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Mpg difference in the am / pm drive

Discussion in 'Gen 3 Prius Fuel Economy' started by Sperez201, Aug 19, 2013.

  1. Sperez201

    Sperez201 Junior Member

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    I drive 81 miles per day (home to work to home) I take on the 605 north to the 10 east on the way to work / and the 60 south to the 57 south to the 22 west to the 405 north back to my place ( in Los Angeles). My drive to work is averaging about 45 mpg but the drive home is about 56mpg. The drive back home is about 3 miles longer than the morning commute. Both passes thru hilly and upward sections of Los Angeles (to anybody whose familiar with the freeways I've mentioned). I cannot figure out why the difference in mpg. I'm on the road about 6am and leave work about 330pm. An thoughts on this issue.
     
  2. jnet

    jnet Member

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    am temperature should be cooler than pm. Also check the difference in elevation between your home and office. My GPS gives me the elevation when I do a "Where AM I"
     
  3. DomoDriver

    DomoDriver Junior Member

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    I routinely get in the 80's-90's on my way to work, but my absolute record coming home is 53.8. That's because I work downhill from my house.

    Is there an elevation change between your work and home?
     
  4. bisco

    bisco cookie crumbler

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    prevailing wind.
     
  5. fotomoto

    fotomoto Senior Member

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    :)
     
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  6. SharonP

    SharonP Junior Member

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    57 south to the 22 is mostly downhill, after the initial climb into Diamond Bar. The 605 to the 60 has a more gradual elevation rise, but it's still uphill. That area get pretty windy as well, is the wind at your back or are you driving into it?
     
  7. GSW

    GSW PRIUS POWER

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    Thats what happens to me, 58-60 mpg with a tail wind. Especially with
    a cold front passage.
     
  8. mmmodem

    mmmodem Senior Taste Tester

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    Yup, going with the elevation change. I drive uphill to work and get 60-70 mpg. Going home, I get 80-90 mpg. Even a slight change makes a difference.