Jqi, 好几个月前,我曾经答复过同样的问题, 现抄转如下:
Something is very wrong with your Tercel. Check the following:
1) air filter - when did you change it? A dirty and blocked air filter will substantially increase gas consumption.
2) do you change your engine oil regularly, i.e. 6,000 to 7,000 km?
3) spark plugs - when did you change it? You may need a turn-up.
There are other factors that might affect the gas consumption. I suggest you bring your car to a garage (NEVER bring it to Canadian Tire because they will only rip you off)!