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Confirmed: Toyota only reinforced one side of the Prius (photos inside)

Discussion in 'Gen 3 Prius Main Forum' started by E46Prius, Aug 15, 2015.

  1. maurices

    maurices Member

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    I would think that there should be a part number for this part if it is removable as stated above. Great thread, again..
     
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  2. orenji

    orenji Senior Member

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    If it was not for Toyota's money and Mercedes Benz's money, Tesla may not be the company it is today!
     
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  3. The Electric Me

    The Electric Me Go Speed Go!

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    While all this is arguably true.
    I'm still disappointed.

    I think it's a cop out to deflect criticism with the statement of "Everyone Else Does It" or the Red Herring of you can buy a safer car but it won't get 50 mpg. I didn't buy a different car, I bought this one. And I think it's quite possible to make a safer Prius.

    All though it's perfectly arguable that this is Standard Operating Procedure, when it comes to safety I'd like to think Toyota is striving to set standards not just follow them.
    I can't imagine when reinforcing the one side, that somebody, somewhere didn't mention reinforcing BOTH sides. And the only reason for NOT doing so, would appear to me to be financial. One less part to produce, one less part to assemble.

    It "appears" the priority was with passing the test, and getting the marketable higher safety rating, but not actually with making the vehicle as safe as it could be....which IMO is disappointing.

    But my guess is it wouldn't impact the cost of the vehicle greatly, and I doubt the extra weight of one brace would impact the MPG either. Speaking for myself, I'd gladly pay a few hundred more for my Prius, with the idea that it's safer in front end collision for both myself as driver and any occupant also riding upfront.
     
  4. bisco

    bisco cookie crumbler

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    every time automakers improve safety, government responds with stricter standards. it's the chicken and egg. your car is very safe compared to a 1970 vega. even a car designed for safety won't pass a test designed out smart the engineers.
     
  5. Den49

    Den49 Member

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    It may be a false assumption that the right side of the car is less safe just because it does not have a unique object contained on the left side of the car. Both sides of car are not symmetrical.
     
  6. David Beale

    David Beale Senior Member

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    The claim that the current safety systems don't add a lot of weight is just plain wrong. Take a 1970s Datsun 510. It weighted about 2000 lbs. - and it was rear wheel drive, which adds weight. You WON'T find a "modern" car of similar size much under 3000 lbs. The Datsun was "safe" for its time, with "crush zones" etc.

    The safer the car the heavier.
     
  7. wjtracy

    wjtracy Senior Member

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    If Consumer Reports, Motor Trends or some other bona fide consumer advocate says this was an unacceptable short-cut, it could have merit as a disappointment. But right now I am just happy Toyota moved to pass the test.
     
  8. The Electric Me

    The Electric Me Go Speed Go!

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    IMO that's not a fair reason for being OK with this either.

    Still build safer cars.- Let the government continue to raise standards. Who cares? The end result is better safety for everyone.
    Plus the fact that in 2015 cars are safer than in 1970 isn't a valid reason for discounting or ignoring improvements that can or IMO should be made today.

    IMO Automotive safety is a race that as an automaker you NEVER stop running. You don't go "Well we're a whole lot safer than a 1970 Vega, so we don't need to improve".

    And if there is an adversarial nature between automakers and those designing tests to determine safety? That's not an excuse for not striving for improvement either.

    Bottom line to me, is I think with little to no impact on efficiency, nor little impact on overall price of the vehicle, the addition of a passenger side reinforcement brace WOULD make the vehicle safer.
    Every thing else justifying NOT doing it, are just chimerical excuses that could result in injuries and perhaps deaths that could be avoided.
     
  9. cyclopathic

    cyclopathic Senior Member

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    Mitsubishi Mirage with 5MT is 1970lbs. FWD but more space inside too.
     
  10. E46Prius

    E46Prius Active Member

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    Unfortunately, it's not that simple. Those cars are also smaller than today's cars. Safety equipment adds weight (airbags and such) but body in white design can be made more efficient, stronger, and lighter all at the same time. For example the new BMW 7-Series utilizes carbon fiber including structurally from the front bulkhead to the a-pillar, all the way back to the c-pillar. This reduces the amount of steel usually needed while increasing (greatly) strength and torsional rigidity. A great example of reducing weight, increasing strength all while becoming more compact. And yes you can do this with steel too--exotic high and ultra-high strength steels have been very common since around 2005. Cars have been getting heavier largely due to cars are getting bigger. But the materials themselves are becoming more efficient. If not for better materials, our current cars would weigh a lot more all across the board.

