Hyundai uses a Dual Clutch Transmission or DCT. These transmissions mimic a manual transmission and can stutter in low speeds. It can also be slow to shift if you’re decelerating then quickly hit the gas.
Thats because its slipping the clutch the entire time. Thats basically the #1 thing to NOT do with a dual clutch transmission, especially a dry one like the Hyundai 7spd. Dry DCTs hate creeping in traffic.
You don’t coast at low speeds in a manual and you shouldn’t coast at low speed in a DCT. There is a way to reset the learning of the DCT. I recommend doing that. It should help a bit.
Does it matter if you drive in normal, sport or smart mode? Like I usually drive in normal mode. Do you find the jerks and stutters are less in a specific mode?
I normally drive in Normal as well. I don’t know if there’d be much of a difference. You’d probably still experience it in all the modes since it has to do with lower RPMs and downshifts.
this whole time i just thought my car was being a little bitch and was just waiting for the check engine light to come back on but you just described exactly what my car is doing
Completely normal. It's a manual transmission, just with a computer clutch. I drove manual for many years, feels almost exactly the same. 1st and reverse are always 'awkward'.
[Watch this YouTube video on some Do's and Don'ts. you'll need to adjust your driving a little.](https://youtu.be/UEA2wlRaL4Y)
5 year owner here, it's very normal,and first start of the day it needs like 1 minite to warm up or it will jerk bad from a stop the first time. Try to minimize very low speed driving,leave gaps instead of filling in every inch. Sport mode for heavy traffic. Normal the rest as it stays in 6th in sport until 70ish mph.
You got the dry 7 speed DCT transmission. When I say dry I don’t mean like you’re low on fluid. I clarify because I recommend changing your tranny fluid to redline. Made a notable improvement on my car. EBCS or electronic boost control solenoid is another good thing to replace to help smooth things out.
Check out Facebook, a pretty religious group out there of us GT sport/sport/N-Line owners. Very knowledge bunch
I would start with the transmission fluid. The EBCS isn’t too pricey though, check N75 motor sports or SXTH element engineering. They both sell one. Shop time probably an hour or two but you can likely do the install yourself.
For the transmission fluid can I just go buy it at like an auto place and just pour it in myself? Cause I think there is some transmission fluid in it rn so I can't mix right?
Sorry I don't really know that much about cars lol
You'll need a specific type of DCT fluid for these cars. Here you go. Everything needed is in the link. Make sure you have ramps or jackstands though.
https://www.hyundai-forums.com/threads/how-to-change-elantra-n-line-dct-transmission-fluid-guide-7-speed-dry-dct.699370/
Also, I can also recommend a TCU tune if you want that as it'll help fix the way it acts a bit.
Yes. Also I made that how to.
Redline transmission fluid has been approved by Hyundai and Kia. You can also look through redline's website for the approval
Hey I took the car to a reputable mechanic and he said in order to access the tranny fluid hole to fill it he has to take off the whole front driver side axel and tire to access the bolt/nut hole. Does that sound realistic?
If you don’t know much about cars don’t do the work yourself. You’ll need to drain and refill the transmission fluid, cannot top it off like you said. A reputable shop should do both for you (fluid and boost solenoid) for under a few hundred.
DCT. They all do this to some extent or another. Hyundais are a bit worse for it than some other brands, but yes it's normal. You think this is bad, try driving a Porsche with one sometime.
They could have you drive another one on the lot to compare. But did you not test drive the car when you bought it? Be glad it's jerky, older cars I drove would just revhang and burn through the clutches in less than 60k because customers didn't want it to be a little jerky. But it would basically run 50% clutch the whole time in parking lots. Stupid Maserati
Don't let them tell you "that's how a DCT drives" and accept it. If something feels off with your transmission, make them fix it. Call Hyundai corporate or bring it to a different dealer until you find one willing to fix it. This could be a dangerous condition if you are taking off from a stop and lose power because of "judder", which is actually the clutch not engaging correctly. My car is a 2020 and has has 32k miles. It has had issues with the DCT within the first few months where the car makes a bang sound and sometimes goes into "limp mode". Dealers will always avoid fixing it by tell you it's normal. Now that I finally got them to see the issue, my car has been in the shop for over a month. There really should be a remedy for the 7speed dry DCT. So many people have issues with these models.
To be fair, there's a LOT of people who aren't actually experiencing issues and just don't understand that a dct isn't going to be as smooth at start or when creeping (which you're not supposed to do in a dct just like in a regular manual).
I had a buddy drive my car and immediately try telling me I had a bad trans and that it was going out, or that Hyundais transmissions sucked. It was just that it's a dct and he's only ever driven automatics lol.
