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Author Topic: Warming up the car Back to Topics
JamCoope

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Maryland

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Message Posted: Jan 26, 2011 10:21:52 AM

Most people agree that cars run more economically once they're warmed up... especially in the cold winter months.

Here's a question: has anyone tested whether it is more economical to let your car warm up by idling in the driveway, or by just letting warm up as you drive?
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contiki
Champion Author Ontario

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Message Posted: Apr 24, 2014 7:17:28 AM

Not needed............it is Spring..................
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jay93LA
Champion Author New Orleans

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Message Posted: Apr 23, 2014 8:43:29 AM

no
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contiki
Champion Author Ontario

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Message Posted: Apr 23, 2014 6:33:05 AM

No warm up of the vehicles is needed as it is spring............
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shstew
Veteran Author British Columbia

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Message Posted: Apr 22, 2014 9:44:57 AM

10 seconds usually does it for me. A little longer if it's really cold.
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gvan
Champion Author Chicago

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Message Posted: Apr 22, 2014 9:32:15 AM

99% of the time I start and am moving within 10-15 seconds even though I have remote starters on both vehicles. 1% of the time the windows may be fogged up and I need to run the defroster a few minutes to clear the windshield.
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contiki
Champion Author Ontario

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Message Posted: Apr 22, 2014 7:34:32 AM

No warm up of the vehicles is needed as it is spring............
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Hemond
Champion Author Providence

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Message Posted: Apr 22, 2014 7:24:16 AM

QUOTE ::::Any time the engine is running, you are burning gas. Kind of a nobrainer.
::::


Correct, and anytime you use a tooth pick you are consuming the forest, equally a no-brainer.
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twt
Champion Author Virginia Beach

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Message Posted: Apr 22, 2014 5:22:22 AM

Any time the engine is running, you are burning gas. Kind of a nobrainer.
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HotRod10
Champion Author Wyoming

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Message Posted: Apr 21, 2014 8:44:22 AM

"In colder northern regions of North American - cars can be fitted with a electric engine block heater to warm up the car during the cold winter months."

They can be, but even with the fairly modest electricity costs here, heating with a block heater costs about the same as warming it up by idling. Keeping the car in a heated garage is by far the least efficient way to warm it, but I'm sure the most convenient. I wouldn't know, I only have my vehicles in a heated garage to do repairs, otherwise they stay outside.
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HotRod10
Champion Author Wyoming

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Message Posted: Apr 21, 2014 8:35:10 AM

A very good synopsis, Houckster.

I would only add one scenario - a few of us don't really have a viable option of "driving easily until the engine warms up". I'm going up an on-ramp, merging onto a 75mph interstate a few blocks from home, with my car there's no safe way to do that while taking it easy on the engine. When it's cold, I warm mine up before leaving. My other route option is longer, slower, and uses more gas because of all the stoplights.
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randy3116
All-Star Author Tennessee

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Message Posted: Apr 21, 2014 8:05:16 AM

warm for a short time if the car has been sitting in the cole for an extended period of time
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contiki
Champion Author Ontario

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Message Posted: Apr 21, 2014 7:18:06 AM

No warm up of the vehicles is needed as it is spring............
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cv
Champion Author Raleigh

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Message Posted: Apr 21, 2014 6:34:21 AM

Just 30 seconds and I am off.
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Houckster
Champion Author Atlanta

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Message Posted: Apr 20, 2014 11:41:09 PM

JAMCOOPE asks: . . .has anyone tested whether it is more economical to let your car warm up by idling in the driveway, or by just letting warm up as you drive?
_____
About a million people have. This has been a very frequent topic over the years. Some like to let the vehicle warm up in the driveway so they don't feel cold when driving off, others start the engine and go driving easily until the engine warms up. The former claim that idling doesn't waste that much fuel while the other side points to useless pollution and less MPG. There's no general consensus, just two groups with opposing viewpoints.

The best thing to do is do your own testing and see which approach you feel best with.

[Edited by: Houckster at 4/20/2014 11:41:52 PM EST]
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drydem
Sophomore Author Maryland

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Message Posted: Apr 20, 2014 1:08:50 PM

In colder northern regions of North American - cars can be fitted with a electric engine block heater to warm up the car during the cold winter months. It takes between 30 minutes to a few hours to warm up a car with an engine block heater depending on whether the vehicle is in a heated or unheated garage or not. A engine block heater can make the car's internal combustion engine run more fuel efficiently

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contiki
Champion Author Ontario

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Message Posted: Apr 20, 2014 8:05:49 AM

contiki- there never was a mechanical reason.

gougedQC, different strokes for different folks......

We like to have warmed up vehicles to drive away.................

Warmer weather is here now in Ontario....no need to warm up the vehicles...

