Darryl Johnson wrote:
> As I said in my original post on this topic: I have heard that Subaru
> does have one of the better implementations of the CVT, including
> having a pseudo manual shifting mode, and I am quite willing to
> believe that this "rubber band" effect is not present on their vehicles.
The CVTs in Nissans have had a long history of complaints.
http://www.nissanproblems.com/trends/cvt/
This one notes the rubber band effect:
http://www.autoguide.com/auto-news/2018/01/are-cvt-transmissions-reliable-.html
And these folks discuss it:
https://www.quora.com/How-can-we-reduce-or-eliminate-the-rubber-band-effect-of-a-CVT-continuously-variable-transmission
Their cure is the age-old "step off the line" with higher RPMs: hold the
brake and rev the engine before taking off (usually in preparation for a
fast start from a red light). Seems like changing the tranny oil helps.
I have a 2018 Subaru Outback with a CVT. I haven't noticed the rubber
band effect. To be fair, I don't often drive that car. However, the
whole feel is different than I'm used to in my daily commuter car (2002
Subaru Legacy wagon with standard automatic tranny). Since neither is a
muscle car, I don't drive them that way. Nevertheless, the 2018 Subie
with its CVT seems more than sufficient when I stopped at a right-turn
entrance to a highway to let me get into traffic. I like it better than
my old 2002 but then I'm going to beat up and risk my oldie in rush-hour
traffic than my new baby.
If you're looking at off-the-line fast starts, quick 0-60 acceleration
with not hesitation, or otherwise gulping down the gas, and you must
have an automatic instead of a manual, maybe get a car with a DCT: 2
clutches, one for odd gears, one for even gears, for smooth acceleration
(no manual jerking) since there is no interruption of torque to the
wheels. Just don't use that car for commuting in the city or stalled in
rush-hour highway driving that moves slower than the frontage road.
It's your play car.
You might find this humorous:
https://www.youtube.com/watch?v=4OSDw-uyP98
One advantage of manuals is more torque can be delivered from engine to
wheels. All automatics have limits of the input torque they can handle
after which they will slip and get damaged. Manuals have a direct
gear-to-gear linkage. There is no direct linkage in automatics of any
kind. It's possible to damage an automatic, any type, if the input side
has more torque than the automatic can handle.
https://www.youtube.com/watch?v=1fPZ9tmQmZQ
If you want to see inside Subaru's CVT:
https://www.youtube.com/watch?v=34hS9691L04
I've noticed drivers used to old or standard automatics don't like the
CVT will rev up and maintain an RPM as the car is accelerating. They're
used to the RPMs revving up, hitting a peak, there's a jolt to shift
gears, and RPMs start lower and rise again to the next shift point.
They're used to hearing the RPMs rev up as they accelerate, not the revs
go up immediately and then hang there throughout the acceleration.
Instead of feeling the revs and watching the RPM gauge, they should just
watch the speedometer to see the rate the car is accelerating. Forget
what you're used to sensing through your butt for its trained memory on
sensing how the standard automatics worked.
One thing about Subaru is that they will deny problems despite mountains
of evidence. Instead of putting in the sportier gasket that has ribs to
fit inside grooves in the engine block, they denied the problem until
forced and their solution was to use an engine leak in their "special"
coolant to plug the holes. I had to do that on my 2002 Subie Legacy.
Once the oil is noticed on the block, you need to get the gasket
replaced before coolant gets inside to ruin the pistons and cylinders.
Rather than retool their assembly line to use the better gasket, they
hid the truth and then went to a stopleak solution (rolls eyes). Subaru
is not immune to the antics evidenced by every auto maker to cover their
mistakes. While I like Subies, I didn't want to present a blind fantasy
view that they do no evil.
https://www.forbes.com/sites/jensen/2017/07/07/facing-complaints-subaru-offers-extended-warranties-on-1-5-million-vehicles/#12bbd08279dc
Also see:
http://www.subarucomplaints.com/trends/cvt/
If the CVT stalling were admitted, the feds would force a recall and
repair of ALL models. By Subaru extending the warranty, they avoided
the high cost of the recall to repair all vehicles to only those where
the customers complained about a problem. In this case, being proactive
(recall repairs on all) would be far more expensive the being reactive
(warranty repairs on few). Subaru getting tricky again. From that
article, looks like I need to make sure to do the maintainence (fluid
change) on the CVT since I'm in the highest "pain rank". Luckily that
car is the one that gets the least mileage. CVTs require due deligence
on maintanence.
Now go do the same level of research on CVTs in other brands and you'll
find problems there, too. Nothing is perfect.