Prius Performance Query

agill · 10-24-2005, 08:03 PM

Quote:

Originally posted by Brian K@Oct 24 2005, 07:30 PM
OK, now that you all have discussed the stock Prius, I'll go in another direction.

As far as I know Prius now holds the land speed record for a hybrid. That may have changed without my notice, but if so it just changed recently.

Toyota added more cells to the battery to goose the voltage and I don't know what else, probably rewrote a few lines of the software too. Anyway, they got 130 mph out of it.

[snapback]145040[/snapback]

Thats cool
Just wondering why the US brochure does not specify the max speed, while the UK brochure does. Guess someone did not think about it.

priusham · 10-24-2005, 08:09 PM

Frankly, if you are worried over maximum speed, I'm not so sure that that the Prius is the right car for you. No offense! It really is not the car for everyone.

If you do choose to go through with purchasing a Prius, you'll soon enough get Prius MoJo and quit stressing about maximizing your speed and start stressing over maximizing your MPG.

engunneer · 10-24-2005, 08:15 PM

Probably a liability thing in the US. There isn't anywhere I know of that you're allowed to go over 100mph. The fastest Highway I've been on was 80. Just imagine the lawsuit...

Person: "The brouchure said I could go, over 100"
Judge: "The speed limit sign said 60!"
Person "But the brochure! It's Toyota's Fault"
Judge: "I see... well, no more Toyotas in the US. You are free to go. Court Adjourned"

Isn't the US legal system great?

rutafox · 10-24-2005, 11:07 PM

Quote:

Originally posted by engunneer@Oct 24 2005, 05:15 PM
Probably a liability thing in the US. There isn't anywhere I know of that you're allowed to go over 100mph. The fastest Highway I've been on was 80. Just imagine the lawsuit...

Person: "The brouchure said I could go, over 100"
Judge: "The speed limit sign said 60!"
Person "But the brochure! It's Toyota's Fault"
Judge: "I see... well, no more Toyotas in the US. You are free to go. Court Adjourned"

Isn't the US legal system great?

[snapback]145059[/snapback]

There is no speed limit... it's just posted how fast you can drive for free. Anything over that just costs more.

agill · 10-24-2005, 11:37 PM

Quote:

Originally posted by priusham@Oct 24 2005, 08:09 PM
Frankly, if you are worried over maximum speed, I'm not so sure that that the Prius is the right car for you. No offense! It really is not the car for everyone.

If you do choose to go through with purchasing a Prius, you'll soon enough get Prius MoJo and quit stressing about maximizing your speed and start stressing over maximizing your MPG.

[snapback]145055[/snapback]

Its not like i am really "worried" about max speed. As i had mentioned in the opening post, it was just out of curiousity because i had seen the posted upper speed of the Prius in the UK brochure, but not in the US brochure. And i am quite sure i have made the proper choice by opting for the Prius. I am not much of a speeder myself, and i quite agree with you that i will pay close attention in achieving max MPG once i start driving the Prius. In fact even now I try not to go over 75 since it reduces my mileage.

Wayne · 10-24-2005, 11:41 PM

Quote:

Originally posted by agill@Oct 24 2005, 11:37 PM
In fact even now I try not to go over 75 since it reduces my mileage.
[snapback]145141[/snapback]

I personally wouldn't even go 75, unless that's the speed limit in your state. My recent mileage tests showed almost a 1:1 relationship between MPG and MPH at highway speeds, so driving 5 MPH less will net you 5 MPG more. Driving 10 MPH less is even better!

oly_57mpg · 10-25-2005, 01:39 AM

Quote:

Originally posted by PeteB+Oct 24 2005, 05:56 PM--><div class='quotetop'>QUOTE(PeteB @ Oct 24 2005, 05:56 PM)</div>

Quote:

The software limits the top speed to 106 mph (99 mph for the Classic) to protect the electric motors and ICE from exceeding an rpm limit specified by Toyota engineers.
[/b]

Is there a record of that in the FSM? I've taken mine up around that range easily...

