Fuel Economy - Toyota Yaris Forums

BailOut · 09-11-2007, 05:51 PM

Although every change I've made added to my MPG numbers by far and away the largest item was FAS. If the engine isn't running it isn't using fuel. That's as MPG-friendly as it gets.

To give you an example of how FAS works for me let me tell you how I drive home through my neighborhood. Keep in mind that the higher tire pressures I run really help with decreasing rolling resistance, so I can coast much farther without losing much speed than someone running their tires at 32 PSI.

I've already been FAS'ing long before my exit from the highway, so when I get to the bottom of the off-ramp I brake at the light, which is usually red. I wait for the traffic to pass and once I see an opening I start the engine and lightly accelerate to the speed limit of 45 MPH, unless the next light a short distance away is red in which case I only accelerate to 10 MPH and then FAS again.

Once I reach 45 MPH I FAS and coast the next 3/8 mile to the turn onto the avenue that goes to my subdivision, and continue the FAS through my left turn onto that road. Once I'm on the avenue I can see that shitty light at the Starbucks/Home Depot complex, and if it's red I just keep coasting at like 10 MPH while I time the green. Once it's getting close to green, or of it was green to begin with, I start the engine back up and lightly accelerate to 35 MPH, then FAS the next 3/8 mile to a stop sign.

As I brake at the stop sign I start the engine up just as it's my turn to traverse the 3-way intersection, then accelerate back up to 45 MPH again. From this point I go into my last FAS for a total of a 1/2 mile that goes to my entrance road into my subdivision, then has an immediate left, then a right 100m later, then 100m to my house, finished by a left turn and a 7-9 MPH coast right up the driveway and into my garage (the trick is to start the garage door opening from a ways back).

The total distance driven in this scenario is about 1.5 miles containing moderate traffic, 3 lights and a stop sign, but my engine was only turned on for about 3/8 mile of it despite me keeping up decently with the traffic patterns.

09-11-2007, 05:51 PM	#11
BailOut Steals terrorist's lunch View User's Garage Drives: 2007 Yaris Liftback Join Date: Mar 2007 Location: Reno, Nevada, USA Posts: 1,299	Although every change I've made added to my MPG numbers by far and away the largest item was FAS. If the engine isn't running it isn't using fuel. That's as MPG-friendly as it gets. To give you an example of how FAS works for me let me tell you how I drive home through my neighborhood. Keep in mind that the higher tire pressures I run really help with decreasing rolling resistance, so I can coast much farther without losing much speed than someone running their tires at 32 PSI. I've already been FAS'ing long before my exit from the highway, so when I get to the bottom of the off-ramp I brake at the light, which is usually red. I wait for the traffic to pass and once I see an opening I start the engine and lightly accelerate to the speed limit of 45 MPH, unless the next light a short distance away is red in which case I only accelerate to 10 MPH and then FAS again. Once I reach 45 MPH I FAS and coast the next 3/8 mile to the turn onto the avenue that goes to my subdivision, and continue the FAS through my left turn onto that road. Once I'm on the avenue I can see that shitty light at the Starbucks/Home Depot complex, and if it's red I just keep coasting at like 10 MPH while I time the green. Once it's getting close to green, or of it was green to begin with, I start the engine back up and lightly accelerate to 35 MPH, then FAS the next 3/8 mile to a stop sign. As I brake at the stop sign I start the engine up just as it's my turn to traverse the 3-way intersection, then accelerate back up to 45 MPH again. From this point I go into my last FAS for a total of a 1/2 mile that goes to my entrance road into my subdivision, then has an immediate left, then a right 100m later, then 100m to my house, finished by a left turn and a 7-9 MPH coast right up the driveway and into my garage (the trick is to start the garage door opening from a ways back). The total distance driven in this scenario is about 1.5 miles containing moderate traffic, 3 lights and a stop sign, but my engine was only turned on for about 3/8 mile of it despite me keeping up decently with the traffic patterns. __________________ - Brian Share the Road I often carry 2 carpool passengers and mountain bikes or snowboards/skis over a 4,500 foot elevation difference. Click the graphic above to see my detailed mileage logs.