Go Back   EcoModder Forum > EcoModding > Off-Topic Tech
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 09-25-2008, 05:27 PM   #1 (permalink)
Master EcoModder
 
Matt Herring's Avatar
 
Join Date: Jun 2008
Location: North Andover, MA
Posts: 857

Bone's 2010 Prius - '10 Toyota Prius Black
90 day: 56.78 mpg (US)
Thanks: 5
Thanked 23 Times in 19 Posts
Random Thought of the Day

While parking my car today in a big lot with several available spaces I had a random thought and wanted to see if it holds any water (even a smidgen of truth will convince me I haven't gone totally bonkers).

When driving in reverse (i.e. backing out of a parking space ordriveway) does the odometer actually run backwards and decrease in total mileage (even .001 of a mile when you backup)?

And if the odometer does run backwards would it be beneficial to MPG to always park so your car can pull forward out of a parking space rather than backing out of a parking space (even if it saves .001 of a mile when you pull forward out of the space)?

Alot of times in big parking lots you can pull into a space and go through that space into another space (allowing your car to pull out forward the next time you get in).

Obviously, I would not expect any substantial MPG savings if this is true but when random questions arise then random answers are needed.

Welcome to my brain after working an 18 hour shift!

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 09-25-2008, 06:29 PM   #2 (permalink)
Master EcoModder
 
metroschultz's Avatar
 
Join Date: Dec 2007
Location: Norfolk, Va. USA
Posts: 869

CPT SLO - '93 GEO Metro plainjane
90 day: 53.91 mpg (US)

SilverHairBeauty - '01 Toyota Avalon XL
90 day: 24.06 mpg (US)
Thanks: 14
Thanked 33 Times in 28 Posts
Send a message via AIM to metroschultz
The answer my Friend is
It depends.
I have not worked on a car, ever, that ran the Odo backward.
Newer cars, 1996 & up usually, the Odo runs forward all the time. Even when you back up.
Try backing down your street in the middle of the night sometime. You will see that the Speedo registers road speed and the Odo goes up .1 mile.
Older cars, cable and gear driven stuff, the Odo stops and the Speedo stop when you reverse.
No loss of miles but no gain either.
You are not crazy.
I am sure others were waiting for you to ask.
Schultz.
__________________


When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity.
Albert Einstein
  Reply With Quote
Old 09-25-2008, 11:31 PM   #3 (permalink)
Master EcoModder
 
Join Date: Jun 2008
Location: Earth
Posts: 5,209
Thanks: 225
Thanked 808 Times in 592 Posts
In any case, it wouldn't change your actual mpg at all, just add another bit of inaccuracy to the computation.
  Reply With Quote
Old 09-26-2008, 10:18 AM   #4 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,056

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 53.56 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 58.34 mpg (US)
Thanks: 3,704
Thanked 6,511 Times in 3,373 Posts
Regardless of what the odometer does, you'll find that "pull-through" parking (vs. reversing out) is recommended in the 100+ Hypermiling Tips .
__________________
Latest mods: 3-cylinder Mitsubishi Mirage. EcoMods now in progress...
Ecodriving test:
Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 09-26-2008, 11:33 AM   #5 (permalink)
Depends on the Day
 
RH77's Avatar
 
Join Date: Nov 2007
Location: Kansas City Area
Posts: 1,761

Teggy - '98 Acura Integra LS
Sports Cars
90 day: 32.74 mpg (US)

IMA - '10 Honda Insight EX
Team Honda
90 day: 34.76 mpg (US)

Tessie - '06 Acura TSX Base
90 day: 28.2 mpg (US)
Thanks: 31
Thanked 41 Times in 35 Posts
Didn't anybody see Ferris Bueller's Day Off?
__________________
“If we knew what we were doing, it wouldn't be called research” ― Albert Einstein

_
_
  Reply With Quote
Old 09-26-2008, 11:38 AM   #6 (permalink)
Master EcoModder
 
Join Date: Jun 2008
Location: London, Ontario
Posts: 1,096

2k2Prot5 - '02 Mazda Protege5
90 day: 33.82 mpg (US)
Thanks: 0
Thanked 12 Times in 9 Posts
That's exactly what I was going to say!
  Reply With Quote
Old 09-26-2008, 11:42 AM   #7 (permalink)
EcoModding Lurker
 
Join Date: Jun 2008
Location: Glassboro, NJ
Posts: 88

Kawi - '04 Kawasaki Vulcan 800 Classic
90 day: 56.48 mpg (US)

The Monte - '99 Chevrolet Monte Carlo Z34
90 day: 26.52 mpg (US)

Mazda - '10 Mazda 3i
90 day: 35.15 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
I did see Ferris Bueller's Day Off, and unfortunately the movie is accurate, miles will not come off the od without you actually messing with the od and rolling it back yourself. Which is not recommended. But backing out of a parking spot is not recommended simply because you use more gas to back up and then drive forward than you would if you just pulled out of a spot.

__________________
Goal one= 30mpg on The Monte by changing the nut that connects the steering wheel to the seat.

  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
4 Day School Weeks To Save Fuel Matt Herring EcoModding Central 9 07-25-2008 03:12 PM
ABG's ebay find of the day SVOboy Fossil Fuel Free 3 07-17-2008 05:21 PM
Atlanta Clean Air day NoCO2 Alternative Transportation 0 06-10-2008 12:25 PM
Random thought reguarding ICE off/MPG figures Chris D. EcoModding Central 8 04-28-2008 10:25 AM
Valentines Day is Upon Us! metroschultz The Lounge 1 02-14-2008 03:36 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com