Mercedes vehicles' fuel consumption varies depending on several factors.

The engine type, size, and technology significantly influence it. For example, smaller and more efficient engines typically consume less fuel.

The driving conditions also matter. City driving with frequent stops and starts usually leads to higher fuel consumption compared to smooth highway cruising.

The vehicle's weight and aerodynamics play a role too. Heavier cars and those with less streamlined designs consume more fuel.

The way you drive also affects consumption. Aggressive acceleration and braking waste fuel, while maintaining a steady speed and anticipating traffic saves it.

To get an accurate idea of the fuel consumption of a specific Mercedes model, it's best to refer to the manufacturer's specifications and fuel economy ratings. You can also check online reviews and owner experiences for real-world data.

Additionally, keeping your vehicle well-maintained, such as proper tire inflation and regular servicing, can improve fuel efficiency and reduce consumption.