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How Good is the CVT Transmission??

191K views 161 replies 73 participants last post by  KSKarl 
#1 ·
My first time posting to this forum, but I have a fundamental transmission question for the members. I plan to be a Subaru owner in the very near future, probably an Outback, or possibly a 2014 Forester. For handling mountain grades, with extended downhill sections, can the CVT be shifted down to retard the vehicle so you don't have to ride the brakes so hard? The 2.5 models come with the CVT, whereas the 3.6's come with a conventional 5 speed auto w/ paddle shifters. My concerns are tending me to go for the 3.6 just to get away from the CVT. I see where the mileage seems to be better with the CVT, but I worry about slippage and ineffective downshift control. I plan to do some light trailer hauling (1600 lbs) in addition to general highway and errand running use. Do these CVT's do a decent job? My Ford Superduty has the Tow/Haul mode which really works great, so this is kind of setting my expectation.

Thanks for any info and experience you may offer.

Infidel
 
#2 ·
Well to start, the CVT is really great at what it does which is deliver power and efficiency. A lot of carmakers are switching to direct injection motors to increase power and mpg but they are using the same transmission. Even with 6 or 8 gears, the conventional automatics aren't as good as a cvt. Granted, a cvt is a different experience as you will not really feel any "jerks" as the car shifts gears, which is commonly why people thing that cvt's are slow. Sure they arent hot rod accessories, nor will they ever be, but the transmission will always be in the location where the most power and efficiency will be for the speed you are going.

On to specifics, the outback has paddle shifters that you can manually row the gears in a simulated 1-6 speeds, or you simply use the paddle to downshift when you need it, and the car will override and return to fully CVT automatic mode once you have reached a consistent speed. The CVT will also increase power if you floor it, but dont expect a downshift feeling. The 5eat is as good as any 5 speed auto, so thats a fine choice also. The new forester does not have paddle shifters in the non-turbo mode, but it does have hill decent control and a "low mode". It also has "x mode" which is pretty creative as it basically holds the CVT in high ratio gears and retards the gas pedal input for very precise control in low traction situations. Think of it as a simulated 4x4 low mode.

For your purposes, the outback will be fine with the CVT. The paddle shifters will do exactly what you need. If you want even more control, the forester turbo has paddleshifters as well with a 6 speed OR 8 speed simulated manual mode which may be even better for towing.
 
#3 ·
I'm a first-time Subaru owner, and very happy with my CVT. After trying out the paddle shifters in various situations, I found that their best use is going downhill. On uphill grades, the CVT keeps your speed without obvious shifting - it just keeps the engine speed at its best point. And downhill it keeps the speed down to wherever you want it. I was on a steep winding road and found I could just downshift to 2nd or maybe 3rd to keep my speed. And the response with the paddle shifters is instantaneous.

I have been very impressed with the OB and CVT after 37K miles, with great gas mileage and absolutely no problems.
 
#5 ·
Comparing to my Prius, the Subaru CVT behaves and feels more like a regular transmission than a CVT. The amount of torque available at a given engine/electric motor speed and combination may have some effect, but basically on the Prius it's:
1. Electric motor (quiet)
2. Combination electric motor and gas engine (loud)

There doesn't seem to be a middle setting. When I step on the gas a bit, the engine roars and the car pokes along.

The Outback seems to have a different torque distribution, and lightly pressing he gas makes it behave and sound better. It likes to downshift and hold at a "lower gear" unlike the Prius, which really prioritizes fuel economy over everything else.
 
#7 ·
I do the Sacramento to Tahoe run quite a bit. 8000+feet elevation and depending on which road pretty good twisties up and down.

The CVT w/paddles works very well with downshifting and engine braking in those conditions. Not worth beans for upshifting IMO. The only problem I've had using them downshifting is the idiots behind me don't realize I've slowed down without a brake light and they've almost rear-ended me several times.
 
