CVT or Standard AT?

[rickymartin]

Tumitingin-tingin ako ng mga bagong kotse for future getting a brand new car (looking fo AT) then napansin ko itong CVT, ano bang mas okay 'yung normal na AT o CVT? Nagresearch rin ako ng konti at madami akong nabasa na pangit ang CVT. Ano ba difference nila?

[Noel Salisipan]

Tumitingin-tingin ako ng mga bagong kotse for future getting a brand new car (looking fo AT) then napansin ko itong CVT, ano bang mas okay 'yung normal na AT o CVT? Nagresearch rin ako ng konti at madami akong nabasa na pangit ang CVT. Ano ba difference nila?

CVT - for smooth transition of speeds specially at low speed or traffic situation.
Traditional AT - good power transmission between crank assembly but less in smoothness. This is good in climbing & sudden acceleration.

Both have their own advantages & disadvantages kaya kumporme rin sa prefference mo sa car.

[erick_214]

Same options I'm comparing. For me they are still the same ATs, the only huge difference now is the durability of a CVT. I read so many bad durability issues on CVT. Hindi pa kasi tried and tested gaya ng conventional ATs. So if you like smooth and fast shifting go for the CVT but if you prefer durability I would suggest that you choose the conventional AT.

As of this stage, I guess CVTs still have their flaws. Para bang medyo malayo pa sa perfect design compared sa conventional na marami na rin nagawang improvements para maging durable siya.

[JohnM]

Lots of info here: HowStuffWorks "How CVTs Work"

We have a traditional AT (Vios) and a CVT (Mirage) at home. My wife prefers the CVT because of its smoother power delivery. Since I used to drive stick I like the kick of the traditional AT.

[rickymartin]

Tinitignan kasi namin 'yung Corolla Altis at Lancer EX GT-A maganda kasi kaso CVT pareho, so mukhang mag Lancer 1.6 glx or mr na lang. Vios sana pwede kaso hindi gusto ng kapatid ko exterior.

Sabi naman mas maganda sa mga malalaking makina/horsepower ang CVT, don't know how true it is.

[oj88]

A car with CVT will likely be more fuel efficient as it will continuously match the power band and/or the efficiency of the engine at any given speed (within limits of the car, of course). As for performance, all else being equal, a car equipped with CVT will out-accelerate an equivalent A/T car because of this continuous and efficient energy transfer. Of course, assuming that the PCM electronics can be set or is smart enough to distinguish between an eco run and a sport run.

As for reliability, I think it's safe to assume that most modern CVTs that came out in the last 5 or so years are typically more reliable compared to models that came out 10-15 years ago. I keep reading about those older CVTs starting to exhibit issues like noise, judder, sliding or problems typically associated with the CVT belt. Wear and tear is especially accelerated if the transmission wasn't taken cared of properly or if the owner used the wrong transmission fluid kind or type (which is a common mistake).

Traditional A/Ts on the other hand has had time to mature so if you really take good care of it, it may very well last the whole life of the car without issues.

[rickymartin]

A car with CVT will likely be more fuel efficient as it will continuously match the power band and/or the efficiency of the engine at any given speed (within limits of the car, of course). As for performance, all else being equal, a car equipped with CVT will out-accelerate an equivalent A/T car because of this continuous and efficient energy transfer. Of course, assuming that the PCM electronics can be set or is smart enough to distinguish between an eco run and a sport run.

As for reliability, I think it's safe to assume that most modern CVTs that came out in the last 5 or so years are typically more reliable compared to models that came out 10-15 years ago. I keep reading about those older CVTs starting to exhibit issues like noise, judder, sliding or problems typically associated with the CVT belt. Wear and tear is especially accelerated if the transmission wasn't taken cared of properly or if the owner used the wrong transmission fluid kind or type (which is a common mistake).

Traditional A/Ts on the other hand has had time to mature so if you really take good care of it, it may very well last the whole life of the car without issues.

Hmm.. meaning to say mas madaling i-maintain ang traditional AT sa CVT?

[JohnM]

Hmm.. meaning to say mas madaling i-maintain ang traditional AT sa CVT?

Not necessarily. Alagaan mo lang by not abusing it and replacing the ATF/CVTF with the PROPER fluids at the recommended intervals.

Current technology CVTs have a maximum torque limit. Above that back to traditional AT or DCT na. The WRX has 268 HP and 258 lb-ft of torque. It comes with a CVT and for a car that size I think that's enough. It was mentioned before that a Lancer with engine upgrades broke its CVT dahil di kinaya ang output. I can't recall what the numbers were on that car.

[rickymartin]

Not necessarily. Alagaan mo lang by not abusing it and replacing the ATF/CVTF with the PROPER fluids at the recommended intervals.

