2021 Hyundai Elantra Other or unknown Problems
- Complaints
- 30about this part
- Share
- 23%of 132 total for the year
- Median mileage
- 1,314miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 30 complaints about the other or unknown of the 2021 Hyundai Elantra, 23% of the 132 complaints for this model year. Where a mileage was given, the median is 1,314 miles. 2 of these say a crash was involved, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Wireless phone projection while using apple iphone xr continuously drops while using maps feature. When it disconnects I have to push two buttons on screen. Ok and then the button to reconnect. Sometimes this happens as much as every 5 seconds. I have nearly crashed while trying to constantly reconnect. Especially when I am in an area I do not know. There is no option to connect carplay via usb wired connection. This issue feels like a safety issue. As it is very distracting while driving.”
NHTSA complaint #11395046, filed 2021-02, 2,123 miles“I have had to get the horn replaced on my ELANTRA six times the horn goes out and this can be a very big safety hazard as it has caused people to almost hit me because they didn’t see me and my horn wasn’t working to alert them this needs to be addressed as soon as possible as this could cause someone to lose their life in the wrong instance”
NHTSA complaint #11569887, filed 2024-02“Engine shots off while on the automatic stop and go idle . It is being doing it for a while but it is happening more often even with the auto idle off and it even happened at the freeway. It gives me a message to put it in park or neutral and turn the engine on manually. Making this a very dangerous situation because cars behind me don’t know that my engine suddenly shots off. Thanks”
NHTSA complaint #11678266, filed 2025-08“I bought my 2021 hyuandai elantra on September 7 2023 almost 2 months ago and the emergency braking system comes on pretty often while driving my vehicle on the road and freeway so the brakes will lock on me whenever the car is in drive which could cause a serious crash and probably cause damage over time to brake pads and other things this problem has occurred over 5 times within 2 months”
NHTSA complaint #11558126, filed 2023-12“While Driving the car suddenly turns off. It puts me at risk because if I am in a situation where there are other cars, I can be hit and undangering my life and others! This problem happened suddenly and the car restarted only to fail again,multiple times. Towed to dealer /Danbury Hyundai and they claim not to find problem. The car had a full tank of fresh gas. This happened without warning.”
NHTSA complaint #11447230, filed 2022-01Related service bulletins
- 11019672Jun 16, 2025Certain 2021 – 2025 model year Elantra, 2022 – 2025 model year Elantra N and 2021 – 2025 model year Elantra Hybrid vehicles may experience an inoperable horn. Hyundai is…
- 11018878May 17, 2025Certain Elantra (CN7) non-N-Line and N-Line, Elantra (CN7A), Elantra N (CN7 N), and Elantra Hybrid (CN7 HEV) vehicles may experience an inoperable horn. Hyundai is extending the…
- 11018877May 17, 2025Certain Hyundai Elantra (CN7) non N-Line and N-Line, Elantra (CN7A), Elantra (CN7 N), and Elantra Hybrid (CN7 HEV) vehicles may experience an inoperable horn. Hyundai is…
- 11018577May 8, 2025Certain Hyundai Elantra (CN7) non N-Line and N-Line, Elantra (CN7A), Elantra (CN7 N), and Elantra Hybrid (CN7 HEV) vehicles may experience an inoperable horn. Hyundai is…
- 11018576May 8, 2025Certain Elantra (CN7) non-N-Line and N-Line, Elantra (CN7A), Elantra N (CN7 N), and Elantra Hybrid (CN7 HEV) vehicles may experience an inoperable horn. Hyundai is extending the…
- 11015890Mar 19, 2025Certain Hyundai Elantra (CN7), Elantra (CN7A), and Elantra Hybrid (CN7 HEV) vehicles may experience an inoperable horn. Hyundai is extending the warranty coverage for the horn…
- 11015889Mar 19, 2025Certain Elantra (CN7), Elantra (CN7A), and Elantra Hybrid (CN7 HEV) vehicles may experience an inoperable horn. Hyundai is extending the warranty coverage for the horn…
- 11015479Mar 7, 2025Certain Elantra (CN7 and CN7A) vehicles may experience the following conditions: • Lack of airflow coming from the forward-facing center vents • Mode actuator not changing…
Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 5 | 23% |
| 2024 | 17 | 30% |
| 2023 | 23 | 23% |
| 2022 | 21 | 21% |
| 2021 | 30 | 23% |
| 2020 | 26 | 10% |
| 2019 | 25 | 10% |
| 2018 | 54 | 19% |
| 2017 | 131 | 17% |
| 2016 | 54 | 18% |
| 2015 | 48 | 18% |
| 2014 | 49 | 13% |
| 2013 | 127 | 10% |
| 2012 | 67 | 10% |
| 2011 | 35 | 8% |
| 2010 | 19 | 5% |
| 2009 | 11 | 4% |
| 2008 | 24 | 8% |
| 2007 | 16 | 6% |
| 2006 | 3 | 2% |
| 2005 | 5 | 4% |
| 2004 | 5 | 3% |
| 2003 | 7 | 3% |
| 2002 | 9 | 3% |
| 2001 | 6 | 2% |
| 2000 | 2 | 1% |
| 1999 | 2 | 2% |
| 1998 | 7 | 13% |
| 1997 | 8 | 7% |
| 1996 | 7 | 7% |
| 1995 | 1 | 1% |
| 1993 | 1 | 4% |
Other parts of the 2021 Hyundai Elantra
32 complaintsElectrical system
31 complaintsSeat belts
27 complaintsEngine
13 complaintsVehicle speed control
10 complaintsBrakes
8 complaintsTransmission and drivetrain
7 complaintsLane departure
6 complaintsVisibility (wipers, defrost, mirrors)
6 complaintsExterior lighting
5 complaintsSteering
5 complaintsBack-over prevention (rear camera)
3 complaints
← All problems reported for the 2021 Hyundai Elantra
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology