Somewhat disappointed

[thebarber]

a/c on at 80F? you made of butter? lol

[YarisOwnersDad]

Originally Posted by thebarber

a/c on at 80F? you made of butter? lol

I guess I am more of a cool weather person. So what am I doing in western KY????

Actually, a good portion of the time the A/C was on was because I was in defrost mode to keep the inside of the windows and windshield from fogging up. It was VERY humid, even foggy outside for part of the trip. When I tried to go get out of defrost mode, the windows would immediately fog.

Tom

[thebarber]

Originally Posted by YarisOwnersDad

I guess I am more of a cool weather person. So what am I doing in western KY????

Actually, a good portion of the time the A/C was on was because I was in defrost mode to keep the inside of the windows and windshield from fogging up. It was VERY humid, even foggy outside for part of the trip. When I tried to go get out of defrost mode, the windows would immediately fog.

Tom

i was just bustin' your balls

i dig, humidity sucks...but its been a dry summer in southern ontario

[supmet]

Originally Posted by YarisOwnersDad

When I tried to go get out of defrost mode, the windows would immediately fog.

I hope you realize if you never had the A/C on in the first place they wouldn't fog, and if you left the A/C off for more than 2 minutes it would take care of itself...

User created self sustaining problems ftw.

[YarisOwnersDad]

Originally Posted by supmet

I hope you realize if you never had the A/C on in the first place they wouldn't fog, and if you left the A/C off for more than 2 minutes it would take care of itself...

User created self sustaining problems ftw.

Not so sure about that. Have you ever experienced the extremely high humidity of the Midwest? It SUCKS. The dew point is much higher around here than what you are accustomed to, I'm sure, since your sig says you are in southern CA.

It was in the very early hours of the morning, while the outside temperatures were still in the low to mid 60s, when I was using the defrost mode.

Tom

[supmet]

Originally Posted by YarisOwnersDad

Not so sure about that. Have you ever experienced the extremely high humidity of the Midwest? It SUCKS. The dew point is much higher around here than what you are accustomed to, I'm sure, since your sig says you are in southern CA.

It was in the very early hours of the morning, while the outside temperatures were still in the low to mid 60s, when I was using the defrost mode.

Tom

I've lived in wisconsin, and my mom lives in chicago. Dew point/humidity is only really an issue because you are creating a difference in temperature between the water molecules in the air and your windshield.

edit: I've pretty much driven the gamut of humidities, from death valley and vegas to the midwest. The A/C has never been "required" to keep the windshield from fogging. You're making a cold windshield with the A/C, which INCREASES condensation. Having a windshield the same temp as the outside air creates the least amount of condensation, regardless of humidity.

[TheRealEnth]

lawl

[tomato]

the AC seems to make a difference as well. Other posters have reported lesser fuel economy while using the AC in other threads.

Still, 40 MPG is really good IMO! Hope the OP isn't thinking of trading in already

[alch3miss]

Sounds pretty normal, all things considered.

[minicorolla]

I quit using the speed control. much better mileage after that. feathering the throttle, coasting downhill, sometimes draft behind trucks but way back 'cuz it's not safe and can't see what's on the road coming up. Try it. Helped me out.

[Yarold n Kumar]

I think it's hilarimous that the title of the post contains "disappointed" and you're averaging 40 mpg. Just goes to show what some solid engineering can do to raise expectations. I've got to say, I'm disappointed if I ever get below 36 mpg, and that's a thought I never would have had before I got this car.

yarii ftw

[YarisOwnersDad]

Originally Posted by Yarold n Kumar

I think it's hilarimous that the title of the post contains "disappointed" and you're averaging 40 mpg. Just goes to show what some solid engineering can do to raise expectations. I've got to say, I'm disappointed if I ever get below 36 mpg, and that's a thought I never would have had before I got this car.

yarii ftw

That's the truth! How can I be disappointed with 40.5 MPG? That truly is a testimony to the super fuel efficiency of the Yaris.

Tom

[Woody_Woodchuck]

Hey Tom. I live in a pretty humid area and do this for the windshield fogging in that situation of cool mornings. Mornings, when I first start out I will turn to defrost heat full and fan full. It will fog worse for a minute maybe two then defog itself. I also usually need to have the windshield wipers on while warming the windshield. I turn the fan off, leaving it on defrost mode and then set the temp to center (pointing straight up). You don’t want the temp too low because, well, you know. If condensation starts I play with the fan settings, usually 1 or 2 does the trick. Sometimes I have to turn the heat up a notch. Seems the trick is to just keep a small flow of air going to the windshield, having the fan off but in defrost position will do this.

On those really hot humid mornings, 85 F, 99.9% humidity, crack the drivers window one and a half cranks, passenger side one full crank down. Follow the above procedure (yes I know it is making the car hotter!) but when cleared you can turn on the AC. Sometimes I can get away with just the drivers window open, sometimes I need both cracked a bit to get circulation going. Later in the day no need to have the windows cracked open but something about the mornings it needs it. I’m thinking it has to do with moisture already being inside the vehicle and I need to get rid of it.

[YarisOwnersDad]

Thanks, Woody.

Isn't it true that whenever the switch is in the defrost position, the A/C compressor is on? If so, then we might as well have cold air and be comfortable, right?

I could be wrong about that. Woody, or anyone else, is what I said above true or not?

Tomster

[Lafiro]

Originally Posted by YarisOwnersDad

Thanks, Woody.

Isn't it true that whenever the switch is in the defrost position, the A/C compressor is on? If so, then we might as well have cold air and be comfortable, right?

I could be wrong about that. Woody, or anyone else, is what I said above true or not?

Tomster

Yes, the a/c is engaged and the a/c is on, even if its hot air. The cold coils remove all the humidity from the air.

Maybe with the defrost option set, the a/c does not stay engaged as often as if the a/c was turned on, on purpose? Thus it will be on less of the time, saving on gas?

I really can't say, don't know if anyone could answer that one correctly either.

[roadrunner]

"Isn't it true that whenever the switch is in the defrost position, the A/C compressor is on? If so, then we might as well have cold air and be comfortable, right?"

If the lowest knob is on cold, and the middle knob is on defrost, and the top knob is off, NO AIR IS RUNNING.
If the lowest knob is on cold, and the middle knob is on defrost, and the top knob is 1 or higher, THE AIR IS RUNNING.

[Woody_Woodchuck]

Could be but I do not notice the huge (6 to 8 mpg) drop in mileage with it in that position compared to when I actually have cold air blowing out. Even with the fan on there is no noticeable difference in mileage, only when I hit the AC button. Mine is in the defrost position most of my driving time and I have a pretty good mpg average.

[Lafiro]

LOL, haha nice one!

Actually even at 70degrees here in NYC like last night, had to have the a/c the entire time because humidity way very high, windows would fog up quickly if not.

I usually have a LOT of traffic, lots of stops and goes because of stop signs every block pretty much, and some nice 70mph highway driving at times, hard acceleration(meaning shofting at 2-3k rpm) not abusing it... I usually come out to 27-29mpg average. This is not really dependant on temperature or a/c usage, and I have 17" rims with 205 tires. Probably around 34psi.