Hey Pakwheelers,
I have a Toyota Corolla 1.3 2013 model. It was giving an average of 14KM/L local however while checking the battery fluid level, I mistakenly reset the ECU, after that I have run it over 300KM local but the mileage does't seem to go above 8.5KM/L. I did notice that it keeps getting better, for example right after the reset it started at 6KM/L and is gradually increasing but how long before it goes back to normal? And what's the reason behind this?
I had heard that resetting the ECU could actually increase the fuel efficiency but things seem to be going in the opposite direction with this car.
Many thanks!