difference is around 275 kg.

Looking at boot space, the Mazda 3 Sedan offers barely more boot space – 450 L compared to 405 L. That’s a difference of about 45 L.

When it comes to payload, the Mazda 3 Sedan carries marginally more – 481 kg compared to 455 kg. That’s a difference of about 26 kg.

Who wins the race in the data check?

The Mercedes CLA Coupe 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 £39,600
CLA Coupe

Mercedes CLA Coupe

  • Engine Type : Electric, Petrol MHEV
  • Transmission : Automatic
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive, Front-Wheel Drive
  • Power HP : 156 - 354 HP
  • Consumption L/100km : 4.9 - 5.3 L/100km
  • Consumption kWh/100km : 12.2 - 12.6 kWh/100km
  • Electric Range : 541 - 791 km
details

Frequently compared as well

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Mazda 3 Sedan
Mercedes CLA Coupe

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)
rate

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

Mercedes CLA Coupe

The Mercedes CLA Coupe cuts a rakish silhouette that blends sporty coupe lines with everyday practicality, giving style-minded buyers a premium image without shouting. Inside it feels more luxurious than its size suggests, with a slick cabin, intuitive tech and a composed ride — the kind of car that parties in the city and still shows up polished on Sunday morning.

details
19C0225_069
19C0225_068
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19C0225_044

Reviews Mercedes CLA Coupe

4.8 (2 Reviews)
rate
marco
12 Mar 2026, 18:44:45

A car with a unique line — the shooting brake finally gets a sporty rear and a roomy trunk.

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Dejf
18 Dec 2025, 14:59:40

Nice efficient car. Like it

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

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Mazda 3 Sedan
Mercedes CLA Coupe

Costs and Consumption
Price
25,000 - 34,200 £
Price
39,600 - 59,300 £
Consumption L/100km
5.5 - 6.1 L/100km
Consumption L/100km
4.9 - 5.3 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
12.2 - 12.6 kWh/100km
Electric Range
-
Electric Range
541 - 791 km
Battery Capacity
-
Battery Capacity
58 kWh
co2
123 - 135 g/km
co2
0 - 120 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
Coupe
Seats
5
Seats
5
Doors
-
Doors
4
Curb weight
1,420 - 1,492 kg
Curb weight
1,695 - 2,135 kg
Trunk capacity
450 L
Trunk capacity
405 L
Length
-
Length
4,723 mm
Width
1,795 mm
Width
1,855 mm
Height
-
Height
1,468 mm
Max trunk capacity
-
Max trunk capacity
-
Payload
467 - 481 kg
Payload
430 - 455 kg

Engine and Performance
Engine Type
Petrol MHEV
Engine Type
Electric, Petrol MHEV
Transmission
Manuel, Automatic
Transmission
Automatic
Transmission Detail
Manual Gearbox, Automatic Gearbox
Transmission Detail
Reduction Gearbox, Dual-Clutch Automatic
Drive Type
Front-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive, Front-Wheel Drive
Power HP
140 - 186 HP
Power HP
156 - 354 HP
Acceleration 0-100km/h
8.1 - 9.8 s
Acceleration 0-100km/h
4.9 - 8.8 s
Max Speed
-
Max Speed
210 km/h
Torque
238 - 240 Nm
Torque
280 - 515 Nm
Number of Cylinders
4
Number of Cylinders
4
Power kW
103 - 137 kW
Power kW
115 - 260 kW
Engine capacity
1,998 - 2,488 cm3
Engine capacity
1,499 cm3

General
Model Year
2025
Model Year
2,025 - 2,026
CO2 Efficiency Class
D
CO2 Efficiency Class
A, C, D
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.