#8 ·
I love our Outback gets great gas milage 25 on average up to 34 on flat hwy
I use paddles for down shifting but like someone posted, idiots follow too close and don't see the brake lights so be careful
Unfortunately we began having issues recently with vehicle almost jerking while accelerating and have appointment with dealer
After researching seems like a few have similar issues

I'm hoping its just a flash resetting on computer and not the cvt slipping like I suspect

Heavy acceleration or uphill load seems to bring it out , not a happy feeling

We take good care of the car no 4x4 but hey it's a Subaru and its supposed to be able to take it
Can sometimes track the Hwy like it has its own mind taking a little work to keep it on the straight and narrow, others have posted the same issue

I like the feel of the cvt,s smooth acceleration though its different and takes a little getting used to but I think it's great

I would do more research though before dropping $30k or more and finding out they have issues they can't fix or are not willing to admit there is a problem
 
#9 ·
I've got a 2013... I love the CVT.. I've never owned a traditional automatic, I always bought manual transmission vehicles...

It does great going down the hill.. I'd say the CVT under normal circumstances has slightly less engine braking than a MT because if you take your foot off the throttle it pretty much instantly goes to it's longest gear ratio, but if you tap the downshift paddle a couple of times it acts just like a manual and makes it easy to descend steep grades without using the brakes much.

Can't say anything about towing but the car is great in snow, it takes snowstorms that were stressful and makes them fun driving days.

The smooth feel on acceleration of the CVT is great.. most automatics shift like a drunken teenager, the CVT feels like an expert driver trying to be smooth with a manual transmission. (Though heck it is impossible to accelerate hard with a MT and be as smooth as the CVT) The CVT actually behaves intelligently feeding throttle in on a corner exit too, there is no sudden "bang" and a downshift right at the worst time.
 
#10 ·
I have towed many trailers over the years with various cars including the older Subarus and the new one with the CVT. 1600lbs is within what I like to call the sweet spot but starting to get into the heavy side of that sweet spot for basically all the Subarus given their cooling capacity and running gear etc. Having said that I've towed 1700+lbs many times with the CVT the prior car was the 2.5 Legacy GT non turbo with the 5spd MT which was great but lacked cooling ability for the long climbs in hot temps with anything beyond about 1000lbs.

The new Gen4 cooling system is far far better and the CVT is proving to be pretty dang nice for the tow effort given for the climbs you really don't have any flat spots like you get with the fixed gear autos or even the manual you just pick the speed that works best for the climb and temps etc and just plug along.

The really big deal is the outside temps! I'm in Ca and there are a few places we go in the summer where it is common to see 110 degree temps and very steep climbs. Which case my summer time camping rig set up was 1300lbs or less empty trailer weight which case the trailer I ended up with is 900lbs empty. The CVT hardly notices it. I've hauled the same trailer over the I5 Grapevine with about 700lbs in it +900 and the CVT and 2.5 easily did the run with no issues however it was in the 60's temp wise not a hot trip. Regarding the climb out of LA 3200rpm had us running between 63mph and 50mph the whole crossing which is very respectable given we had plenty of extra juice to pick up the pace when needed.

It's no f250!!! But those of us who have towed with the big pickups are smart enough to know this. My boat runs 1700lbs empty weight with trailer behind the car and we have hauled it packed with camping gear and three adults one child +dog up past Auburn Ca up I80 which has some fair climbs in 80 degree temps and the OB and CVT handled it beautifully we even got a trip average of 23mpg on that trip. My old 5spd 2.5 could only do that trip with me solo and the boat empty cooling was just not there to keep things cool. The 2010 with CVT never showed any sign of getting even warm with a much larger load. The steepest climb is a short one about a 6% up to the lake and the 2.5 with CVT held the 45mph speed limit easily could have gone faster. The old 5spd 2.5 had plenty of power for that climb also but cooling was the limiting factor always was with the old car.


My only caution would be high drag trailers tall box trailers - hot temps and long climbs when your 1500lbs and up.

The owners manual has a cooling system note and limitation listed

CVT is 1350lbs for 104+temps and 5+ mile climbs
The 5spd AT is 1500lbs same conditions
The MT 6spd lists your limit of 2700lbs but I can promise you 2700lbs 104+ temps and 5+mile hard climb you'll run out of cooling capacity before you run out of power.

The longer wheel base on the Legacy and OB make for some really nice towing and handling with the trailer by the way. One of the reasons I almost always haul the trailer with the Subaru over even our Sequoia the subaru just does it well with better mileage and is a nicer drive.

Short hauls 2000lbs is doable in mild temps. I found my 1700lb boat to be about where the limit is for the longer road trips go much heavier than 1700lbs and you do find your self wanting a bigger vehicle for those really windy sections of the trip or when the temps get hot and you have a climb ahead of you etc. But keeping it under 1700lbs seems to really be the ideal towing weight range for any of the subarus.
 
