Fuel Economy - Page 41 - Toyota Yaris Forums

Black Yaris · 10-29-2006, 10:48 AM

[QUOTE=AlexK]mpg is lower on the highway [QUOTE]
only time gas milage is worse on the expresway is if you drive a hyrid. Stop and go traffic uses much more gas than staying at a constant speed

07WYarisRS · 10-29-2006, 11:26 AM

or unless you drive it too fast
stick with the spped limits and you will use less fuel on the highway

AlexK · 10-29-2006, 10:30 PM

Quote:

only time gas milage is worse on the expresway is if you drive a hyrid.

... or if you drive like I mentioned above.

stuffy · 11-01-2006, 02:44 PM

theladybug,

you will probably see some improvements in fuel economy once your engine breaks-in a little more,
but with the type of driving you are doing, i wouldn't expect to see great numbers,

i average about 34 mpg (us gallons) or 6.9L /100 km and my driving is mostly city driving with just short trips,
but the best i have achieved is 45 mpg on tanks that are entirely hwy driving.

swng · 11-01-2006, 07:57 PM

Quote:

Originally Posted by stuffy

theladybug,

you will probably see some improvements in fuel economy once your engine breaks-in a little more,
but with the type of driving you are doing, i wouldn't expect to see great numbers........

Well said friend. There is one more factor which may not be friendly to her fuel economy, i.e. the arrival of winter

.

ECHOKnight2000 · 11-02-2006, 11:39 PM

Quote:

Originally Posted by swng

Well said friend. There is one more factor which may not be friendly to her fuel economy, i.e. the arrival of winter

.

I hate winter! I see my mileage going down as well, okay its decent but nothing like it was in the spring and summer. I'm getting low to mid thirties but oh well. I guess if I try I probably could get 40's but I would have to try harder in the winter time and as mentioned before the winter blend stuff in the gas at gas stations don't help

Pars · 11-03-2006, 01:53 AM

Seem like the cold weather and winter gas is going to take about a 4mpg hit on the Yaris. Probably more if you have more then a few cold starts per day and are driving short distances.

theladybug · 11-02-2006, 03:30 PM

Quote:

Originally Posted by stuffy

but with the type of driving you are doing, i wouldn't expect to see great numbers,

That I know is true. I'm looking forward to taking my Yaris on its first road trip, actually, so I can see what kind of fuel economy its actually capable of.

stuffy · 11-02-2006, 01:47 PM

Quote:

Well said friend. There is one more factor which may not be friendly to her fuel economy, i.e. the arrival of winte

too true swng, my car was new last winter (so not broken in) and I was only getting about 27 mpg.
do you get the winter blend fuel in bc? i suppose they might need it in the interior, but you wouldn't think it would be necessary in vancouver or victoria,
are you on the coast?

swng · 11-02-2006, 07:07 PM

Quote:

Originally Posted by stuffy

too true swng, my car was new last winter (so not broken in) and I was only getting about 27 mpg.
do you get the winter blend fuel in bc? i suppose they might need it in the interior, but you wouldn't think it would be necessary in vancouver or victoria,
are you on the coast?

Yes, I live close to the delta of the Fraser River where it flows into the Pacific Ocean. The weather forecast for my city today is 7(highest)/2(lowest) degrees C.
I guess in winter, the whole country is served with the winter blend, but please correct me if I am wrong. I really am not sure. If I have a chance, I will ask the professionals about that.
Regards.

swng · 11-03-2006, 01:03 AM

Yes friends, winter hurts our fuel economy in a number of ways, several of which have already been pointed out by some of you above. It is "comforting" (forgive the not too appropriate choice of word), however, to understand that many other cars are probably more hurt than our Yari.
Anyway, to help form an impression about how big the damage is, please keep on updating your numbers here throughout this winter.
Within safety limits, let us try our best to achieve good results despite everything.

swng · 11-03-2006, 03:13 AM

Yes! Also, IMHO, tires become stiffer in the cold, producing more rolling resistance. Snow tires may be better but only to a certain degree, and most of them inherently have greater rolling resistance than summer tires. The engine takes longer to reach the ideal working temperature, and in many a case, it has to work against oil that has been thickened by the cold, at least initially before the car warms up fully (synthetic oil may have an advantage in this respect).
Besides, people tend to eat more, wear more, and carry more stuff in winter (it is prudent to have a blanket to keep warm, some first aid stuff, a few coins for emergency phone calls, a chocolate bar and other things, e.g. a battery operated torch, in the car just in case we get stranded anywhere in the cold weather far away from home). All these make the load heavier. I have been told but forgotten the source that a mere addition of 5 lbs can produce a noticeable difference in the fuel economy numbers in the long run.
Limited visibility and poorer road conditions may also prevent us from driving at the optimum speed(s) for fuel economy. Reduced traction can render the using of some fuel saving driving skills inappropriate. For example, in summer, we can let the car cruise down a slope at the highest possible speed as far as it is safe and then use the momentum to make the car move on for a while after the slope ends. In winter, the roads are more slippery and our downhill speeds must be reduced for safety and hence less momentum can be gathered for later use.
These are but a few factors which affect our mpg numbers adversely in winter. I can think of more and I am sure many of us know a lot more such factors, technical or otherwise.

