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Mazda 3 Sedan vs Mercedes SL Class comparison

Compare performance (186 HP vs 816 HP), boot space and price (25,400 £ vs 112,700 £ ) at a glance. Find out which car is the better choice for you – Mazda 3 Sedan or Mercedes SL Class?

Mazda 3 Sedan vs Mercedes SL Class: Key differences

Mazda 3 Sedan

4.7 (1 Reviews)
rate
  • clearly cheaper
  • substantially more efficient
  • clearly lighter
  • significantly more trunk space
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Mercedes SL Class

  • substantially more power
  • considerably quicker 0–100 km/h
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Here’s where it gets real: The technical differences in detail

3 Sedan

Costs and Efficiency:

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

Mazda 3 Sedan is clearly cheaper – starting at 25,400 £ , while the Mercedes SL Class costs 112,700 £ . That’s a price difference of around 87,256 £.

Fuel consumption also shows a difference: the Mazda 3 Sedan uses 5.5 L/100km and is substantially more efficient than the Mercedes SL Class with 9 L/100km. The difference is about 3.5 L/100km.

SL Class

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 Mercedes SL Class offers substantially more power – delivering 816 HP compared to 186 HP. That’s roughly 630 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes SL Class is considerably quicker – completing the sprint in 2.9 s, while the Mazda 3 Sedan takes 8.1 s. That’s about 5.2 s quicker.

There’s also a difference in torque: the Mercedes SL Class delivers significantly more torque with 1,420 Nm compared to 240 Nm. That’s about 1,180 Nm more.

Space and Everyday Use:

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

Seats: Mazda 3 Sedan offers more seats – 5 vs 4.

In terms of curb weight, Mazda 3 Sedan is clearly lighter – 1,417 kg compared to 1,810 kg. The difference is around 393 kg.

Looking at boot space, the Mazda 3 Sedan offers significantly more boot space – 450 L compared to 240 L. That’s a difference of about 210 L.

When it comes to payload, the Mazda 3 Sedan carries markedly more – 501 kg compared to 375 kg. That’s a difference of about 126 kg.

Who wins the race in the data check?

The Mazda 3 Sedan is decisively ahead 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 £25,400
3 Sedan

Mazda 3 Sedan

  • Engine Type Petrol MHEV
  • Transmission Manual, Automatic
  • Drive Type Front-Wheel Drive
  • Power HP 140 - 186 HP
  • Consumption L/100km 5.5 - 6 L/100km
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Mazda 3 Sedan
Mercedes SL Class

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.

details
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Reviews Mazda 3 Sedan

4.7 (1 Reviews)
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Mercedes SL Class

The Mercedes SL blends timeless elegance with a cheeky sense of occasion, its retractable roof turning any commute into a small celebratory parade. Behind the wheel it behaves like a grown-up sports car that prefers comfort and presence over headline-grabbing bravado, making it a tempting choice for buyers who want to arrive in style.

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15C1119_029
15C1119_120
15C1119_004

Reviews Mercedes SL Class

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

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Mazda 3 Sedan
Mercedes SL Class

Costs and Consumption
Price
25,400 - 34,700 £
Price
112,700 - 219,300 £
Consumption L/100km
5.5 - 6 L/100km
Consumption L/100km
9 - 13.6 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
12 km
Battery Capacity
-
Battery Capacity
-
co2
123 - 137 g/km
co2
206 - 309 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
Roadster
Seats
5
Seats
4
Doors
-
Doors
-
Curb weight
1,417 - 1,468 kg
Curb weight
1,810 - 2,195 kg
Trunk capacity
450 L
Trunk capacity
110 - 240 L
Length
-
Length
-
Width
1,795 mm
Width
1,915 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
482 - 501 kg
Payload
145 - 375 kg

Engine and Performance
Engine Type
Petrol MHEV
Engine Type
Petrol MHEV, Petrol, Plug-in Hybrid
Transmission
Manual, Automatic
Transmission
Automatic
Transmission Detail
Manual Gearbox, Automatic Gearbox
Transmission Detail
Automatic Gearbox
Drive Type
Front-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
140 - 186 HP
Power HP
435 - 816 HP
Acceleration 0-100km/h
8.1 - 9.8 s
Acceleration 0-100km/h
2.9 - 4.7 s
Max Speed
-
Max Speed
-
Torque
238 - 240 Nm
Torque
500 - 1,420 Nm
Number of Cylinders
4
Number of Cylinders
4 - 8
Power kW
103 - 137 kW
Power kW
320 - 600 kW
Engine capacity
1,998 - 2,488 cm3
Engine capacity
1,991 - 3,982 cm3

General
Model Year
2026
Model Year
2025
CO2 Efficiency Class
D, E
CO2 Efficiency Class
G
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.