Engine break-in period?

Discussion in 'Gen 4 Prius Main Forum' started by FuriousPrius, Nov 23, 2021.

  1. FuriousPrius

    FuriousPrius New Member

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    How long is the break in period for a brand new Prius? Mine just hit 5,000 miles, and I'll be honest, there were times where I absolutely floored it. Will this hurt the engine? Does the fact that the engine may only have ran for maybe 70% of those 5,000 miles also prolong the required breakin period?
     
  2. alanclarkeau

    alanclarkeau Senior Member

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    Just drive it.

    READ THE MANUAL!!!

    Tyres generally needed 100 miles to bed in before high speeds.

    Brakes, the manual says 200 miles.

    Manual says about engine - For the first 1000 miles (1600 km)
    • Do not drive at extremely high speeds
    • Avoid sudden acceleration
    • Do not drive at a constant speed for extended periods.

    The rest of the car - nope.
     
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  3. orangecones

    orangecones Junior Member

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    ^ - basically that. As long as for the first 1k miles you didn't flog it too hard, or did a steady state 65 mph highway run to the next state and back, you're fine. After 5k - just drive the damn car already.
     
  4. 228Prius

    228Prius New Member

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    The manual actually says 1000km as per my recollection of the 2022 Prius manual. You are good to do as you wish.
     
  5. vvillovv

    vvillovv Senior Member

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    Are you asking about a 2022 Prius? or a 2022 Prime LE trim?
     
  6. Mendel Leisk

    Mendel Leisk Sand Pounder

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    Yeah, second this. Anyway, visual aid, page 210 of 2016 Prius Owner's Manual, in the glove box, and/or available for download as a pdf:

    upload_2021-11-24_6-55-3.png
     
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  7. ETC(SS)

    ETC(SS) The OTHER One Percenter.....

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    Hate to break it to you pal, but when you "floor" most modern cars you aren't "flooring" it at all, but rather you're sending a request to the engine room for more power, since Priuses (like most cars now) are 'fly by wire'.
    Besides, with the tractor-like rpm of the Priuses, it's not like Wide Open Throttle starts are going to over-rev an Atkinson mill anyway.

    One can (and I have) put a brick on the accelerator pedal of a Prius....go inside. Drink a cup of coffee, and come back outside, and you will not have "hurt" the car at all.
    Much.
    DON'T EVER buy a rental car ro fleet vehicle. :D

    Humans do not build engines these days, Robbie the Robot does.
    They are are fully tested at the plant before Robbie's cousin, Robbie puts it into the not-yet-a-Prius in Aichi Japan...or wherever they build them today.

    RTFM.
    (Read the.....er....Factory Manual)
    Lots of good info in there....especially in the Warranty and Maintenance guide, which is core and key to saving even more money at the repair shop than the Prius will save you at the pump, which is something that many new car drivers get completely wrong.
    You don't have to know HOW to do the maintenance, just WHAT needs to be done and when.

    There is value to doing what the manual tells you to do, but in the end Priuses are built to a specific life cycle, which seems to be something in the neighborhood of 20 years and 250,000 miles.
    Most people who but 'break-in' miles on their car will bail out in the front nine.
    Priuses are OEM warrantied out to a maximum of 8y(?) and 125,000 miles which means that THEY are betting their money that the car will not require major work before then no matter HOW you treat the car.

    Good Luck!
     
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  8. alanclarkeau

    alanclarkeau Senior Member

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    I copied that out of a US 2019 Manual.
     
  9. FuriousPrius

    FuriousPrius New Member

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    ok I see. I'll take a look at the owner's manual as well.
     
  10. AzWxGuy

    AzWxGuy Weather Guy

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    I refer back to my owners manual quite often. So much technology, and who can remember what all is on those 740 pages. And then there is the Navigation manual...
     
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  11. Mendel Leisk

    Mendel Leisk Sand Pounder

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    PDF version of the Owner's Manual can be easier to find things in; searching for text strings beats thumbing through the paper tome. Toyota Tech Info's the site I get them from; there's another site also offering the manuals, saying "Toyota Owners", something like that?
     
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  12. orangecones

    orangecones Junior Member

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