Wondering why people complain that Yaris' cant get good mileage?!

[TheRealEnth]

Im only getting 250-300 on a tank. So that's about 22-27mph if im correct. I drove once super slow and hypermillerish, and i think i still achieved only like 310-320 which is still about 29mpg... What do you guys recommend? Im about to change the spark plugs and air filter, any other ideas?

[Boost Addicted]

Originally Posted by TheRealEnth

Im only getting 250-300 on a tank. So that's about 22-27mph if im correct. I drove once super slow and hypermillerish, and i think i still achieved only like 310-320 which is still about 29mpg... What do you guys recommend? Im about to change the spark plugs and air filter, any other ideas?

Do you get up to speed slowly from a dead stop? Are you trying to keep your RPM's low by upshifting as much as possible? Cause if you're doing these things, THATS whats killing your fuel mileage.

Fuel consumption is all about load... Load can be visually seen if you use a vacuum gauge. High vacuum is low load, low vacuum is high load, and you'd be surprised to see what little usage of your right foot can do to your vacuum levels.

Think about it this way.... You're on the leg press machine starting with your knees at your chest... What takes more energy? Pushing the weight stack away from you, or holding it there? Holding it, right? the quicker you get there, the less energy you use. It would be like doing a slow leg press to the extended leg position, vs. extending your legs as quickly as possible and holding it there.

Stupid analogy, I know, but hopefully you can see how it works. I'm not saying peel away from every stop light, but do NOT be afraid of RPM's. Shift at 3-4K RPM's, cruise at no less than 2K, and get up to speed more quickly. You don't need to be unsafe about it, but I guarantee you'll see a difference in fuel mileage. Oh, and when coming to a stop, keep your car in gear.... Above 1200RPM's (IIRC) IN GEAR while your foot is off the throttle, your injector solenoids shut off... So you're using ZERO fuel.

/rant lol

PS. Air filters are most efficient at 60% of their life. A clean air filter allows only a slightly better flow, but a much less efficient ''cleaning'' of intake air.

[Yaris Hilton]

Changing spark plugs won't increase your mileage or power if you're not getting misfiring, which sets the "Check Engine" light and a trouble code. The original plugs are iridium ones good for 100,000 miles. Save your money.

[STC]

Originally Posted by TheRealEnth

Im only getting 250-300 on a tank. So that's about 22-27mph if im correct. I drove once super slow and hypermillerish, and i think i still achieved only like 310-320 which is still about 29mpg... What do you guys recommend? Im about to change the spark plugs and air filter, any other ideas?

What kind of driving in Miami? Mostly highway or city? Miami driving can be very challenging to get high FE.

I used to live in Miami. All the stop and go driving will kill your FE. If you are driving like Kendall Drive (SW 88th Street) from Dadeland to West Kendall, I can see you averaging around 22-27mpg!

The previous poster, "Boost Addicted" gives you good advice!

Cheers!

[yarr_is]

Too much speeding yo