I drive my car a lot. I do lot of experiments with speeds while driving. Following are my observations:
- Driving at 60 - 70 km/h gives maximum mileage
- Driving at 70 - 90 km/h gives good mileage
- Driving above 90 km/h gives poor mileage
All the above observations are measured while driving in top gear (5th gear).
I can understand driving at 60 we get maximum mileage but there is not much difference in mileage while driving between 70 - 90 km/h why is it so, can anybody explain this?