Quote:

Originally posted by PeteB@Oct 24 2005, 05:56 PM
European Prius speedometers tend to be about 7% over reading (e.g. at a true 70 mph, speedo reads 75 mph). European law dictates they MUST over read by a certain amount (not 7% though), but this error rate is common in cars over here. Several owners have reported seeing 113-114 mph indicated which equates to about 106 with this error factor taken in account.

114+-3 MPH on the spedo is about right...

Quote:

Originally posted by PeteB@Oct 24 2005, 05:56 PM
Because it is an artificial limit, the car produces strong acceleration right up to its top speed.

and then some...

<!--QuoteBegin-PeteB@Oct 24 2005, 05:56 PM
It seems European spec Prius have a stiffer suspension than US models, and they are reported to be acceptable stable at this speed.

The 05 USA model handles just fine at high speeds. Better than most US car manufacturers that I have driven.

tumbleweed · 10-25-2005, 01:56 AM

I think this is what Brian K. was refering to.

http://www.toyota.com/hybridsynergyview/20...bonneville.html

Dosen't sound like they did all that much to it. With more extensive modifications it could (will) be much faster.

Strong Bad · 10-25-2005, 04:40 AM

Quote:

Originally posted by Brian K@Oct 24 2005, 07:30 PM
OK, now that you all have discussed the stock Prius, I'll go in another direction.

As far as I know Prius now holds the land speed record for a hybrid. That may have changed without my notice, but if so it just changed recently.

Toyota added more cells to the battery to goose the voltage and I don't know what else, probably rewrote a few lines of the software too. Anyway, they got 130 mph out of it.

[snapback]145040[/snapback]

The Bonneville Prius's modifications were limited to the inverter, HV ECU, final drive (differential) and ICE...no battery modifications were made. Actual top speed during the week was 139.xxx mph , record is at 134.xxx mph by the Prius. There is to my knowedge only 1 other Prius in the US capable of those speeds, all others are limited to 106 by the ECU. That speed is limited purely by the ECU and not physics ie: more speed is there, the ECU just won't let it happen

aaf709 · 10-25-2005, 12:05 PM

Quote:

Originally posted by tumbleweed@Oct 24 2005, 10:56 PM
I think this is what Brian K. was refering to.

http://www.toyota.com/hybridsynergyview/20...bonneville.html

Dosen't sound like they did all that much to it. With more extensive modifications it could (will) be much faster.

[snapback]145180[/snapback]

You can read more about the mods at
http://hybridcars.about.com/od/news/...slandspeed.htm

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10-24-2005, 08:09 PM	#12
priusham Join Date: Jul 2004 Location: Michigan - land of everlasting snowflake icon! Posts: 525 My Car: Model: Package: Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	Frankly, if you are worried over maximum speed, I'm not so sure that that the Prius is the right car for you. No offense! It really is not the car for everyone. If you do choose to go through with purchasing a Prius, you'll soon enough get Prius MoJo and quit stressing about maximizing your speed and start stressing over maximizing your MPG.

10-24-2005, 08:15 PM	#13
engunneer Prius Hacker Join Date: Mar 2005 Location: Seattle, WA Posts: 302 My Car: Model: Package: Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	Probably a liability thing in the US. There isn't anywhere I know of that you're allowed to go over 100mph. The fastest Highway I've been on was 80. Just imagine the lawsuit... Person: "The brouchure said I could go, over 100" Judge: "The speed limit sign said 60!" Person "But the brochure! It's Toyota's Fault" Judge: "I see... well, no more Toyotas in the US. You are free to go. Court Adjourned" Isn't the US legal system great?

10-25-2005, 01:56 AM	#18
tumbleweed Senior Member Join Date: Oct 2005 Location: Eastern Oregon Posts: 1,692 My Car: 2010 Prius Model: V Package: Adv. Technology Thanks: 33 Thanked 104 Times in 84 Posts Friends: 0	I think this is what Brian K. was refering to. http://www.toyota.com/hybridsynergyview/20...bonneville.html Dosen't sound like they did all that much to it. With more extensive modifications it could (will) be much faster.