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- 2023 CX-5 Premium; 2018 Mazda 3 GT hatch
Are you prepared to argue with this kid? https://www.youtube.com/watch?v=cb6rIZfCuHI
Not me!(spin)
Not me!(spin)
For all you CVT-haters...
- Thread starter paris1
- Start date
Just compare the Accord's CVT with the 6 speed Manual. The Manual is much faster. The CVT is grwat for mpgs though. VW's DSG was the best automatic I've driven though. Its like having a professional race car driver manually shifting perfectly each time.
Mazda's Skyactiv automatic tranny is probably the smoothest I've driven.
Mazda's Skyactiv automatic tranny is probably the smoothest I've driven.
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- 2023 CX-5 Premium; 2018 Mazda 3 GT hatch
Did you watch the video? He covers these points. Stronger versions of CVTs probably are not being developed because there is no perceived demand for them in high performance road cars.
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- 2023 CX-5 Premium; 2018 Mazda 3 GT hatch
Actually, it's a common auto journalism observation that CVTs seem to work better with larger (6 cyl) engines than 4 cyl. Seems the less torque they have to work with the more driveability issues result (within limits, of course).
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- Plano, Texas, USA
Not trying to argue with the kid mathematically, but we can with our real world experience on CVT.
CVT, like Wankel rotary engine, looks good on paper, but has known reliability issues in the real world! Older CVT with rubber belt is definitely very poor on reliability. Since it was replaced by metal chain, the longavity has been improved.
Based on its design theory, I've no doubt on fuel efficiency with a CVT. In the real world experience, I was impressed with it when I drove a Nissan Stanza rental. But sudden acceleration is an issue with a very slow "down-shift" due to its design nature. Of course based on all the complaints, the reliability is still something leaves much to be desired.
I realize CVT will be here to stay for its fuel efficiency nature due to fuel economy mandate by CAFE standards. Just hope we can always have other options to choose such as our unique SkyActiv-Drive transmission.
A lot of opinion in my CVT statements but I also have 7 quads and snowmobiles with CVTs.
Inventors Dilemma (Clayton Christensen). New technologies enter at the low end and are prone to problems but serve a low end of the market. Then they get better and start to go upscale. I like the CVT implementation on the Subaru Forrester, but the CX 5 transmission today is better. In a few years, all the light car transmissions may be CVT.
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- 2023 CX-5 Premium; 2018 Mazda 3 GT hatch
I think he probably meant Sentra.
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- Plano, Texas, USA
Sorry, not Stanza, I meant Altima...
Our family of four with luggage drove a CVT equipped Altima rental from LAX to San Diego for friend son's wedding. The gas mileage reached almost 40 mpg at mostly 80 mph with occasional stop-and-go traffic. Really impressed!
Interesting... We rented a Corolla with a CVT which was very responsive. I drove it for several hours before I realized it wasn't a conventional automatic. My guess is that some manufacturers spend more time tweaking the software.
The problems with CVT in my opinion, is the steel belt that many report breaking at around the 100,000 that destroys the entire transmission and is out of warranty for repair. I suspect the technology is in the development stage just like automatic transmission was in the decades after its development. I drove the Nissan Rogue and I didn't like the loud noise and the way the car acted in an acceleration. I suppose one could go to the owners forum and see the comments about CVT.
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- Plano, Texas, USA
Slow "down-shift" has nothing to do with controlling software, but it's the nature of the CVT. It takes time to move belt or chain between two cones, especially during one-step bigger gear-ratio changes.
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- Plano, Texas, USA
CVT, like Wankel rotary engine, is not new. CVT was implemented into a car as early as in 1896! It was the longivaty of the belt stalled the development until steel chian and electronic control were implemented which pioneered by Fuji Heavy Industries and used in the Subaru Justy in 1987.
I understand the mechanics. It's been a while but my recollection of driving the Corolla for nearly 200 miles on New England's back roads was that it was very responsive. If I wanted rapid acceleration - such as it was - I'd mash the pedal to the floor and the engine would be in the sweet spot for max performance right away.
That is what I find interesting with automotive applications... it seems repairs bills are the same as other ATs. On powersports equipment with CVTs...you snap a belt and replacement is $50-$100 to get you going again.
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- Plano, Texas, USA
Nissan and Toyota have their own designs on CVTs. It appears Toyota has done a better job than Nissan on CVT real-world application.
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- 2023 CX-5 Premium; 2018 Mazda 3 GT hatch
So does Honda and, from everything I've read, operationally, their's is state of the art (aside from some teething problems).