    Here's the new 7-Series as an example of lighter=stronger

    http://i.kinja-img.com/gawker-media/image/upload/ohzrojcax8czigzvuwkm.gif

    image15.jpg

    The next Prius will weigh a little more but also be a lot stronger rigidity wise (as a result safer w/ a quieter ride) and get better MPG.

    So it's not as simple as "more safety=more weight" it goes a lot deeper than that.
     
  11. Robert Holt

    Robert Holt Senior Member

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    Let's cut to the chase: is anyone like Priuschat willing to arrange a group buy of this piece for those of us with the 2010-2013 hatchbacks?

    Problem: I cannot locate a parts diagram for a 2015 that will distinctly show me this part and give me an official Toyota part number. (There are all kinds of after market braces being sold that mount every which way on the car, but I could not successfully drill down to the correct Toyota bumper-to-chassis brace or whatever you would properly call it.)
     
    #31 Robert Holt, Aug 19, 2015
    Last edited: Aug 19, 2015
  12. bisco

    bisco cookie crumbler

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    well of course, you have a right to your opinion, and a few people here share it with you. but obviously, toyota, and most other car companies don't. we can only vote with our wallets.
     
  13. cyclopathic

    cyclopathic Senior Member

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    2015 Mitsubishi Mirage with all mandated safety equipment. Sorry for not being clear.
     
  14. DtEW

    DtEW Active Member

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    1. How are you sure that this structural amendment came with no costs to the rest of crash performance? It is completely likely that a bolt-on amendment (much like an aftermarket mod) can modify (or even outright compromise) other aspects of crash performance (eg. increases energy transfer). It is entirely possible that what was decided on was the best compromise in terms of maximizing protection to cover the most likely of accidents.

    2. Crash performance is never symmetrical. You have a steering column in your face; the passenger doesn't. The engine bay has all sorts of non-compressible structures in there in an asymmetrical layout, mounted to (and possibly stiffening) asymmetrical mounting points. If the IIHS does not test for the moderate overlap nor small-overlap on the passenger side, how is anybody sure that the passenger side behaves the same way? So why is anybody so sure the passenger side is now relatively deficient?

    There are way too many assumptions being made without justification. We only know what has been tested. Anything else is just weak conjecture.
     
    #34 DtEW, Aug 21, 2015
    Last edited: Aug 21, 2015
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  15. The Electric Me

    The Electric Me Go Speed Go!

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    From a frame and body standpoint they are symmetrical. I'd be very surprised if the reason only one side was reinforced had anything to do with adding the brace would make it "less safe".

    Of course the only way to really prove this would be to run tests with and without braces on the right side.

    You'd have to prove to me my admitted assumption is wrong.

    You are right though, it is ultimately an untested assumption.
     
  16. bisco

    bisco cookie crumbler

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    i can picture soeone talking on the phone, veering off to the right, slamming into a light pole and...ouch!:eek: double whammy.
     
  17. PriusInParadise

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    Sorry to be late to the party, but there are other improvements that were made to the vehicle in order to improve the small-overlap collision performance. This was not a bolt-on fix.
    In addition to the reinforcement found by the OP, the left A-pillar and floor rail have been reinforced, and the thickness of the floor padding has been increased.
    Considering the platform had already been in production for about 4 years, making changes to improve one aspect of collision performance without unintended degradation of others was surely challenging.
     

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  18. Vman455

    Vman455 Senior Member

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    The 2016 is built on a new platform, Toyota New Global Architecture, that had weight reduction as one of its development goals. So, it's likely the next Prius will be lighter than the current version, not heavier.
     
  19. bisco

    bisco cookie crumbler

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    sure, but why couldn't they do the right corner too? don't they care?
     
  20. CR94

    CR94 Senior Member

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    ""Doing the right corner" would cost far more overall (development costs+manufacturing costs+added fuel consumption, etc.) per life saved.