All courses › Car licence (class B) › Speed and consumption
Speed and consumption
Air resistance rises sharply with speed, so consumption climbs a lot when you drive fast. Driving at 110 instead of 80 km/h can raise consumption by 20–30 percent. Driving style matters too: look far ahead, use a steady throttle, ease off early before stopping, and avoid needless idling. Correct tyre pressure and little load on the roof also help.
Example
You approach a red light 300 m ahead.
Ease off at once and let the car roll. The light may turn green before you arrive, and you avoid stopping and accelerating again.
A roof box left on all year raises consumption even when empty. Take it off when you do not need it.
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