Fuel Economy

[07WYarisRS]

Keep in mind when the tets are done for in town and hwy mileage they are done in a strait time with few cold starts and shutting the car off. if you fill up you car and drove it intown for a full tank of fuel without shutting it off you will easily hit the toyota mileage claims. Same with the hwy. If I fill the tank and drive it until empty with no stops or cold starts I can easily get toyota's cliamed mileage or better.

So much depends on the driving style, when you drive, where you drive and how often you start your car.
During the week our mileage sucks because the is driven 5 minutes from the house, at lunch the wife drives home, an hour later she drives back, then home again. 4 cold starts = 4 cold 5 minute drives. The car barely gets up to normal operating temps before it's parked again and this KILLS the fuel economy. but it's a far cry better then our truck was LOL.
The more short trips or in town the worse the mileage will be.


Also I get FAR better mileage driving then my wife does and we both follow the posted speed limits most of the time.
The difference is I tend to accelerate slower and coast longer, where she uses the brakes a lot more and has a heavier foot. When she drives the car is shifting aprox 500 rpm higher then when I drive.
Also the speeds you drive on the hwy make a huge difference. Drive 100kph and you will get better mileage them driving 120kph.

There are a few things you can do to improve the mileage as well. The biggest difference for our car was switching the fluids over to synthetics
Amsoil 0w-30 engine oil and Amsoil ATF. I can get crazy mileage (over 50mpg) if i drive on the hwy and keep it at 100-105kph and that's with an auto and car full of camping gear.
Do not over inflate the tires... so many people do this and think that it helps, follow the mfg's recommended tire pressure, it's on the inside edge of the driver door.