Even some Ford pickups have them. They sound pretty weak to me.
What's up with all the Continuously variable transmissions?
- Thread starter Murray20c8
- Start date
Never driven one but test reports always pan them for noise & driveability. They get somewhat better gas mileage...I think that's the only reason auto manufacturers are using them. They cost a lot more to repair vs a traditional auto, if you have issues with them. We have 2x Subaru's...they went fully with CVT's some years ago as they're not big enough to be able to offer multiple transmissions - ours are both manual so not an issue, but I'd be hesitant to buy an auto Subaru because of this.
A friend who is a mechanic always said that he didnt think much of CVT's but recently bought a new Subaru and says other than the fact that it has paddle shifters which he admits is a bit ridiculous he says otherwise you wouldn't know the difference. When I think of a CVT with paddle shifters it reminds me of some EV's that go " varoom" using a recording, lol.
- Thread starter
- #4
I understand (whether right or not, it's what I heard) that the law requires EV's to broadcast noise so the pedestrians can hear them coming. lol.
Probably a good idea given how quiet they can be. Tesla was ahead of the curve on this .......
Only when reversing. afaik
Found this . But I had one go past me in a parking lot last week and all you could hear was the snow crunching under the tires so who knows.....
Yes, electric vehicles (EVs) and hybrids are required in many countries to emit artificial sounds at low speeds for pedestrian safety, particularly to alert the visually impaired.These systems, known as Acoustic Vehicle Alerting Systems (AVAS), address the near-silence of EVs that can increase collision risks. Key ReasonsQuiet operation at low speeds below 20-30 km/h reduces detectability by pedestrians relying on sound. Regulations mandate sounds that vary with acceleration, deceleration, or direction, typically 43-64 decibels. Regulations by RegionCanada requires AVAS on all new light-duty hybrids and EVs since December 2022, aligning with US and UN standards. In the US, NHTSA mandates sounds for vehicles under 30 km/h, including reverse, since 2019. Europe has required it for new models since 2019 and all since 2021. Manufacturers design unique sounds meeting volume and frequency rules, often continuous with pitch changes.
Dave91TM
Power User
The post started with CVT's and is now discussing EV noise. Reminds me of some meetings at work.
Regarding CVT's I understood they were terrible in early Nissans and others, and some mechanics have said never buy. It seems that now every manufacturer has them so I'm assuming that newer ones might be OK. Same with turbo charging small engines. At first they were problematic, but now everyone has them. I wonder if its all a bean counter marketing thing? Many car buyers are gizmo driven and told its better with a Turbo and a CVT (read cheaper to build, and bean counters don't care about reliability), plus you get all the nannies and "connectivity " features. A vehicle is meant to be a mode of transportation ,not a freaking light show connected toy, that requires the operator to pay attention.
Don't talk about mileage. My old normally aspirated V8, manual transmission vette gets 9 L/100 on the highway. I don't see any of the CVT Turbo vehicles doing much, if any, better.
There my TMR (Thursday Morning Rant) is done and I feel much better now.
Regarding CVT's I understood they were terrible in early Nissans and others, and some mechanics have said never buy. It seems that now every manufacturer has them so I'm assuming that newer ones might be OK. Same with turbo charging small engines. At first they were problematic, but now everyone has them. I wonder if its all a bean counter marketing thing? Many car buyers are gizmo driven and told its better with a Turbo and a CVT (read cheaper to build, and bean counters don't care about reliability), plus you get all the nannies and "connectivity " features. A vehicle is meant to be a mode of transportation ,not a freaking light show connected toy, that requires the operator to pay attention.
Don't talk about mileage. My old normally aspirated V8, manual transmission vette gets 9 L/100 on the highway. I don't see any of the CVT Turbo vehicles doing much, if any, better.
There my TMR (Thursday Morning Rant) is done and I feel much better now.
The post started with CVT's and is now discussing EV noise .The post started with CVT's and is now discussing EV noise. Reminds me of some meetings at work.
Regarding CVT's I understood they were terrible in early Nissans and others, and some mechanics have said never buy. It seems that now every manufacturer has them so I'm assuming that newer ones might be OK. Same with turbo charging small engines. At first they were problematic, but now everyone has them. I wonder if its all a bean counter marketing thing? Many car buyers are gizmo driven and told its better with a Turbo and a CVT (read cheaper to build, and bean counters don't care about reliability), plus you get all the nannies and "connectivity " features. A vehicle is meant to be a mode of transportation ,not a freaking light show connected toy, that requires the operator to pay attention.
Don't talk about mileage. My old normally aspirated V8, manual transmission vette gets 9 L/100 on the highway. I don't see any of the CVT Turbo vehicles doing much, if any, better.
There my TMR (Thursday Morning Rant) is done and I feel much better now.
Blame the Mods ......
- Thread starter
- #10
It is a continuously variable thread.The post started with CVT's and is now discussing EV noise .
Blame the Mods ......
Most are.
Dave91TM
Power User
And variety is the spice of lfe.