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Mazda 6 Saloon vs Mercedes G-Class comparison

Compare performance (258 HP vs 605 HP), boot space and price (38,500 £ vs 106,600 £ ) at a glance. Find out which car is the better choice for you – Mazda 6 Saloon or Mercedes G-Class?

Mazda 6 Saloon vs Mercedes G-Class: Key differences

Mazda 6 Saloon

  • considerably cheaper
  • significantly more efficient
  • moderately more electric range
  • clearly lighter
details

Mercedes G-Class

  • considerably more power
  • significantly quicker 0–100 km/h
  • substantially more trunk space
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By Achim Sedelmaier

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

6 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.

Mazda 6 Saloon is considerably cheaper – starting at 38,500 £ , while the Mercedes G-Class costs 106,600 £ . That’s a price difference of around 68,105 £.

In terms of energy consumption, the Mazda 6 Saloon is significantly more efficient: consuming 16.5 kWh/100km compared to 28 kWh/100km for the Mercedes G-Class. That’s a difference of about 11.5 kWh/100km.

As for electric range, the Mazda 6 Saloon offers moderately more range – reaching up to 552 km, about 73 km more than the Mercedes G-Class.

G-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 G-Class offers considerably more power – delivering 605 HP compared to 258 HP. That’s roughly 347 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes G-Class is significantly quicker – completing the sprint in 4.4 s, while the Mazda 6 Saloon takes 7.6 s. That’s about 3.2 s quicker.

There’s also a difference in torque: the Mercedes G-Class delivers clearly more torque with 1,164 Nm compared to 320 Nm. That’s about 844 Nm more.

Space and Everyday Use:

Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.

Both vehicles offer seating for 5 people.

In terms of curb weight, Mazda 6 Saloon is clearly lighter – 2,027 kg compared to 2,485 kg. The difference is around 458 kg.

Looking at boot space, the Mercedes G-Class offers substantially more boot space – 640 L compared to 336 L. That’s a difference of about 304 L.

When it comes to payload, the Mercedes G-Class carries considerably more – 715 kg compared to 360 kg. That’s a difference of about 355 kg.

Who wins the race in the data check?

The Mercedes G-Class is clearly superior 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 £106,600
G-Class

Mercedes G-Class

  • Engine Type Petrol MHEV, Diesel MHEV, Electric
  • Transmission Automatic
  • Drive Type All-Wheel Drive
  • Power HP 387 - 605 HP
  • Consumption L/100km 8.7 - 14.7 L/100km
  • Consumption kWh/100km 28 kWh/100km
  • Electric Range 479 km
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mazda 6 Saloon

The Mazda6 saloon feels like the sensible yet stylish choice for buyers who want a car that drives with poise and looks sharper than its badge suggests. It mixes engaging handling, a refined cabin and everyday practicality without shouting for attention — perfect for those who prefer understated class with a wink.

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The G-Class, often called the G‑Wagen, is a blocky icon that blends unapologetic off-road prowess with a plush, modern cabin, announcing your arrival before you even step out. It’s equally at home crawling over rocks or cruising city streets, and owning one feels like adopting a very expensive, very capable personality.

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Mercedes G-Class

Costs and Consumption
Price
38,500 - 41,600 £
Price
106,600 - 171,000 £
Consumption L/100km
-
Consumption L/100km
8.7 - 14.7 L/100km
Consumption kWh/100km
16.5 - 16.6 kWh/100km
Consumption kWh/100km
28 kWh/100km
Electric Range
479 - 552 km
Electric Range
479 km
Battery Capacity
-
Battery Capacity
-
co2
0 g/km
co2
0 - 336 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
Off-Roader
Seats
5
Seats
5
Doors
5
Doors
-
Curb weight
2,027 - 2,028 kg
Curb weight
2,485 - 3,085 kg
Trunk capacity
336 L
Trunk capacity
640 L
Length
4,921 mm
Length
-
Width
1,890 mm
Width
1,931 - 1,984 mm
Height
1,491 mm
Height
-
Max trunk capacity
1,074 L
Max trunk capacity
-
Payload
359 - 360 kg
Payload
115 - 715 kg

Engine and Performance
Engine Type
Electric
Engine Type
Petrol MHEV, Diesel MHEV, Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Reduction Gearbox
Transmission Detail
Automatic Gearbox, Reduction Gearbox
Drive Type
Rear-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
245 - 258 HP
Power HP
387 - 605 HP
Acceleration 0-100km/h
7.6 - 7.8 s
Acceleration 0-100km/h
4.4 - 5.8 s
Max Speed
175 km/h
Max Speed
-
Torque
320 Nm
Torque
760 - 1,164 Nm
Number of Cylinders
-
Number of Cylinders
6 - 8
Power kW
180 - 190 kW
Power kW
285 - 445 kW
Engine capacity
-
Engine capacity
2,989 - 3,982 cm3

General
Model Year
2025
Model Year
2,025 - 2,026
CO2 Efficiency Class
A
CO2 Efficiency Class
G, A
Brand
Mazda
Brand
Mercedes-Benz
What drive types are available for the Mazda 6 Saloon?

The Mazda 6 Saloon is available as Rear-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.