Guys who from is using Vitz 2008 1.0 ?
Let me know what is your fuel average ? And do tell me how do you calculate it ? What is the Hi Octane/ Supreme ratio ? Tire Size as well (What if the tire is not stock profile)
My car is giving in my 10-11 Km/L in Islamabad city without AC. and all i drove was from Sector G6 to Airport in night after 12 am when whole Islamabad is sleeping. With very light foot. not more than 100 km/h speed. Besides my car has an extra ECO function. The car goes on battery when you stop on signal or somewhere, and starts without effecting the lights, music system 
My tire size is 185/70/14. Which is wider than the orignal size of Vitz 20 mm.
Denso Spark Plugs. Silver tip.
Air filter is clean.
CAT removed.
Checked the computer, all sensor codes are fine.
Throttle cleaned.
Gear Oil i did not changed, because its fine according to the mechnicmy car geniune meter was 60,000 km when it came from Japan.
So kindly assist me. Specially if someone is from Islamabad !
Some Vitz users are saying it should give atleast 13 km/L WITH AC in city like islamabad. While some says the new Vitz will just give 11km/L.
I dont know what to do
When everyone is giving me inaccurate readings on mileage issue.