Join Date: Jun 2013
Location: Central Florida
Car Year: 2014
Car Model: Forester Limited
Feedback Score: 0 reviews
I've posted before on this topic but it did not get much of a response, just that others did not have the same issue. I think the OP's description sums it up but I can give more detail from my own experience with my vehicle at 3500 miles. I realize it may be me alone that has this particular issue.
I have found there to be three scenarios with regard to low speed acceleration smoothness, a cold cvt, a warmed up cvt, and then a mystery variable.
Scenario #1 - Cold CVT (fresh start)
There is almost no way to accelerate slowly and evenly. There is a significant bucking that I would describe feeling like an engine hesitation (but it is the CVT). It is very noticeable, passenger heads bobble forward and back at times, and sometimes there are heavy jerks. The only way around this effect is to give a very hard throttle until you reach cruising speed which eliminates/minimizes the bucking but doesn't quite work in my 25 mph neighborhood. Once up to speed however there is no problem, everything is smooth and steady.
Scenario #2 - Warm CVT.
After a significant warm up of an undetermined duration the low speed acceleration bucking effect subsides. It will feel more smooth like others have commented, it is still slightly there but acceptable and easily compensated for with a tad more acceleration. If it could only be like this all the time I would be pleased.
The mystery variable.
The problem in my experience is that the cold bucking effect lasts too long, sometimes well more than 10 - 15 miles. There is no such thing as a smooth drive to the local grocer, it's going to buck and jerk both going and coming, that is until you get to speed then there is no issue (you are no longer accelerating). At other times and for no reason it may smooth out much quicker and be okay, I can't figure out the pattern.
In all cases, once you get up to speed there is no problem, it's smooth and wonderful. The problem is only with trying to accelerate from a stop in any sort of gradual fashion, it's just not a pleasant experience, and especially when the engine/tranny is cold. The one thing that overrides the bucking for me is to heavy foot it off the line until you come up to speed.
I'll be going into the dealer for the first oil change very soon and I will report these symptoms of course but I expect them to tell me that its fine or that they can't find any problem with it. Other than the acceleration issue that I have described it is a wonderful car that drives great and gets fantastic gas mileage. If there was a cure for the low speed acceleration bucking I would be a very happy camper.
(edit: I should add that I'm having no issues at all with deceleration as some folks have noted in other threads.)
Last edited by broken; 08-23-2013 at 09:01 PM.