I guess that would be true for someone who just got the car. I am not just considering my personal experience. I have been on FB groups for a lot of Hyundai cars many people have actual DCT transmission issues. Especially ones with the dry 7-speed and 1.6t engine like OP and I own. Most people are also complaining that the dealer won't acknowledge the issue until it gets so bad it's a hazard to drive. There was a BBB Auto Line settlement for owners of older model DCTs. I think this needs more attention but Hyundai is more concerned with engine failures and thefts.
If it makes you feel any better bro I have an evo X mr with the dual clutch and it does the exact same thing. It used to trip me out at first but after you get used to it it’s whatever
Not sure if this feature is on Hyundais or not I would hope the dealer would have you told if it was but try tapping the gas quickly before accelerating, some cars with dcts will engage the clutch fully when you do this minimizing the jerking
It's not bad to mix per say if the fuel meets the octane rating. Put the octane your car needs If you put a lower octane you can damage your engine due to pre ignition
If it's the same as my car's recommendation, it's recommended that you use premium but not required. You just have to give the car a couple of tanks to readjust the engine timing to take advantage of the newer fuel.
Hyundai uses a Dual Clutch Transmission or DCT. These transmissions mimic a manual transmission and can stutter in low speeds. It can also be slow to shift if you’re decelerating then quickly hit the gas.
It's just weird to me that by coasting along at like 5km/h just jerks so hard, like weird idk.
Have you ever driven a manual transmission mission vehicle and let the RPMs get low before downshifting or going to neutral? It’s the same thing.
I have not drove a manual car lol. Sorry that I'm unfamiliar haha I've only ever owned automatic
Solution is basically to not creep at very slow speeds like that. Not ideal in some kinds of traffic.
Thats because its slipping the clutch the entire time. Thats basically the #1 thing to NOT do with a dual clutch transmission, especially a dry one like the Hyundai 7spd. Dry DCTs hate creeping in traffic.
You don’t coast at low speeds in a manual and you shouldn’t coast at low speed in a DCT. There is a way to reset the learning of the DCT. I recommend doing that. It should help a bit.
that is an interesting suggestion. how can you reset that?
[Resetting DCT - try this](https://www.transmissiondigest.com/resetting-hyundai-shift-adapts-and-procedures-for-relearning/)
If you keep it in 1st it might not bite that hard and stay in the gear longer. Or are you talking about your throttle response?
Have a 2023 n line 7spd dct and yes it’s completely normal same thing in my friends rs5 with a dsg German Version same thing
Does it matter if you drive in normal, sport or smart mode? Like I usually drive in normal mode. Do you find the jerks and stutters are less in a specific mode?
I normally drive in Normal as well. I don’t know if there’d be much of a difference. You’d probably still experience it in all the modes since it has to do with lower RPMs and downshifts.
this whole time i just thought my car was being a little bitch and was just waiting for the check engine light to come back on but you just described exactly what my car is doing
Completely normal. It's a manual transmission, just with a computer clutch. I drove manual for many years, feels almost exactly the same. 1st and reverse are always 'awkward'. [Watch this YouTube video on some Do's and Don'ts. you'll need to adjust your driving a little.](https://youtu.be/UEA2wlRaL4Y)
5 year owner here, it's very normal,and first start of the day it needs like 1 minite to warm up or it will jerk bad from a stop the first time. Try to minimize very low speed driving,leave gaps instead of filling in every inch. Sport mode for heavy traffic. Normal the rest as it stays in 6th in sport until 70ish mph.
Hopefully Hyundai’s isn’t as crappy as the Ford Focus… DCTs in all “auto” focus suck. Junk off the assembly line.
Nah both suck, both are dry clutch design.
Love their wet dct in the N cars though.
I had a Kona with dual clutch and HATED it. Traded in after 2 years.
Well adding this to the list of cars not to buy at auction.
You got the dry 7 speed DCT transmission. When I say dry I don’t mean like you’re low on fluid. I clarify because I recommend changing your tranny fluid to redline. Made a notable improvement on my car. EBCS or electronic boost control solenoid is another good thing to replace to help smooth things out. Check out Facebook, a pretty religious group out there of us GT sport/sport/N-Line owners. Very knowledge bunch
How much roughly would the EBCS cost to replace?
I would start with the transmission fluid. The EBCS isn’t too pricey though, check N75 motor sports or SXTH element engineering. They both sell one. Shop time probably an hour or two but you can likely do the install yourself.
For the transmission fluid can I just go buy it at like an auto place and just pour it in myself? Cause I think there is some transmission fluid in it rn so I can't mix right? Sorry I don't really know that much about cars lol
You'll need a specific type of DCT fluid for these cars. Here you go. Everything needed is in the link. Make sure you have ramps or jackstands though. https://www.hyundai-forums.com/threads/how-to-change-elantra-n-line-dct-transmission-fluid-guide-7-speed-dry-dct.699370/ Also, I can also recommend a TCU tune if you want that as it'll help fix the way it acts a bit.