.

Yaris · 11-03-2006, 10:19 PM

Quote:

Originally Posted by swng

I have been told but forgotten the source that a mere addition of 5 lbs can produce a noticeable difference in the fuel economy numbers in the long run.

I've noticed my mileage fluctuating depending on whether my wife gains or loses weight.

BMGYaris · 11-03-2006, 09:03 PM

well my first take was 29 mpg, but i drove really really fast on the interstate so no surprise. Then i took it in to get the alignment fixed the same time i filled up. My second tank has just yieleded 23 mpg all interstate never over 80, mostly abotu 70, tire pressure is checked oils and all checked, nothing really to explain it so its going in to the shop monday and they will run some test and all...lets hope they can fix him or they give me an awesome trade up:)

swng · 11-04-2006, 12:24 AM

Quote:

Originally Posted by BMGYaris

well my first take was 29 mpg, but i drove really really fast on the interstate so no surprise. Then i took it in to get the alignment fixed the same time i filled up. My second tank has just yieleded 23 mpg all interstate never over 80, mostly abotu 70, tire pressure is checked oils and all checked, nothing really to explain it so its going in to the shop monday and they will run some test and all...lets hope they can fix him or they give me an awesome trade up:)

Good luck and please keep us posted!

swng · 11-04-2006, 01:11 AM

Quote:

Originally Posted by Yaris

I've noticed my mileage fluctuating depending on whether my wife gains or loses weight.

Lovely! How humorous and how observant!
Actually more advices say a 100 lb difference in load can mean a 1 - 2% difference in the fuel consumption rate

.
Please see:http://www.google.ca/search?q=fuel+s...ient=firefox-a

Incidentally, the advice below is from:http://www.tdc.ca/savinggas.htm

"Personally lose some weight. Yes, if you are overweight and need to lose A FEW POUNDS - do it and you will save gas because the weight in the car you are driving will be reduced. We know that there are a high percentage of people who live in North America who are definitely overweight... what a great incentive to lose A FEW POUNDS when you rationalize it by saying you can save a few dollars on fuel as you lose some of your personal weight"

I have capitalized a few words. Please go to the middle of the linked page to see the paragraph in its original form.

Good health to your wife and you

!

eTiMaGo · 11-04-2006, 01:37 AM

It's quite true, on a lightweight car the weight of the occupants can be a large percentage of the total weight, and reducing this total weight should include a good diet

BMGYaris · 11-04-2006, 02:18 PM

PLEASE READ:

I posted a few post up. I havent gained any weight and my fuel is of the same quality (dont think we get much winter mixture down here in south carolina) but i have an update on my problems.

Just last night i was driving, engine still cool, no problems though. i turn at a redlight, get giong about 25, tap the gas and suddenly there is a loud high pitched..whirrrrrrrr and

i was hardly accelerating at all. i let go of the gass...i turn of my music, tap it, whirrrrrrrrrrr,

i quickly feel the automatic clutch, its in drive, i pop on the light to confirm, not in neutral, not in third, in drive, i check the parking break, its fine, i tap the gas, whirrrrr

i start to pull over and tap it one more time and its smooth as butter, regular deep voice of automatic transmissions shifting gears. no problems the rest of the night.

I suppose what ever has caused my drastic decrease in mpg all the way down to 25 all highway driving at average 65mph is also causing this problem. Anybody have any ideas what is wrong before i head of to the shop on monday let me know.

10-29-2006, 10:48 AM	#1
Black Yaris der Zeck View User's Garage Drives: '05 Audi A4 1.8t quattro Join Date: Sep 2006 Location: Toledo, OH Posts: 5,231	[QUOTE=AlexK]mpg is lower on the highway [QUOTE] only time gas milage is worse on the expresway is if you drive a hyrid. Stop and go traffic uses much more gas than staying at a constant speed __________________

10-29-2006, 11:26 AM	#2
07WYarisRS HardlyDangerous Drives: 09 Yaris LE, H/B, auto Join Date: Jul 2006 Location: Ridgeway Ontario Posts: 573	or unless you drive it too fast stick with the spped limits and you will use less fuel on the highway __________________ The early bird gets the worm, but the second mouse gets the cheese.

