Just got a 2006 Vitz.
I have noted the following:
Smoke at engine startup!
Knocking some times... rare but happens...
Now the thing is the person I got it from has already had the following done from Toyota(Isb):
Throttle body clean
Air Filter is fine
somebody advised 1:3 ratio hi octane to super ... have not tried that yet!
Dont know how much mileage i am getting as yet... but seems to be around 14KM/lit in city with AC.
Can anyone advise me as to what can be done to make performance better and get rid of smoke?