Car is consuming twice as much petrol

[ehtisham.hussain]

I have a Toyota Corolla GLI 2014 1300cc. It shows an average of 10.5 km/L. My daily commute is roughly 20kms. So in a month, I travel close to 450kms.

By my calculations, my monthly fuel consumption should be 50 Liters. But, it is easily 80 Liters (based on several month's data). Can the car's fuel consumption meter lie? I have made sure the petrol is not being stolen in the parking lot (checked multiple times).

[Xulfiqar]

Fuel usage is not a fixed value as you are assuming it to be, driving style, being stuck in traffic too many cold starts etc all add up to extra fuel use

The little gauge you have is a moving average. It will suddenly change if you take a longer trip.

[engnr.mubashir]

Average indicator is big lie try calculating manually.

[pwuser147983858371]

Best method is always divide number of kilometer driven by fuel used. Km/L. Many things can disturb fuel avg like driving style, fuel and car's own mechanical condition.

[hash4u]

kindly double check avg using top up to top up method
but use the same pump...same filling nozzle

on most pumps my top up avg is 1km less then whats on meter..if meter shows 12...actual is 11
pumps stealing fuel difference can go to 2km/ltr
now i hv a specific pump
with specific nozzle
and difference is only 0.5

Also reset avg meter after every top up

[Massive_One]

now i hv a specific pumpwith specific nozzleand difference is only 0.5

what ? specific nozzle ... does that even make a difference ? how can we check that ?

[hash4u]

hit and trial bro
i have literally topped up my car from all petrol pumps near or around my house
then tried different filling points at the better pumps

[capsat]

someone is stealing fuel from your petrol tank.