11-03-2006, 03:13 AM	#12
swng Drives: 06 3-dr auto RS Join Date: Jan 2006 Location: BC Posts: 1,051	Yes! Also, IMHO, tires become stiffer in the cold, producing more rolling resistance. Snow tires may be better but only to a certain degree, and most of them inherently have greater rolling resistance than summer tires. The engine takes longer to reach the ideal working temperature, and in many a case, it has to work against oil that has been thickened by the cold, at least initially before the car warms up fully (synthetic oil may have an advantage in this respect). Besides, people tend to eat more, wear more, and carry more stuff in winter (it is prudent to have a blanket to keep warm, some first aid stuff, a few coins for emergency phone calls, a chocolate bar and other things, e.g. a battery operated torch, in the car just in case we get stranded anywhere in the cold weather far away from home). All these make the load heavier. I have been told but forgotten the source that a mere addition of 5 lbs can produce a noticeable difference in the fuel economy numbers in the long run. Limited visibility and poorer road conditions may also prevent us from driving at the optimum speed(s) for fuel economy. Reduced traction can render the using of some fuel saving driving skills inappropriate. For example, in summer, we can let the car cruise down a slope at the highest possible speed as far as it is safe and then use the momentum to make the car move on for a while after the slope ends. In winter, the roads are more slippery and our downhill speeds must be reduced for safety and hence less momentum can be gathered for later use. These are but a few factors which affect our mpg numbers adversely in winter. I can think of more and I am sure many of us know a lot more such factors, technical or otherwise..

11-04-2006, 01:37 AM	#17
eTiMaGo vroom vroom View User's Garage Drives: lil red 5-door Join Date: Sep 2006 Location: Bangkok, Thailand Posts: 7,744	It's quite true, on a lightweight car the weight of the occupants can be a large percentage of the total weight, and reducing this total weight should include a good diet __________________ The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ...

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11-01-2006, 02:44 PM	#4
stuffy Drives: 06 yaris 5-dr le man Join Date: Mar 2006 Location: ontario, canada Posts: 699	theladybug, you will probably see some improvements in fuel economy once your engine breaks-in a little more, but with the type of driving you are doing, i wouldn't expect to see great numbers, i average about 34 mpg (us gallons) or 6.9L /100 km and my driving is mostly city driving with just short trips, but the best i have achieved is 45 mpg on tanks that are entirely hwy driving.

11-03-2006, 01:53 AM	#7
Pars Drives: 07 Yaris Liftback Join Date: Aug 2006 Location: Toronto Posts: 418	Seem like the cold weather and winter gas is going to take about a 4mpg hit on the Yaris. Probably more if you have more then a few cold starts per day and are driving short distances.

11-03-2006, 01:03 AM	#11
swng Drives: 06 3-dr auto RS Join Date: Jan 2006 Location: BC Posts: 1,051	Yes friends, winter hurts our fuel economy in a number of ways, several of which have already been pointed out by some of you above. It is "comforting" (forgive the not too appropriate choice of word), however, to understand that many other cars are probably more hurt than our Yari. Anyway, to help form an impression about how big the damage is, please keep on updating your numbers here throughout this winter. Within safety limits, let us try our best to achieve good results despite everything.

11-03-2006, 09:03 PM	#14
BMGYaris Drives: Yaris 3dr Hatchback Join Date: Oct 2006 Location: South Carolina, USA Posts: 255	well my first take was 29 mpg, but i drove really really fast on the interstate so no surprise. Then i took it in to get the alignment fixed the same time i filled up. My second tank has just yieleded 23 mpg all interstate never over 80, mostly abotu 70, tire pressure is checked oils and all checked, nothing really to explain it so its going in to the shop monday and they will run some test and all...lets hope they can fix him or they give me an awesome trade up:)

11-04-2006, 02:18 PM	#18
BMGYaris Drives: Yaris 3dr Hatchback Join Date: Oct 2006 Location: South Carolina, USA Posts: 255	PLEASE READ: I posted a few post up. I havent gained any weight and my fuel is of the same quality (dont think we get much winter mixture down here in south carolina) but i have an update on my problems. Just last night i was driving, engine still cool, no problems though. i turn at a redlight, get giong about 25, tap the gas and suddenly there is a loud high pitched..whirrrrrrrr and i was hardly accelerating at all. i let go of the gass...i turn of my music, tap it, whirrrrrrrrrrr, i quickly feel the automatic clutch, its in drive, i pop on the light to confirm, not in neutral, not in third, in drive, i check the parking break, its fine, i tap the gas, whirrrrr i start to pull over and tap it one more time and its smooth as butter, regular deep voice of automatic transmissions shifting gears. no problems the rest of the night. I suppose what ever has caused my drastic decrease in mpg all the way down to 25 all highway driving at average 65mph is also causing this problem. Anybody have any ideas what is wrong before i head of to the shop on monday let me know.