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Loud in More Ways than One

Discussion in 'Gen 3 Prius Main Forum' started by cycledrum, Mar 19, 2013.

  1. cycledrum

    cycledrum PSOCSOASP

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    Consumer Reports had to go and mention how the Prius engine can be noisy in the cabin at high throttle - I know what they are talking about.

    I usually mosey over to the slow lane(s) coming up on a steep freeway grade, then keep it around 60 mph going up. I tried doing about 65 going up the Dublin grade with 3 others in car only to hear a bunch of engine revving , vvvvvvv, etc... in the cabin yesterday. I wonder if they were amused at that.

    Rented Camry hybrid for 2 hours for only $10 to compare yesterday. It flies over steep grades at 70 mph with no drama from the engine. No wonder - Prius would have to lose 741 lbs. of curb weight to match HP / weight ratio of Camry hybrid. 741 lbs is a lot.

    Popped in a fav CD on way home in Prius, JBL is good, but geez road noise, bad. Didn't think the pavement was so bad there.

    Crazy thing is Camry was reading 45.8 MPG, no fluke. My Prius is currently reading 52.6 mpg. $2k more and 2 gallons of gas per 450 miles doesn't seem too bad a tradeoff for the extra power and zip. Trunk is not too small either.

    We'll see how Accord hybrid stacks up end of this year, then see 4th gen Prius in couple years.
     
    Jon Hagen likes this.
  2. prev93

    prev93 Member

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    Maybe your next car can be a 45.8 mpg quiet Camry.
     
  3. cycledrum

    cycledrum PSOCSOASP

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    Just did the math to figure ....

    Prius would need to be 741 lbs lighter to meet the horsepower to curb weight ratio of Cam Hy LE.

    3042 lbs - (3435/200*134) = 741 lbs. :whistle:

    Two different classes of cars, that's for sure.
     
  4. F8L

    F8L Protecting Habitat & AG Lands

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    The drawbacks to the Camry is that trunk and bland looks. It's weird but I prefer to looks of the Prius over the Camry.

    I just wish the Prius was more like the Camry in all the other ways. :)
     
  5. css28

    css28 Senior Member

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    Yet another installment in the "I wish my Prius were a Camry" saga.
     
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  6. cycledrum

    cycledrum PSOCSOASP

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    Not so much. I can wait it out. Looking forward to Accord hybrid coming this Fall. Hopefully it ranks higher than Camry Hybrid and proves reliable over the years. We'll see how new Prius is in a couple years.
     
  7. Mrpcar

    Mrpcar Active Member

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    Except Camry is ugly! Completely no appeal, absolutely no character. The Prius screams for attention, streamline futuristic shape.
     
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  8. B. Roberts

    B. Roberts Hypah Milah! Ayuh.

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    If the Prius Hatchback had the isolation found in a Camry, it would probably not be able to give you the 52.6 MPG that you reported. Toyota had a design mission for the Prius... max MPG at a somewhat affordable price with reasonable usable room for 5 passengers and gear. To do that, engineers had to make some compromises. Weight had to be kept at a minimum, so isolation materials had to be kept to a minimum... resulting in some engine noise when it's maintaining speed up a hill.

    The engine noise in our Prius is not deafening under load. Now, if Toyota had gone for a really quiet car they would probably have come up with something like the Bentley Continental GT. Under full power it's 6L W12 burble is hardly noticeable and will make that Camry sound like a noisy tin can by comparison. At 5115 pounds, the Bentley will allow almost no noise into the cabin, give you whopping 12.6 cubic feet of load space in the trunk, and yields a whopping 15 MPG EPA combined.

    Bentley engineers didn't make many compromises, but at the same time they came up with a car that can't quite get 51 MPG, although it's really quiet and around $200,000.

    So, a little noise and you can get 51 MPG. It's all about compromise.:)
     
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  9. Sfcyclist

    Sfcyclist Senior Member

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    Something or a lot of things about the Camry just isn't appealing. Clearly Toyota is aware as they have tried to spruce it up.. body kits, wheels.. etc..
     
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  10. Maroon

    Maroon Member

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    Keep in mind that the Camry was refreshed in 2012, while the Prius is basically the same since 2010. Different cars, different missions. Sounds like you bought the wrong car or failed to get a proper test drive in your Prius.
     
  11. Sfcyclist

    Sfcyclist Senior Member

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    It would be interesting if Toyota does come out with a Prius model that has a higher output hybrid motor. That would be a true "Plus Performance" model. Loose a few mpg for performance, that would be perfect in my book. The hatchback feature was crucial for me.
     
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  12. Sfcyclist

    Sfcyclist Senior Member

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    I later refresh doesn't mean it's for the better...
     
  13. cycledrum

    cycledrum PSOCSOASP

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    Ok guys and gals,

    I went over the same grade last night, driving solo at 62 MPH and the engine noise wasn't bad at all, but here is the #1 issue for me for commuting -

    Excessive tire (road) noise on rough pavement. When you come home from a long day at work, it's good to have some more peace and quiet on the highway.

    I don't have a sound decibel meter, but subjectively, the cabin noise gets pretty bad on rough pavement and there's a lot of sections with that around there.

    For Prius to be a great highway vehicle, they do need to knock that noise down a few notches.
     
  14. css28

    css28 Senior Member

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    What tire pressures are you running? Would you willingly take the mpg hit from lower pressures or a higher rolling resistance tire to get your quiet?
     
  15. Sfcyclist

    Sfcyclist Senior Member

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    How long have you owned the Prius G3?... I noticed you have 5899 posts.. and you've just noticed this? I noticed this on my first test drive. Actually on my Persona with 17's, my bet is it's even worse in my car.
     
  16. cycledrum

    cycledrum PSOCSOASP

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    They're about 38 front/36 rear. There may be some very efficient tires that are a bit quieter.
     
  17. cycledrum

    cycledrum PSOCSOASP

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    See my signature. Nov '11.
     
  18. Sfcyclist

    Sfcyclist Senior Member

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    right.. and you just noticed?
     
  19. The Electric Me

    The Electric Me Go Speed Go!

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    Road Noise doesn't bother me.

    I've had quieter vehicles, I've had louder vehicles from both a road noise and engine noise standpoint. Right now, I'm driving a 2010 Honda Fit which I love, but admittedly road noise is loud and the 4 cylinder engine can be heard under strain.

    IMO so what? It's the nature of the beast. As long as it isn't so intrusive it hinders conversation or can't be drowned out by the stereo, I don't really care. Most road noise,- vehicle noise becomes "white noise" after a while. I know it's still exists on my Honda Fit, but I instantly blank it out.

    I'll trade a little ignorable "noisiness" for better fuel economy- any time.
     
  20. retired4999

    retired4999 Prius driver since 2005

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    I had Goodyear comfort treads on my 2005 II made it much quitter, but lost about 2-3 mpg.
     
    cycledrum likes this.