At what speed is fuel consumption in a car minimal?


April 11, 2022, 14:04 | Auto

Note to drivers.

At what speed is fuel consumption in a car minimal

In the conditions of a constant increase in fuel prices, the issue of fuel economy remains relevant for Ukrainian motorists. There are various ways to reduce gasoline consumption, and one of them is the selection of the optimal driving speed, informs Ukr.Media.

It has been proven in practice that fuel consumption and speed are related. The only difficulty is how to determine at what speed the car's fuel consumption will be minimized. It is not possible to choose an average value that will suit absolutely every car, since the type of vehicle, its condition and the driver's driving style must also be taken into account.

However, in any case, the fuel consumption of each car increases significantly during braking and acceleration. That is why when driving on the highway, cars (usually) consume an order of magnitude less fuel than when driving in the city. Fuel consumption increases even more if a lower gear was set at the time of braking or acceleration. But the least gasoline (or diesel fuel) will be consumed at low revolutions in high gear.

Engines in cars are designed for certain speeds, temperatures and revolutions. When the car begins to move at high speed, the engine begins to work outside the optimal range, which ultimately leads to increased fuel consumption. If we consider modern budget cars, the optimal speed regime for them is 60-80 km/h.

According to a study conducted with the funding of the US Department of Energy, as the speed of movement increases, fuel consumption in a car increases as follows : at 60 mph (96 km/h) — by 3%, at 65 mph (104.6 km/h) — by 8%, at 70 mph (112.6 km/h) — by 17% , 75 miles per hour (120.7 km/h) by 23%, 80 miles per hour (128.76 km/h) by 28%.


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