Why a 4spd not 5spd AT - Toyota Yaris Forums

CB900F2 · 01-02-2009, 12:14 PM

Hey guys..

I was wondering why do you think Toyota went with a 4spd AT rather then a 5spd for the Yaris?....

What would the technical reasons be you think?...

The current gen Honda Fit and previous gen uses a 5spd AT for example...

hmmmm...

thanks Guys!

thebarber · 01-02-2009, 01:18 PM

$.

eTiMaGo · 01-02-2009, 02:37 PM

Exactly. Toyota builds these cars, especially the USDM versions, to be as cheap as possible. For example, Japan has a CVT option for some models, and Europe has a tiptronic kind of AT (MMT), but I believe it is still a 4-speed.

gid · 01-02-2009, 05:21 PM

we were talking about that yesterday while looking at YARII at local dealer . Like to see what's new to pass the time and for therapy to see if we can resist the itch

to buy

. Got the Y.T.s

and other withdrawal symptoms at this moment

. Would be nice tho

.

thebarber · 01-02-2009, 05:22 PM

would be nice....but to engineer a new transmission when the 4AT is fine isnt in toyota's best interest....besides, it works better for yaris owners if you ever need to replace the tranny....can grab one from an echo, xA or 1st gen xb as well as yaris....

2006fronty · 01-02-2009, 08:54 PM

Quote:

Originally Posted by thebarber

....can grab one from an echo, xA or 1st gen xb as well as yaris....

Yep, i like the fact that our engine/transmission has been around for a while, replacements or rebuilds shouldn't be that hard to come across

eii · 01-02-2009, 09:03 PM

Quote:

Originally Posted by 2006fronty

Yep, i like the fact that our engine/transmission has been around for a while, replacements or rebuilds shouldn't be that hard to come across

Didnt know that, good to know

Altitude · 01-02-2009, 10:37 PM

The greater question is - why would anyone buy an AutoTrans at all? On any car?

MT FTW!!

ddongbap · 01-03-2009, 02:09 AM

Same reason why a part of Honda modding became so popular.

AT is so much easier to drive when you're lazy, or hate traffic.

Forrest · 01-03-2009, 03:54 AM

Quote:

Originally Posted by Altitude

The greater question is - why would anyone buy an AutoTrans at all? On any car?

MT FTW!!

After almost 50 years of driving all sorts of vehicles, it is nice to have an automatic car. One can grow to appreciate not having a clutch !!!!!!!!!!!!!! I also remember driving cars and trucks with NO power steering, many bad clutches, poor headlight quality, windshield wipers that worked on a vacumn and poor tires.
Cars today are a joy to drive and appreciating the AT is a pleasure for old bones !!!!!

GeneW · 01-03-2009, 06:03 AM

Quote:

Originally Posted by CB900F2

Hey guys..

I was wondering why do you think Toyota went with a 4spd AT rather then a 5spd for the Yaris?....

thanks Guys!

Why would someone experiment with an economy line? If you keep it simple and reliable with your economy line it keeps down warranty costs, tooling and lets you push development costs onto more high profit end products.

Gene

watersoilair · 01-25-2009, 09:16 AM

Wouldn't the 4 speed transmission get poorer fuel economy over speeds of 90km/hr? I was told that 5th gear is like an overdrive of sorts. For instance.

If I were to drive 90km/hr in 4th gear it would definitely be at 3000 no questions asked. If I were driving in 5th gear at 90km/hr it is ~2700rpm. The split seems to happen ~85km/hr when both 4th and 5th gear runs at 2500rpm.
The tach gradually moves up to 3000rpm and above as I drive faster. ~3000rpm at 120km/hr and ~3200 at 140km/hr.

Bob_VT · 01-25-2009, 10:03 AM

It was not too long ago that automatics had two speeds that developed into 3 speeds for a long time...... then came the 3 speed plus overdrive (which is the current 4 speed)..... no need for a 5 speed in an econo box.

Hmmmm the same people who demand the 5 speed auto rarely have any knowledge of what used to be the standard before they were born...........

eTiMaGo · 01-25-2009, 10:04 AM

screw 5-speed, let's see an 8-speed auto from a Lexus in the Yar...

Dorkinheimer · 01-25-2009, 10:09 AM

Quote:

Originally Posted by watersoilair

The tach gradually moves up to 3000rpm and above as I drive faster. ~3300rpm at 120km/hr and ~3500 at 140km/hr.

Over 3000 RPM, it's a very unpleasant drive, if you're taking a long trip.

Same thing with the 2009 manual Corolla, it spins to darn fast over 110 km/h

eTiMaGo · 01-25-2009, 10:11 AM

Quote:

Originally Posted by watersoilair

Wouldn't the 4 speed transmission get poorer fuel economy over speeds of 90km/hr? I was told that 5th gear is like an overdrive of sorts. For instance.

If I were to drive 90km/hr in 4th gear it would definitely be at 3000 no questions asked. If I were driving in 5th gear at 90km/hr it is ~2700rpm. The split seems to happen ~85km/hr when both 4th and 5th gear runs at 2500rpm.
The tach gradually moves up to 3000rpm and above as I drive faster. ~3300rpm at 120km/hr and ~3500 at 140km/hr.