#11 ·
I have towed many trailers over the years with various cars including the older Subarus and the new one with the CVT. 1600lbs is within what I like to call the sweet spot but starting to get into the heavy side of that sweet spot for basically all the Subarus given their cooling capacity and running gear etc. Having said that I've towed 1700+lbs many times with the CVT the prior car was the 2.5 Legacy GT non turbo with the 5spd MT which was great but lacked cooling ability for the long climbs in hot temps with anything beyond about 1000lbs.

The new Gen4 cooling system is far far better and the CVT is proving to be pretty dang nice for the tow effort given for the climbs you really don't have any flat spots like you get with the fixed gear autos or even the manual you just pick the speed that works best for the climb and temps etc and just plug along.

The really big deal is the outside temps! I'm in Ca and there are a few places we go in the summer where it is common to see 110 degree temps and very steep climbs. Which case my summer time camping rig set up was 1300lbs or less empty trailer weight which case the trailer I ended up with is 900lbs empty. The CVT hardly notices it. I've hauled the same trailer over the I5 Grapevine with about 700lbs in it +900 and the CVT and 2.5 easily did the run with no issues however it was in the 60's temp wise not a hot trip. Regarding the climb out of LA 3200rpm had us running between 63mph and 50mph the whole crossing which is very respectable given we had plenty of extra juice to pick up the pace when needed.

It's no f250!!! But those of us who have towed with the big pickups are smart enough to know this. My boat runs 1700lbs empty weight with trailer behind the car and we have hauled it packed with camping gear and three adults one child +dog up past Auburn Ca up I80 which has some fair climbs in 80 degree temps and the OB and CVT handled it beautifully we even got a trip average of 23mpg on that trip. My old 5spd 2.5 could only do that trip with me solo and the boat empty cooling was just not there to keep things cool. The 2010 with CVT never showed any sign of getting even warm with a much larger load. The steepest climb is a short one about a 6% up to the lake and the 2.5 with CVT held the 45mph speed limit easily could have gone faster. The old 5spd 2.5 had plenty of power for that climb also but cooling was the limiting factor always was with the old car.


My only caution would be high drag trailers tall box trailers - hot temps and long climbs when your 1500lbs and up.

The owners manual has a cooling system note and limitation listed

CVT is 1350lbs for 104+temps and 5+ mile climbs
The 5spd AT is 1500lbs same conditions
The MT 6spd lists your limit of 2700lbs but I can promise you 2700lbs 104+ temps and 5+mile hard climb you'll run out of cooling capacity before you run out of power.

The longer wheel base on the Legacy and OB make for some really nice towing and handling with the trailer by the way. One of the reasons I almost always haul the trailer with the Subaru over even our Sequoia the subaru just does it well with better mileage and is a nicer drive.

Short hauls 2000lbs is doable in mild temps. I found my 1700lb boat to be about where the limit is for the longer road trips go much heavier than 1700lbs and you do find your self wanting a bigger vehicle for those really windy sections of the trip or when the temps get hot and you have a climb ahead of you etc. But keeping it under 1700lbs seems to really be the ideal towing weight range for any of the subarus.
 
#12 ·
Another thing I don't think the larger engine choices regarding power will change the towing performance that much given your still faced with the cooling limitations and the cooling for the larger output engines doesn't really change that much.

The OB does have a larger rating due to its longer wheel base than the Forester. The new Forester will be in the 1500lb rating range from what I've read. I think the main reason is that it will sit on a platform it shares with the Impreza which is also rated at 1500lbs.

The Legacy / Outback platform is the larger heavier built platform in the Subaru line up hence the larger tow rating.
 
#13 ·
The biggest concern I would have in getting the CVT is the inability to service any part of the transmission. Meaning when something breaks, the entire transmission must be replaced, doesn't matter what part. That's $8,000.00 plus labor. The manual or 5 speed can be fixed when something breaks. Are you comfortable with a design like that?
 
#17 ·
Looks like I will be a little different.

I hated the CVT.

It wound the p!ss out of the motor every time you needed to accelerate or pass, and you had to wait for it to wind up before any forward acceleration happened.

