- The fuel efficiency reading from car dashboard may no be accurate. You may want to do your own profiling.
- Always reset your distance meter to zero after you top up the petrol.
- Enter the mileage when the fuel gauge drop to 3/4 tank. This value may vary for every tank due to how full the previous top up was and different traffic condition.
- Always check if the petrol unit price has change.
- Enter the estimated distance to custom. It is even better if you check the actual driving distance using Map Apps. If you are making a detour, you need to add in the detour distance.
Factors affecting the accuracy of calculated top up amount
- Fuel efficiency may vary according to actual traffic condition.
- Fuel gauge is usually very sensitive at 3/4 tank and a small distance travelled may cause it to drop drastically.
- Fuel gauge could be sensitive to slope especially when the vehicle is travelling up or down slope.
- Unexpected traffic jam on the way to Singapore custom may accelerate the drop of fuel gauge below 3/4 tank.
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