The fuel consumption of the Harley-Davidson Road King varies depending on the Model Year.

For the 2022 model, it is 5.47 litres/100 km (18.3 km/l or 43.00 mpg).

In 2018, the fuel consumption was 5.60 litres/100 km (17.9 km/l or 42.00 mpg).

From 1993 onwards, it was around 44 mpg (18 km/l).

Several factors can affect the fuel consumption of the Road King.

The engine size and type play a significant role.

The 2022 and 2018 ModelS have a 1746.0 ccm V2, four-stroke engine with specific power and torque outputs.

The engine details, such as the Milwaukee-Eight? 107 and integrated oil-cooler, can also influence fuel efficiency.

The fuel system and control, like Electronic Sequential Port Fuel Injection and Double Overhead Cams/Twin Cam (DOHC), contribute to the consumption rate.

Transmission type, final drive, and clutch settings can impact how the engine uses fuel.

The weight of the bike, including its dry weight and weight with oil and gas, affects fuel consumption.

Riding style and conditions also matter.

Aggressive acceleration and frequent stops increase consumption.

Maintaining proper tire pressure and regular servicing of the bike can help optimize fuel economy.

Keeping the air filter clean and ensuring the engine is in good condition are important for efficient fuel usage.

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