Are people really getting 40+ MPG in Gen 2?

Discussion in 'Gen 2 Prius Fuel Economy' started by timmyjane, Apr 12, 2017.

  1. Moving Right Along

    Moving Right Along Active Member

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    Or if it’s only being used for short drives in subzero temperatures
     
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  2. markdebur

    markdebur New Member

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    Hi i was getting about 55 miles in summer about 50 miles in winter in uk untill my cat was robbed now no more miles on my prius 2006 as i cant afford to put an OM cat on it so it looks like its going to be scrapped unless an aftermarket one is legal in uk lol
     
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  3. dolj

    dolj Senior Member

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    There is nothing to prevent an aftermarket catalytic converter in the UK. I'm sure @Data Daedalus will be able to assuage your concerns as the same thing happened to him. He had an aftermarket CC installed with good results and no problems with the MOT inspection.
     
    #343 dolj, Feb 19, 2021
    Last edited: Feb 19, 2021
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  4. markdebur

    markdebur New Member

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    great thank you for reply thats good to know cheers
     
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  5. lexidium

    lexidium Member

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    Aftermarket cat is ok in UK.
    MOT do not check emissions for hybrid cars in UK.
     
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  6. lexidium

    lexidium Member

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    60.5 mpg (UK) = 50.4mpg (US) PRIUS 2008 115.000 MILES

    screen.jpg
     
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  7. markdebur

    markdebur New Member

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    thank you good to know
     
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  8. bobodaclown

    bobodaclown Member

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    167K just gassed up and getting 46 mpg, 40 deg in the AM and low 70s in the afternoon, approx 65 a day. What stinks is I can't get more than about 8 gallons of gas in the tank. 5 days then I have to gas up.
     
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  9. KKenney

    KKenney Junior Member

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    You should check your tire pressure, mileage drop with low air pressure.
     
  10. Zeppo Shanski

    Zeppo Shanski Active Member

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    bobodaclown
    ... That gas-tank problem was one of the first glitches I noticed when I got my '05 a coupla years ago. Somebody here clued me in on the fact then Gen-2s have a bladder in the tank to combat gasoline-fume emissions. W-T-F right?
     
  11. kcorb88

    kcorb88 Junior Member

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    I get about 42-44mpg when just driving short distances around town and 45-48mpg when I cruise on the freeway. I live In coastal Southern California so the temperature couldn’t be more ideal for good mpg. I have a 2009 with 133,000 miles on the odometer.
     
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  12. ydpplqbd

    ydpplqbd Active Member

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    Your mpg is about what i got when i
    first bought my Gen2. As time has gone by, i have done the following: i.) learned how to drive better so that my Gen2 maximizes mpg; ii.) slowed done on the interstate to 59mph; iii.) installed low rolling resistance tires; iv.) increased tire pressure to 42 psi; v.) I drive a lot which helps HV battery to stay charged and over time my charge indicator on MFD goes into green more often: vi.) running Shell Rotella sunthetic oil. Last three or four tanks, i have been getting about 54mpg.

    I am considering changing transaxle fluid and replacing with Amsoil Signature Series Fuel-Efficient Synthetic ATF (represented as meeting Toyota's WS ATF standard) and should increase mpg. I have also ordered a block heater with a timer. The block heater should reduce warm-up period and thereby increase mpg.
     
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  13. TMR-JWAP

    TMR-JWAP Senior Member

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    This was from about 2 weeks ago? Was sitting in line at gas station due to the hacker attack. Didn't want to risk running out of gas since I already had 392 miles on that tank!! Current tank is a bit better at 55.8 this morning with ~150 miles.

    2007 Touring with 215kish miles.

    MFD.JPG
     
  14. kcorb88

    kcorb88 Junior Member

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    Whoa that’s great, any special upkeep to retain that mpg? I have new plugs, changed transaxle fluid at 100,000, changed both inverter and engine coolant around 100,000, new engine water pump last year, new brake actuator earlier this year (that one hurt, LOL), and I change the oil every 5,000. I also have noticed the battery is in the green more, I expect a failed hybrid battery within the next three years, but the car is in great shape so I’ll replace and keep driving.
     