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gougedQC
Champion Author Montreal

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Message Posted: Apr 19, 2014 8:23:07 AM

contiki- there never was a mechanical reason.
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contiki
Champion Author Ontario

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Message Posted: Apr 19, 2014 7:37:23 AM

Warmer weather here in Ontario....no need to warm up the vehicles......
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dassfg
Champion Author Fort Worth

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Message Posted: Apr 18, 2014 7:55:54 AM

Just drive it
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contiki
Champion Author Ontario

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Message Posted: Apr 18, 2014 7:36:56 AM

Spring is here no need to warm up the vehicles.............
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cra2006
Champion Author Washington DC

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Message Posted: Apr 17, 2014 9:53:41 AM

The vehicle warms up fastest when your driving.
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Hemond
Champion Author Providence

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Message Posted: Apr 17, 2014 8:11:19 AM

Windshield was encrusted with ice and snow yesterday morning . No choice but to warm it up. Pretty cold this morning too. YOu bet I'll be warming it up again.
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contiki
Champion Author Ontario

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Message Posted: Apr 17, 2014 7:12:13 AM

No...spring is here..........
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Hemond
Champion Author Providence

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Message Posted: Apr 16, 2014 7:18:57 AM

Went to a late night movie last night, got out at midnight. Car was fogged badly due to cold front. (thanks global warming)

I had to sit idling for 5 minutes to clear windows. Even with AC on neither rear defogger nor defrosters were a match for the saturated air. Well worth the few mililiters of fuel used to ensure a clear windshield/rear window.
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contiki
Champion Author Ontario

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Message Posted: Apr 16, 2014 7:04:30 AM

Not needed...spring is here...........
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b899
Champion Author Connecticut

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Message Posted: Apr 15, 2014 8:14:02 AM

no
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hoopitup2000
All-Star Author Virginia

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Message Posted: Apr 15, 2014 7:01:05 AM

Start up & drive away. No rocket science.
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contiki
Champion Author Ontario

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Message Posted: Apr 15, 2014 6:36:16 AM

No warm up of vehicles required...............
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randy3116
All-Star Author Tennessee

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Message Posted: Apr 15, 2014 5:40:04 AM

have not tested but I do allow a short time for the car to warm up when it has been parked outside in coldtemps for a length of time
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twt
Champion Author Virginia Beach

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Message Posted: Apr 15, 2014 5:38:11 AM

A waste of gas.
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Tundralimited2009
Champion Author Dallas

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Message Posted: Apr 15, 2014 2:54:46 AM

None of the above
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ScottAdams5
Champion Author New York

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Message Posted: Apr 15, 2014 1:19:05 AM

No.
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aerosumit
Rookie Author New Jersey

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Message Posted: Apr 14, 2014 4:20:04 PM

no need
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HotRod10
Champion Author Wyoming

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Message Posted: Apr 14, 2014 9:40:42 AM

This morning I definitely let it warm up. It was 12F when I went out, with several inches of snow over a thick layer of ice. I let it run for about 30 minutes while I had some hot cocoa and breakfast, then I got in, hit the wipers and drove to work with the windows clear. When you're driving a small car on the interstate with semis, on ice, perfect visibility is a must. I play it safe and make sure the glass is warm so it doesn't fog. It only costs a quarter, but it would be worth it at ten times the price.
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contiki
Champion Author Ontario

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Message Posted: Apr 14, 2014 7:50:58 AM

With spring here in Ontario....no need to warm up our vehicles..........
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deant99
Champion Author Ontario

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Message Posted: Apr 13, 2014 8:45:38 PM

a minute or two, how ever long it takes to clear the windows
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Bus936
Champion Author Lexington

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Message Posted: Apr 13, 2014 9:32:04 AM

There is absolutely no need whatsoever to leave an idling vehicle to warm up, and in this area it is against the law to do so.
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contiki
Champion Author Ontario

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Message Posted: Apr 13, 2014 7:32:53 AM

No warm up of vehicles required...........
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contiki
Champion Author Ontario

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Message Posted: Apr 12, 2014 7:44:02 AM

No need to warm up our vehicles now that spring is here..............
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contiki
Champion Author Ontario

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Message Posted: Apr 11, 2014 7:20:42 AM

Now that spring is here .....no need to warm up the vehicles.........
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b899
Champion Author Connecticut

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Message Posted: Apr 9, 2014 8:17:38 AM

No
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jimmy544
Champion Author Boston

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Message Posted: Apr 9, 2014 7:22:36 AM

I installed a block heater on one car so that I did not need any warm up and I have no numbers yet but the car does seem to use less gas. You really need to leave it plugged in all night though.
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contiki
Champion Author Ontario

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Message Posted: Apr 9, 2014 7:07:10 AM

Spring......no need to warm up the vehicles................
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xbAG
Champion Author California

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Message Posted: Apr 8, 2014 8:55:06 PM

we don't have cold winter months, here on the central coast of CA.
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cujo1977
Champion Author Nashville

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Message Posted: Apr 8, 2014 4:19:43 PM

N
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santa_banta
Rookie Author San Jose

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Message Posted: Apr 8, 2014 10:42:41 AM

not needed in ca
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WEDDY
Champion Author Phoenix

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Message Posted: Apr 8, 2014 10:05:29 AM

No
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hoopitup2000
All-Star Author Virginia

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Message Posted: Apr 8, 2014 7:01:19 AM

Rarely . . . .
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contiki
Champion Author Ontario

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Message Posted: Apr 8, 2014 6:53:16 AM

No need to warm up the vehicles.........
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Wanda127
Champion Author Florida

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Message Posted: Apr 7, 2014 7:48:12 AM

I Only do this on cold winter days.

[Edited by: Wanda127 at 4/7/2014 7:48:56 AM EST]
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