How much does fuel consumption decrease if you reduce your speed from 110 km/h to 90 km/h?

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How much does fuel consumption decrease if you reduce your speed from 110 km/h to 90 km/h?

Reducing speed from 110 km/h to 90 km/h decreases fuel consumption by 20%.

To minimise fuel consumption, it is very important that you not drive at excessive speeds. The faster you drive, the more air resistance there is. This leads to an increase in fuel consumption.

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