[Butch_Coolidge]

Your 2016 has port injection. The newer models have direct injection.

I’m keeping my car, indefinitely. Sorry to hear about this situation. Sometimes so-called advancements aren’t as advertised.


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[Montana Actual]

My '18 just turned 41K. At 24K and 39K miles I used the CRC intake system cleaner for GDI engines and plan to do it every 10K miles going forward. I've noticed a noticeable difference in how the engine performed after the treatments. It's never had any performance issues but the CRC further peps it up and smooths it out even further. I've heard pros and cons (mainly "bang for the buck") on the Techron, have used it once but couldn't discern any effect on performance. But it certainly can't hurt to use it.

I've done this method on all my vehicles, but just out of curiosity, what is different about the GDI product vs just the usual stuff like seafoam that requires the same process? Because the GDI product specifically states it's safe for use in port fuel injection and carbureted engines. I know fuel does not wash over the intake valves in a GDI engine, but the process for cleaning the intake valves is the same through the throttle body (or behind the MAF). Maybe a higher concentration of solvents than ones not marketed for GDI engines? Actually, it says safe for ALL gasoline engines, including turboed and supercharged. It has to be the PEA content. Either way, I like the CDC better than seafoam and other products too. I am always skeptical of these marketing tactics, so without comparing all the contents... who knows... I do see a couple cans of that CDC GDI stuff in my future though. Looks much easier to use and better quality cans than seafoam or any other ones.

 

[Arthur]

I've done this method on all my vehicles, but just out of curiosity, what is different about the GDI product vs just the usual stuff like seafoam that requires the same process? Because the GDI product specifically states it's safe for use in port fuel injection and carbureted engines. I know fuel does not wash over the intake valves in a GDI engine, but the process for cleaning the intake valves is the same through the throttle body (or behind the MAF). Maybe a higher concentration of solvents than ones not marketed for GDI engines? Actually, it says safe for ALL gasoline engines, including turboed and supercharged. It has to be the PEA content. Either way, I like the CDC better than seafoam and other products too. I am always skeptical of these marketing tactics, so without comparing all the contents... who knows... I do see a couple cans of that CDC GDI stuff in my future though. Looks much easier to use and better quality cans than seafoam or any other ones.

Just make sure there's PEA content in it because that's what cleans the valves. Also, you could buy the Subaru cleaner - I bought some and had it shipped to Canada. You need to buy the tool to use the cleaner in the engine.

There are two kinds: Carbon clean & Top engine clean. I assume they clean the same way. Haven't tried it yet.

 

[kr_xv]

Part of the delay you mentioned is the response of the throttle plate motor to the accelerator pedal. That is controlled by the ECU. Slowing the throttle plate response is a way to improve gas mileage I think. I had an '18 and now have a '21. Putting the car in sport mode gets ride of much of that delay.

You are right, that is mainly cause by ECU programming. That exactly what I find, the car feels more responsive on below 3k rpm with regular fuel compared to using premium fuel. However, wide open throttle beyond 3k rpm, seems the car have better power with premium fuel.

 

[perniva]

I just purchased a 2021 crosstrek and I’ve noticed that on acceleration there seems to be a hesitation when I press the pedal. Has anybody else experienced this issue and if so was there a fix for it. Thanks

Crosstrek wont grab the gears if you floor it from a dead stop. You gotta let off the break and accelerate slightly before you floor it. I imagine this is what you are referring to. Otherwise, if you are driving on the highway and suddenly floor it to 100% acceleration, it will be responsive since the transmission would be fully engaged at the time you “step on it”.

 

[Pingber]

2.5L engine, CVT. It responds as well as any car that I have owned. It seems to always be in a useful gear. This is my first regular CVT (Camry Hybrid uses a different tech CVT) and I haven't figured out why people keep complaining about CVTs. (Much better than my 2019 Mazda 3 in this respect, with 6 speed traditional automatic.)

I completely agree. We’ve had five Subarus..the 21 Crosstrek and 21 Forester CVTs are very good. No hesitation, no vibration. In fact, a very “automatic” feel.

