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Toyota Corolla Real World MPG

304 messages,  Last post on Oct 18, 2009 at 11:58 AM

You are in the Toyota Corolla Forum. Your Hosts are pat & karens

What is this discussion about? Toyota Corolla, Fuel Efficiency (MPG), Sedan


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#237 of 304
Re: Toyota Corolla MPG experience [tucson_mike] by nippononly
Aug 26, 2008 (9:04 pm)
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Replying to: tucson_mike (Aug 26, 2008 4:45 pm)

Seemed the higher altitude I got, the better my MPG. Going from Durango to Estes I got 44MPG going up and down mountain roads. Does anyone know if this is an altitude issue, temperature issue, different gas in CO or what??
 
You use less gas at altitude for the same reason you have less power - there is less oxygen in each "gulp" of air the engine grabs. The computer leans out the mix accordingly, and voila! You are saving gas!
 
I have read of some fantastic mileages people have managed on road trips in their Corolla 5-speeds - yours seem to be about what I would expect based on those other accounts - and what you say is true: it makes a significant difference going with the 5-speed vs the 4A.
#238 of 304
Re: Toyota Corolla MPG experience [tucson_mike] by terceltom
Aug 27, 2008 (5:14 am)
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Replying to: tucson_mike (Aug 26, 2008 4:45 pm)

You may be gaining mpg by coasting in neutral but your taking your life in your own hands also by the lack of control you have on the car. When moving, your car should always be engaged in a gear other than neutral to ensure engine braking and ultimate control. Your most likely eating through brake shoes and pads with this habit of coasting to stops and not using your engine braking and downshifting when approaching stop signs and stop lights also. For ultimate control your cars manual will tell you to keep your cars transmission engaged at all times except when at a complete stop. Is the minimum gas savings worth the risk?
#239 of 304
Re: Toyota Corolla MPG experience [terceltom] by tucson_mike
Aug 27, 2008 (6:18 am)
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Replying to: terceltom (Aug 27, 2008 5:14 am)

I should have been more specific - if a need to stop in city traffic is looming up ahead, I actually just put the clutch in and shift down through the gears as needed (keeping the clutch disengaged) as my speed drops until a complete stop is made and then go to neutral to relax that left leg. As several people have noted, the goal is to smooth out your accel/decel profile to minimize braking.
 
Also, that 42MPG I got from Santa Fe to Las Cruces was pure I-10 driving with no stops and the cruise set at 78MPH. I did earlier try a reduced speed in Arizona on I-10 (78 down to 69 - any slower is a hazard on that road) and saw no real difference in highway MPG). All of this is with the AC running as needed.
#240 of 304
Re: Tremendously better for Corolla highway ratings?????? [hoopitup2000] by gizzer777
Aug 27, 2008 (6:24 am)
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Replying to: hoopitup2000 (Aug 10, 2008 6:59 pm)

I figured by the :"old fashioned way" and the computer was off about 1.5-2 mpg on the plus side. I will still take 40 mpg on the hwy.
 
As far as the Prius goes, I could never justify the difference in cost in my own situation
#241 of 304
Re: Toyota Corolla MPG experience [tucson_mike] by kipk
Aug 27, 2008 (6:34 am)
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Replying to: tucson_mike (Aug 27, 2008 6:18 am)

Less wear and tear on the drive train to just leave the tranny in 5th, or what ever gear you were in, and coast "in Gear" until necessary to use the clutch and the brake.
 
Down shifting, to slow down, looks wonderful in the movies or on the race track, but real world indicates that every time you operate the clutch, and force the engine to rev, results in less longevity on the associated parts. Compared to engines re builds, clutches, and CV joints, brakes are cheap to replace.
 
Learn the characteristics of your car and let off the throttle so that the car has slowed to a reasonable speed before having to apply the brakes. Once you get use to it, it becomes 2nd nature.
 
Kip
#242 of 304
Re: Toyota Corolla MPG experience [kipk] by nippononly
Aug 27, 2008 (7:06 am)
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Replying to: kipk (Aug 27, 2008 6:34 am)

I think tucson mike was saying he shifted the gears but kept the clutch out. That way he can be in gear in a second if he needs to, but doesn't wear the clutch by engaging every gear going down.
 
I do the same thing you are recommending: allow my speed to drop in the gear I am in, almost until it bogs, then clutch out and use the foot brake the rest of the way.
 
This is one of the ways a manual-shift car saves gas vs an automatic car.
#243 of 304
Re: Tremendously better for Corolla highway ratings?????? [gizzer777] by kipk
Aug 27, 2008 (7:42 am)
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Replying to: gizzer777 (Aug 27, 2008 6:24 am)

Just roughly, what is the cost difference between comparably equipped Gas Corolla and the Prius.
 
Kip
#244 of 304
Re: Tremendously better for Corolla highway ratings?????? [kipk] by gizzer777
Aug 27, 2008 (8:18 am)
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Replying to: kipk (Aug 27, 2008 7:42 am)

Price difference: It was over $7000 for me.
Hard to say...check edmunds. The wait list for the Prius was over 500 in this area and it depends on how you equip them
#245 of 304
Re: Toyota Corolla MPG experience [nippononly] by mcdawgg
Aug 27, 2008 (8:42 am)
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Replying to: nippononly (Aug 27, 2008 7:06 am)

I think tucson mike was saying he shifted the gears but kept the clutch out. That way he can be in gear in a second if he needs to, but doesn't wear the clutch by engaging every gear going down
 
True, but he is still wearing the synchronizers in the transmission when he does this, especially if not rev-matching.
#246 of 304
Re: Toyota Corolla MPG experience [mcdawgg] by nippononly
Aug 27, 2008 (4:49 pm)
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Replying to: mcdawgg (Aug 27, 2008 8:42 am)

That is true, and I believe he is also wearing out the throwout bearing by holding the clutch on the floor rather than just putting it in neutral and releasing the clutch.
 
Once I clutch out when decelerating, I shift it to neutral and release the clutch. I am always below 30 mph at that point anyway, and often below 20.
 
One other way I improve my mileage is to accelerate away from a light and get up to speed, then shift it to neutral and let it coast if there is a light in the distance that is red. I do take care, however, not to drop to an unreasonable speed if I am holding up traffic behind me.

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