Current technology CVTs have a maximum torque limit. Above that back to traditional AT or DCT na. The WRX has 268 HP and 258 lb-ft of torque. It comes with a CVT and for a car that size I think that's enough. It was mentioned before that a Lancer with engine upgrades broke its CVT dahil di kinaya ang output. I can't recall what the numbers were on that car.

May issue pala siya sa mga lancer. Mga modern car kasi mga naka CVT, Altis sana kaso CVT rin. SUV naman hindi afford ng budget kapag plus maintenance na.

[niky]

One should also note that "regular" automatic transmissions also have a maximum torque handling capability. If you put twice stock power output through a standard automatic, it will definitely fail. Some automatics start slipping after you've only added seventy to a hundred horses more.

The tuner's job is to give the client what he wants. If he wants more power, damn the transmission... that's what he gets. But in any turbo tuning or install, new clutches, or, with a torque converter automatic, an upgraded torque converter and clutch packs, are a very, very good idea.

[dr. d]

if by maintaining traditional AT and CVT, you mean ATF, then i suppose it's about the same maintenance..
ano pa ba ang puede nating gawin sa mga 'yan? as far as i know, it's "no user-serviceable parts inside".
abuse? nothing automotive is abuse-proof..
heh heh.

[Walter]

if by maintaining traditional AT and CVT, you mean ATF, then i suppose it's about the same maintenance..
ano pa ba ang puede nating gawin sa mga 'yan? as far as i know, it's "no user-serviceable parts inside".
abuse? nothing automotive is abuse-proof..
heh heh.

Take note that CVT fluids are different from ATF. You don't use ATF for CVT transmissions.

[NMuranoZ51]

A car with CVT will likely be more fuel efficient as it will continuously match the power band and/or the efficiency of the engine at any given speed (within limits of the car, of course). As for performance, all else being equal, a car equipped with CVT will out-accelerate an equivalent A/T car because of this continuous and efficient energy transfer. Of course, assuming that the PCM electronics can be set or is smart enough to distinguish between an eco run and a sport run.

As for reliability, I think it's safe to assume that most modern CVTs that came out in the last 5 or so years are typically more reliable compared to models that came out 10-15 years ago. I keep reading about those older CVTs starting to exhibit issues like noise, judder, sliding or problems typically associated with the CVT belt. Wear and tear is especially accelerated if the transmission wasn't taken cared of properly or if the owner used the wrong transmission fluid kind or type (which is a common mistake).

Traditional A/Ts on the other hand has had time to mature so if you really take good care of it, it may very well last the whole life of the car without issues.

Says it all (y)


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[Walter]

Mitsubishi Strada VGT M/T produces 400 Nm of torque while the A/T model is tweaked to produce 350 Nm only albeit at a wider range because the transmission can't handle it.

[tr1ck5h07]

2 years ago, I made a decision to go for standard AT given the choice between that and a CVT. The choice was between a Forester (AT) and an XV (CVT) and I went with standard AT because I knew that it was proven (I've had ATs in the past that didn't give me any problems) and the maintenance costs were lower for the standard AT.

It seems that CVT has proven to be more reliable recently and I would not hesitate to go for one when I purchase my next car in about 3-4 years.

[rickymartin]

2 years ago, I made a decision to go for standard AT given the choice between that and a CVT. The choice was between a Forester (AT) and an XV (CVT) and I went with standard AT because I knew that it was proven (I've had ATs in the past that didn't give me any problems) and the maintenance costs were lower for the standard AT.

It seems that CVT has proven to be more reliable recently and I would not hesitate to go for one when I purchase my next car in about 3-4 years.

Sabagay, matagal-tagal na rin naman lumabas 'yung CVT, siguro naman na ayos na 'yung mga issue.

Might go now with Corolla Altis or Lancer EX GT-A.

[erick_214]

The problem is they added torque converter to the cvt w/c is another system that might break down.

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[JohnM]

The problem is they added torque converter to the cvt w/c is another system that might break down.

The CVT part just changes the ratios. It still needs something to disconnect the tranny from the engine when it is not moving in D.

The notorious Honda CVT used clutches. The new one uses a torque converter.

[k0mpressor]

The CVT part just changes the ratios. It still needs something to disconnect the tranny from the engine when it is not moving in D.

The notorious Honda CVT used clutches. The new one uses a torque converter.

The failing clutches are the number one reason for the shock and judder experiences.

[niky]

The problem is they added torque converter to the cvt w/c is another system that might break down.

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I trust a torque converter a hell of a lot more than a dry clutch pack. The slippage is absorbed by the transmission fluid, rather than the clutches. Which makes the clutches last longer (just keep changing the fluid).

-

Old CVT parts are, as far as I know, surplus. They're supposed to be maintenance free, so the supplier doesn't sell pieces.. just whole assemblies. But if they sell clutch packs already, then that makes buying a secondhand first-gen Jazz CVT a good deal... incredible economy, smooth running.

Ford, by the way, supposedly sells clutch packs for the Fiesta dual clutch transmission... which also uses "dry" clutches.