Then again, on the 5 speed manual, we run at about 3000RPM at 100km/h too... I think the gear ratios for AT4 and MT5 are pretty much identical?

thebarber · 01-25-2009, 10:12 AM

typically if they add an extra gear they just add another gear from 2-3

my xrs 6speed had the same 1st as the base 5speed, and 6th was the same as 5th in the 5speed....but the gearing between 1st and 6th were closer than in the 5 speed (*actually first and second might have even been the same as the 5speed and instead of 3rd being really tall (like in the yaris) it was lots tighter....cus nothing beat landing in lift in every gear (and is also the reason that the 2zzge w/ an auto sucked so bad))

IllusionX · 01-26-2009, 09:24 AM

Quote:

Originally Posted by eTiMaGo

Then again, on the 5 speed manual, we run at about 3000RPM at 100km/h too... I think the gear ratios for AT4 and MT5 are pretty much identical?

100kmh is closer to 2700rpm than 3000rpm.

speaking of many speed automatics.. i've driven a 6 speed auto gearbox mini van and a CVT ford freestar. Seriously, i would take the CVT anyday over more speed gearboxes.
It's so much fun to continuously accelerate @ redline than having it jerk all over the place at each gear change.

01-02-2009, 12:14 PM	#1
CB900F2 Drives: 08 Sedan Join Date: Oct 2008 Location: Toronto Posts: 301	Why a 4spd not 5spd AT Hey guys.. I was wondering why do you think Toyota went with a 4spd AT rather then a 5spd for the Yaris?.... What would the technical reasons be you think?... The current gen Honda Fit and previous gen uses a 5spd AT for example... hmmmm... thanks Guys!

01-02-2009, 01:18 PM	#2
thebarber daily driver View User's Garage Drives: the #wrecho Join Date: Jun 2006 Location: Grand Rapids, MI Posts: 5,877	$. __________________

01-02-2009, 02:37 PM	#3
eTiMaGo vroom vroom View User's Garage Drives: lil red 5-door Join Date: Sep 2006 Location: Bangkok, Thailand Posts: 7,744	Exactly. Toyota builds these cars, especially the USDM versions, to be as cheap as possible. For example, Japan has a CVT option for some models, and Europe has a tiptronic kind of AT (MMT), but I believe it is still a 4-speed. __________________ The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ...

01-02-2009, 05:21 PM	#4
gid Drives: '08 Yaris sedan , '08 Liftback Join Date: Oct 2008 Location: Northeast Posts: 643	we were talking about that yesterday while looking at YARII at local dealer . Like to see what's new to pass the time and for therapy to see if we can resist the itch to buy . Got the Y.T.s and other withdrawal symptoms at this moment . Would be nice tho . Last edited by gid; 01-02-2009 at 05:33 PM.

01-02-2009, 05:22 PM	#5
thebarber daily driver View User's Garage Drives: the #wrecho Join Date: Jun 2006 Location: Grand Rapids, MI Posts: 5,877	would be nice....but to engineer a new transmission when the 4AT is fine isnt in toyota's best interest....besides, it works better for yaris owners if you ever need to replace the tranny....can grab one from an echo, xA or 1st gen xb as well as yaris.... __________________

01-02-2009, 10:37 PM	#8
Altitude Drives: '08 LB MT Bayou Join Date: Oct 2008 Location: Colorado Posts: 1,671	The greater question is - why would anyone buy an AutoTrans at all? On any car? MT FTW!!

01-03-2009, 02:09 AM	#9
ddongbap Banned Drives: yw calls me douche and racist. Join Date: Aug 2007 Location: hay Posts: 2,183	Same reason why a part of Honda modding became so popular. AT is so much easier to drive when you're lazy, or hate traffic.

01-25-2009, 09:16 AM	#12
watersoilair Drives: 08-2DR-MT-LB-Red Join Date: Jan 2009 Location: Ontario, Canada Posts: 45	Wouldn't the 4 speed transmission get poorer fuel economy over speeds of 90km/hr? I was told that 5th gear is like an overdrive of sorts. For instance. If I were to drive 90km/hr in 4th gear it would definitely be at 3000 no questions asked. If I were driving in 5th gear at 90km/hr it is ~2700rpm. The split seems to happen ~85km/hr when both 4th and 5th gear runs at 2500rpm. The tach gradually moves up to 3000rpm and above as I drive faster. ~3000rpm at 120km/hr and ~3200 at 140km/hr. Last edited by watersoilair; 07-25-2009 at 03:04 PM.

01-25-2009, 10:03 AM	#13
Bob_VT View User's Garage Drives: 08 Yaris LB Join Date: Oct 2008 Location: Vermont Posts: 1,704	It was not too long ago that automatics had two speeds that developed into 3 speeds for a long time...... then came the 3 speed plus overdrive (which is the current 4 speed)..... no need for a 5 speed in an econo box. Hmmmm the same people who demand the 5 speed auto rarely have any knowledge of what used to be the standard before they were born........... __________________ some people are little slinkies. . . . .they are really good for nothing. . . .but they still bring a smile to your face when you push them down a flight of stairs. Come to the DARKSIDE..... We have candy

01-25-2009, 10:04 AM	#14
eTiMaGo vroom vroom View User's Garage Drives: lil red 5-door Join Date: Sep 2006 Location: Bangkok, Thailand Posts: 7,744	screw 5-speed, let's see an 8-speed auto from a Lexus in the Yar... __________________ The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ...

01-25-2009, 10:12 AM	#17
thebarber daily driver View User's Garage Drives: the #wrecho Join Date: Jun 2006 Location: Grand Rapids, MI Posts: 5,877	typically if they add an extra gear they just add another gear from 2-3 my xrs 6speed had the same 1st as the base 5speed, and 6th was the same as 5th in the 5speed....but the gearing between 1st and 6th were closer than in the 5 speed (*actually first and second might have even been the same as the 5speed and instead of 3rd being really tall (like in the yaris) it was lots tighter....cus nothing beat landing in lift in every gear (and is also the reason that the 2zzge w/ an auto sucked so bad)) __________________

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