It refused to use the torque band in the middle of the rev range. It was either eco-poking at 1200-2500 RPM, or would soar to 5000+. I could not, with any throttle position, get it to use the 3500-4500 RPM band. The motor had plenty of grunt there, but instead it would wind out to near redline. I hated that.

I do not recommend it for towing, anything, period. It is only just barely rated for the 170HP and 170ft-lbs the 2.5 puts out. It's not stout enough for the 250HP 6, or the torque of the diesel. That means if you tow with it, you will be running close to its design limits. Any transmission you load up close to design limits will burn out faster.

With the 3.6R+5EAT, I'd be comfortable towing up to 1000 lbs. After that, I do not believe the suspension or brakes are up to the job. That's what the 2500HD Silverado is for, with 765 ft-lbs of torque, an Allison 1000 commercial transmission, engine/turbo grade braking, and MASSIVE friction brakes. Use the right tool for the job.

Anyway...

I hated the CVT, I was ecstatic to be rid of it when we drove home in the '13 3.6R Limited. The 5EAT is more responsive. It is crisp without being obtrusive. It is vastly superior to the CVT.

That's my $0.02.
 
#18 ·
Looks like I will be a little different.

It wound the p!ss out of the motor every time you needed to accelerate or pass, and you had to wait for it to wind up before any forward acceleration happened.

It refused to use the torque band in the middle of the rev range. It was either eco-poking at 1200-2500 RPM, or would soar to 5000+. I could not, with any throttle position, get it to use the 3500-4500 RPM band. The motor had plenty of grunt there, but instead it would wind out to near redline. I hated that.
Not sure what year your car was but my 2013 definitely does not do that.. it is more willing to use the 3000-4500rpm band then it is to use 5000+ and it's pretty responsive in terms of the more throttle you give it the higher in the powerband it will go... it is definitely not totally linear though, at low pedal pressure it definitely requires more pedal travel and then gets more sensitive at higher pedal pressure.

But I wouldn't necessarily want linear in this car.. I just got out of a car that was super linear and it sucked in traffic. Awesome for sporty driving, very fatiguing for driving in traffic.
 
#22 ·
The towing capacity isn't higher its just not impacted by cooling limitations of the Automatic. Which means the cooling limitation is how cool it keeps the engine. 11yrs towing with the 5spd MT its really not that much different regarding ability in the cooling dept.

The CVT isn't new for 13 it was new in late 2009 when the first new generation 2010's were launched. The 2013 CVT is just updated and tweaked CVT that Subaru has had for a while now.

Engine braking between the CVT and the MT is pretty much the same works the same only no Clutch needed to be pressed with the CVT to down shift and hold a gear. CVT works great down hill. Highway 120 from Yosemite is a 3rd and 4th gear headed west run all the way to the Central Valley. Part of the reason we posted 33mpg for our trip was simply coasting down that hill every day for 4 days in 3rd and 4th.
 
#26 ·
Thanks for all the information and personal experiences. Based on the positive comments regarding the CVT, I feel more confident going with that choice for the new Subie. I will be retiring a 2006 Prius, so one of my concerns was if it was going to feel like another rubber band power train whereby the wheels had no direct connection to the engine. From what member rktheac commented, it won't be like that. One thing about the Prius that drives me nuts is the acceleration delay when you hit the throttle: start counting, 1, 2, about 3 the power finally comes on so you can make your lane change. It's nearly got me clobbered a few times. Sounds like the CVT is much more responsive.

As far as trailer hauling the new vehicle will only be towing my utility trailer locally, picking up a dozen bales of hay or taking the quad in for service. We do have hot summer weather, but I won't be towing on any hills, so it sounds like the Outback would handle it fine.

One final question, does the 2.5 seem underpowered for a highway passing situation, to the point where I would want the 3.6 engine? I hate to give up the fuel mileage with the bigger engine, but the Prius has probably warped me, I'm used to the leisurely throttle response and tired hamsters in the exercise wheel which apparently power the thing. Maybe the 2.5 will feel spunky compared to this? Probably I will want to test drive each.