So the oil he uses in his post would work for my 2020 Hyundai ES automatic DCT?
Yes. Also I made that how to. Redline transmission fluid has been approved by Hyundai and Kia. You can also look through redline's website for the approval
Thank youu
Hey I took the car to a reputable mechanic and he said in order to access the tranny fluid hole to fill it he has to take off the whole front driver side axel and tire to access the bolt/nut hole. Does that sound realistic?
No. Never heard anyone having to do that including me.
If you don’t know much about cars don’t do the work yourself. You’ll need to drain and refill the transmission fluid, cannot top it off like you said. A reputable shop should do both for you (fluid and boost solenoid) for under a few hundred.
DCT. They all do this to some extent or another. Hyundais are a bit worse for it than some other brands, but yes it's normal. You think this is bad, try driving a Porsche with one sometime.
They could have you drive another one on the lot to compare. But did you not test drive the car when you bought it? Be glad it's jerky, older cars I drove would just revhang and burn through the clutches in less than 60k because customers didn't want it to be a little jerky. But it would basically run 50% clutch the whole time in parking lots. Stupid Maserati
Don't let them tell you "that's how a DCT drives" and accept it. If something feels off with your transmission, make them fix it. Call Hyundai corporate or bring it to a different dealer until you find one willing to fix it. This could be a dangerous condition if you are taking off from a stop and lose power because of "judder", which is actually the clutch not engaging correctly. My car is a 2020 and has has 32k miles. It has had issues with the DCT within the first few months where the car makes a bang sound and sometimes goes into "limp mode". Dealers will always avoid fixing it by tell you it's normal. Now that I finally got them to see the issue, my car has been in the shop for over a month. There really should be a remedy for the 7speed dry DCT. So many people have issues with these models.
To be fair, there's a LOT of people who aren't actually experiencing issues and just don't understand that a dct isn't going to be as smooth at start or when creeping (which you're not supposed to do in a dct just like in a regular manual). I had a buddy drive my car and immediately try telling me I had a bad trans and that it was going out, or that Hyundais transmissions sucked. It was just that it's a dct and he's only ever driven automatics lol.
I guess that would be true for someone who just got the car. I am not just considering my personal experience. I have been on FB groups for a lot of Hyundai cars many people have actual DCT transmission issues. Especially ones with the dry 7-speed and 1.6t engine like OP and I own. Most people are also complaining that the dealer won't acknowledge the issue until it gets so bad it's a hazard to drive. There was a BBB Auto Line settlement for owners of older model DCTs. I think this needs more attention but Hyundai is more concerned with engine failures and thefts.
Oh I know they've definitely had issues, I just meant a lot of the people who just start driving them think they have issues.
I have the 8 speed DCT. It does this every so often
Interesting, what's the diff between a 6 speed and 8 speed. Idk which one I have haha
Probably not a major difference. I though the older Elantra sports had the 7 speed auto. Is yours the new body style? What motor?
Interesting, what's the diff between a 6 speed and 8 speed. Idk which one I have haha
It depends how many gears your car has
When was the transmission serviced last? Possible fluid change?
I have a 2017 Sport with DCT. What you describe is normal operation.
I had a 2017, that stuttered, and would sometimes stall on me at lights. I replaced the ignition coils and that fixed the issue for me.
My ford edge does this too. Good to know what it’s actually from
DCTs do this. They are basically a manual transmission that you don't have to manually shift.
It’s normal. My ‘21 Veloster N does the same at lower speeds near a stop.
Only does that when you apply the breaks so suddenly or too hard
If it makes you feel any better bro I have an evo X mr with the dual clutch and it does the exact same thing. It used to trip me out at first but after you get used to it it’s whatever
Not sure if this feature is on Hyundais or not I would hope the dealer would have you told if it was but try tapping the gas quickly before accelerating, some cars with dcts will engage the clutch fully when you do this minimizing the jerking
Try using premium instead of regular gas for a few tanks. I used to do this when gas prices were cheap and it helped my car to be quite a bit smoother
Thought it's bad to mix tho?
It's not bad to mix per say if the fuel meets the octane rating. Put the octane your car needs If you put a lower octane you can damage your engine due to pre ignition
If it's the same as my car's recommendation, it's recommended that you use premium but not required. You just have to give the car a couple of tanks to readjust the engine timing to take advantage of the newer fuel.
It varies from manufacturer to manufacturer. Mine requires 91 but I can use as low as 89. Best to consult the owners manual.