 

[cqaigy]

I had some work done on the CVT, solenoid replacement. I noticed a "better" shifting characteristics. I was curious, so i called them up asked what would cause that. Sorry for the terminology i'm about to use as i don't remember exactly what was said. They said they 'flashed it with a newer version of software, that adjusting the shifting points and stuff.' Whew, i exhausted my technical terminology.

 

[Andrew Humes]

I just purchased a 2021 crosstrek and I’ve noticed that on acceleration there seems to be a hesitation when I press the pedal. Has anybody else experienced this issue and if so was there a fix for it. Thanks

I, too, just bought a new ‘21 Crosstrek and have the same problem. Very frustrating! Guy from Service at dealer drove it and verified; said it was normal. It’s not “normal”, in fact, it’s dangerous. Some have written that it gets resolved with time, so I don’t know what to do.🤔😡

 

[kuroitakushii]

Put it in sports mode

 

[mholzer54]

I need to bring mine in to fix this. On Service Bulletin 09-77-21R, they talk about hesitation, etc. Now it is for the 6-speed manual, but it may be equally there for the CVT. It is annoying since it feels like you did not engage the clutch smoothly, and yet I do. (Been driving manual-transmissions for 52 years now.) So my model is a 2021 Crosstrek MT.

 

[Andrew Humes]

Put it in sports mode

Yeah, it seems to happen less in sports mode, so maybe “intelligent” mode is only good for highway speeds?🤔

 

[MA Subie]

I need to bring mine in to fix this. On Service Bulletin 09-77-21R, they talk about hesitation, etc. Now it is for the 6-speed manual, but it may be equally there for the CVT. It is annoying since it feels like you did not engage the clutch smoothly, and yet I do. (Been driving manual-transmissions for 52 years now.) So my model is a 2021 Crosstrek MT.

Hmmm. I thought this was just an issue with the CVT, but it looks like it can happen with an MT.

So far, so good with mine.

 

[rpjohnson42]

Hesitation/lack of power on acceleration is a known problem with 2017-2021 Impreza and 2018-2021 Crosstrek with manual transmissions. Subaru has issued a Technical Service Bulletin on 7/28/21. Subaru TSB 09-77-21 The problem is easily fixed by reprogramming the ECM. I had my 2019 Impreza fixed at the dealer (for free ) and the car drives perfectly now. This eliminates the hesitation issue - smooth up through the gears - and seems to cut down on rev-hang. If you pay attention to how your manual transmission car drives, you will see a huge difference after this simple fix. I wish I had known about this sooner!!

 

[Octal450]

Fwiw - just correcting misinfo, the 09-77-21 TSB ECM does NOT affect rev-hang, but it does fix the hesitation issue. The overrun tables are identical.

 

[bellafour]

I need help with this!! We have the acceleration issue on a 2021 crosstrek we bought new, and I can't get the service department to experience the issue in a test drive, since it's so hit or miss. Did anyone figure out what the problem is? It's making me crazy, like we need to trade the car.

 

[Octal450]

Do you have a MT?

Go to the dealer with the TSB and have the ECM updated. It will fix this.

 

[Flux Flow]

My 2017 Forester 78k miles Standard w/CVT does the same exact thing. I've asked dealership about it and they don't know without actually digging into it, but I can't afford it at the moment. Out of warranty.

I do need to go to the dealer and do that, I have been putting it off. It does feel like slippage. I suspected early on it was just learning but the more it does it the more concerned I get. Somedays it will never have an issue, and some it's every time I stop and go. It could just be me, but I think a test drive in another model would help, possibly. All I know is that would suck if it is slippage. I hope that if it was slippage they'd offer a loaner while it's being fixed. Sadly, I won't have time this next weekend or the weekend after. I need to call and make an appointment. I am a procrastinator...
But I have also switched to premium. The cost difference on this small of a tank is worth it to me. Where I live they do not offer 93, so it's 91 no ethanol. I also use lucas or seafoam or a cleaner every month or so. A little bit goes a long way, especially on a new vehicle. Just nice to finally have a vehicle with a nice warranty.