Thanks for all the comments

Infidel
 
#29 ·
There is a misconception about engine braking with automatic transmissions. Before I purchased my 2012 3.6R Outback I rented a 2012 2.5 CVT Outback. I was impressed with the operation of the CVT going through mountains in Oregon and the power the 2.5 had. The paddle shifter worked much like shifting a manual transmission as far as engine braking. I drove the 2.5 about 1000 miles. I purchased the 3.6R mainly for the heavier duty transmission as I tow a 2200 lb trailer. I made the assumption if they do not put the CVT behind the 3.6 because it probably can not handle the extra torque. If that is the case then I was not sure the CVT would be able to handle the extra load from a 2200 lb trailer. Not sure if my assumption is corect but that is the reason I went with the 3.6R
 
#30 ·
More power is always going to offer a better experience when it comes to towing. However lots of other things are in play when you tow the primary things being wheel base / vehicle stability, cooling capacity which is almost always the limiting factor regardless of engine option chosen especially with the subarus.

The CVT is what it is more or less the future of passenger car transmissions and as long as it operates correctly from the start and is used correctly they should offer reliable service.

Even the 3.6 has a cooling limit of 1500lbs max trailer weight when you hit 104+ temps and 5+ mile climbs. Even with the 2.5 power is really not the issue its cooling capacity.
 
#35 ·
How Good is the CVT Transmission??

Very, very good. I have to repeat that again now after a year of driving. Through winter of northern Finland, lot´s of hauling etc. I would not trade this to conventional auto or MT, no way. Now 68+k miles and still works as new. I just test drove the new Forester w/ cvt recently. I heard exactly similar cvt sound (slight whine on certain conditions) as I hear on my OB.

It´s prefect on slippery conditions, ice & snow etc. And it´s so smooth & relaxing to drive. Hard to better that. Though I´d love to test how it works with diesel and on Forester Turbo. Subaru says that if you press the pedal more than 60% it works as any conventional auto, by switching pre-selected "gears".
 
#37 ·
Transmission does not make power. :rolleyes: None of us who dislike the CVT have stated or implied this.

The H6 makes a lot more power than the 4-banger. 250+ vs 170ish. That's where the power comes from.

It is my opinion that the 5EAT is far more *responsive* than the CVT. They're both slushboxes, but the 5EAT is much less so. The CVT reminded me of driving a completely toasted Chrysler automatic, slipping and sliding all over the rev range. The 6MT would be the best option for me, but I can't get that with Limited trim, or a 3.6 mill. The 5EAT is based on the same Jatco transmission used in performance sedans like the G35 or the 350Z (it just has a front diff and axle outputs). It's no stickshift, but it's pretty responsive and crisp-shifting for a slushbox. If I really want to, I can go to IPT transmission and build it up with performance valving and clutch packs to make it even better. There is exactly zero performance potential with the CVT.

I give up. Subaru owners/operators deserve their reputation as utter non-enthusiasts, the eco-wacko slowpokes puttering along at absurdly slow speeds and holding up traffic. I have no idea why I bothered chiming in here. Some guy wanted to know whether the CVT was any good... bunch of fanbois get on here and all claim it's the greatest thing since buttered toast. It isn't. If you want to be an operator of the most boring, sluggish, fuel-economy oriented appliance, sure, get a 2.5 coupled to a CVT. Might as well give up any semblance of driving dynamics and get a Prius. If you are a *driver* who wants anything resembling responsiveness, avoid it like the plague. Some people are happy herding an appliance from point A to B. Then there are those of us who want to enjoy the *drive*.
 
#42 ·
definitely subscribed to this thread! the hate on hear is pretty entertaining. the CVT is by far the best slushbox, I've ever driven. so smooth. I enjoy driving my car, but if I really wanted to focus on only how well a car drives, it'd be a racecar and never ever be registered for road use.
 
#44 ·
Thanks for the clarification duc. Good grief though...a built 5eat? Surely there are better yuppie subie options to spend your money on.

As far as the op, I have 76k on my cvt and I have performed my own maint on it. I posted a thread in the diy section if anyone is interested. It has been trouble free and gets me from point a to b in an efficient manner. I feel you must throw out what you have learned with traditional autos and learn how to drive the cvt. Yes, it may seem sluggish at first, but you need to be more deliberate in pedal pressure if you want to merge or accelerate quickly.

Honestly, I like to use this forum as a technical resource and some of the information is useful, but the whining on this forum makes almost not worth it to check in.
 
#45 ·
The whining here is just like any forum for basically trouble free cars. Nothing else to talk about but what color cargo mats to get , best soap, nav or no nav?

And whining. Gotta say something.
 
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