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  15. srellim234

    srellim234 Senior Member

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    One thing to remember is that for every 2nd generation Prius getting 51 mpg there's one that is only going to get 35 mpg to offset it. The 2nd generation Prius averages around 43 mpg in real-world reporting at fuelly.com and fueleconomy.gov Besides things the drivers do to nurse the mpg, some cars just deliver better mileage than others and the specific difference in the cars has not been found. So, we take care of the car and just enjoy the drive without agonizing over the numbers. They are what they are.
     
  16. TMR-JWAP

    TMR-JWAP Senior Member

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    No special upkeep at all. I think I've had the car a bit over 4 years now (bought with 143k miles and failed HV battery). Did a bunch of stuff when I first bought it like oil, plugs, coolant, transaxle fluid, front windshield, tires and fixed HV battery). Since then just oil changes, a new 12v battery, transaxle fluid at ~200k, cleaned MAF and TB when I had a P0171 code, and an aftermarket CAT to hopefully prevent theft. My current HV battery was installed a couple years ago and has very early Gen 2 modules manufactured in 2003. Kind of a long term test experiment.

    The majority of my miles are just my daily work round trip. The last few weeks I've been leaving the house about 10 minutes earlier (what a difference a few minutes makes irt traffic!) and I've enjoyed a more relaxing drive. Instead of 80 mph highway speeds, I've been keeping it around 63 on flat areas and uphills and typically <75 on downhills. I also get off highway 1 exit earlier now and use an alternate very low traffic 45mph zone road for the last 5-6 minutes of the drive.

    My typical morning drive is fire up the car and just go:
    1. ~2 minutes in the neighborhood 25 mph zone to get to the main road (20-25 mph)
    2. ~2 more minutes in a 45 mph zone to get to the first main intersection (40-5- mph)
    3. ~9 more minutes in 40-45 mph zones to get to highway (45-52mph)
    4. ~8-9 minutes of interstate highway (63 to 70 mph)
    5. ~5-6 minutes of 45 mph to get to facility parking lot (40-50 mph)
    6. Typically averaging about 27 minutes
    Evening drive home (again just fire it up and go):
    1. ~1 minute to get out of parking lot (10mph)
    2. ~4 minutes to get to first interstate highway (I-77) (45 mph zones)
    3. ~1 minute or so to reach and merge onto interstate highway I-26
    4. then 4, 3, 2, 1 from above with about 5-10 minutes of delay in #4 due to traffic backing up at the I-26/I-20 intersection.

    On the way home I don't do:
    I also get off highway 1 exit earlier now and use an alternate very low traffic 45mph zone road for the last 5-6 minutes of the drive.
    because the traffic pattern stinks and the intersection lights take forever compared to just using the highway.
     
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  17. ydpplqbd

    ydpplqbd Active Member

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    I just filled up today. I went 616.2 miles on the last tank. And, filled the tank today with 10.695 gallons. Working out to 57.6mpg for this one tank based on miles driven and fuel pumped. Average mpg over the last five fill-ups is a couple of mpg lower.

    Today, my MFD mpg was 52.0 which is typical of my experience of actual mpg calc versus MFDmpg. Namely, the MFDmpg on my Gen2 is about eight percent ("8%") lower than calculated mpg.
     
    #357 ydpplqbd, May 28, 2021
    Last edited: May 28, 2021
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  18. Wyoming82070

    Wyoming82070 New Member

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    I just got a 2008 with 210k on it and averaged 48mpg (according to the computer) on a recent 1k road trip with lots of mountain passes. I don't know so much about day-to-day driving. Other had great suggestions, but you might want to check about exhaust leaks too. I had one after a poorly installed exhaust clamp and was averaging on 40mpg. Went right up after I fixed it (and bumped up tire pressure).
     
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  19. stylinnnn

    stylinnnn Junior Member

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    that's pretty much average..no big deal
     
  20. TMR-JWAP

    TMR-JWAP Senior Member

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    Although I don't recall saying it was anything special and was merely stating and displaying FACT, I appreciate the valuable feedback you provide. Unfortunately, your 'feedback' doesn't match reality.

    2007 Toyota Prius MPG - Actual MPG from 561 2007 Toyota Prius owners

    Current tank, which was 55.9 until I had to do an 80mph run to make it to a golf tournament on time yesterday...which I still don't consider to be anything special, and I'm not really trying to do anything "special" to get it, but it's obviously far from 'average', based on 18 million documented miles of just 2007 models. Feel free to look at any of the other years. You'll see very similar mpg curves for all years of Gen 2.

    Now shoo away, and be a troll somewhere else...

    June 25 2021.JPG
     
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