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Mazda 3 Sedan vs Mercedes GLC comparison

Compare performance (186 HP vs 472 HP), boot space and price (25,000 £ vs 50,300 £ ) at a glance. Find out which car is the better choice for you – Mazda 3 Sedan or Mercedes GLC?

Mazda 3 Sedan vs Mercedes GLC: Key differences

Mazda 3 Sedan

4.7 (1 Reviews)
rate
  • considerably cheaper
  • markedly lighter
details

Mercedes GLC

4.4 (12 Reviews)
rate
  • considerably more power
  • significantly more efficient
  • clearly quicker 0–100 km/h
  • visibly 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

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 considerably cheaper – starting at 25,000 £ , while the Mercedes GLC costs 50,300 £ . That’s a price difference of around 25,350 £.

Fuel consumption also shows a difference: the Mercedes GLC uses 1.6 L/100km and is significantly more efficient than the Mazda 3 Sedan with 5.5 L/100km. The difference is about 3.9 L/100km.

GLC

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 GLC offers considerably more power – delivering 472 HP compared to 186 HP. That’s roughly 286 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes GLC is clearly quicker – completing the sprint in 4.2 s, while the Mazda 3 Sedan takes 8.1 s. That’s about 3.9 s quicker.

There’s also a difference in torque: the Mercedes GLC delivers clearly more torque with 750 Nm compared to 240 Nm. That’s about 510 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 markedly lighter – 1,420 kg compared to 1,985 kg. The difference is around 565 kg.

Looking at boot space, the Mercedes GLC offers visibly more boot space – 620 L compared to 450 L. That’s a difference of about 170 L.

When it comes to payload, the Mercedes GLC carries somewhat more – 575 kg compared to 481 kg. That’s a difference of about 94 kg.

Who wins the race in the data check?

The Mercedes GLC 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 £50,300
GLC

Mercedes GLC

  • Engine Type : Diesel MHEV, Plugin Hybrid, Petrol MHEV
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive
  • Power HP : 186 - 472 HP
  • Consumption L/100km : 1.6 - 9.4 L/100km
  • Electric Range : 122 - 128 km
details

Frequently compared as well

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Mazda 3 Sedan
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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 GLC

The Mercedes GLC blends quiet refinement with premium materials to create a comfortable, modern cabin that feels more upscale than its size might suggest. It delivers composed handling and confident on-road manners while offering practical versatility and a strong suite of driver assistance and infotainment features.

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Reviews Mercedes GLC

4.4 (12 Reviews)
rate
Zede
10 May 2026, 20:12:35

Too expensive! To justify it with technology that's equal or inferior.

Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Marek
2 Jan 2026, 18:32:30

There’s something about a Mercedes — you have to take it for a spin to feel it and understand why it’s special.

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

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Mazda 3 Sedan
Mercedes GLC

Costs and Consumption
Price
25,000 - 34,200 £
Price
50,300 - 82,100 £
Consumption L/100km
5.5 - 6.1 L/100km
Consumption L/100km
1.6 - 9.4 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
122 - 128 km
Battery Capacity
-
Battery Capacity
-
co2
123 - 135 g/km
co2
41 - 214 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,420 - 1,492 kg
Curb weight
1,985 - 2,400 kg
Trunk capacity
450 L
Trunk capacity
390 - 620 L
Length
-
Length
-
Width
1,795 mm
Width
1,890 - 1,920 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
467 - 481 kg
Payload
475 - 575 kg

Engine and Performance
Engine Type
Petrol MHEV
Engine Type
Diesel MHEV, Plugin Hybrid, Petrol MHEV
Transmission
Manuel, Automatic
Transmission
Automatic
Transmission Detail
Manual Gearbox, Automatic Gearbox
Transmission Detail
Automatic Gearbox
Drive Type
Front-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
140 - 186 HP
Power HP
186 - 472 HP
Acceleration 0-100km/h
8.1 - 9.8 s
Acceleration 0-100km/h
4.2 - 9 s
Max Speed
-
Max Speed
-
Torque
238 - 240 Nm
Torque
380 - 750 Nm
Number of Cylinders
4
Number of Cylinders
4 - 6
Power kW
103 - 137 kW
Power kW
137 - 347 kW
Engine capacity
1,998 - 2,488 cm3
Engine capacity
1,993 - 2,999 cm3

General
Model Year
2025
Model Year
2,025 - 2,026
CO2 Efficiency Class
D
CO2 Efficiency Class
D, B, E, F, 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.