2021 Toyota Corolla Other or unknown Problems
- Complaints
- 33about this part
- Share
- 18%of 188 total for the year
- Median mileage
- 645miles
- Trend
- RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
NHTSA recorded 33 complaints about the other or unknown of the 2021 Toyota Corolla, 18% of the 188 complaints for this model year. Where a mileage was given, the median is 645 miles. 2 of these say a crash was involved and 1 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“When I parked my car the morning on march 22, the temperature was around 50f. There was no windshield crack at this time. When I went to get my car in the afternoon on march 22, a foot long crack had formed on my windshield. The temperature at this time was around 70f. Had this happened while I drove, it would had been a safety hazard. A windshield should not crack this fast. A foot long on the first day? The car wasn't even moving when this happened. Imagine how fast the crack would crack if the car was moving. The car had less than 500 miles and was less than a month old when this occurred.”
NHTSA complaint #11405132, filed 2021-03, 490 miles“1.experienced sudden acceleration problem at a signal light 2.to control sudden acceleration, need to push brakes harder than a non hybrid car 3.in the reverse direction, it goes too fast without pushing the gas, this may cause a crash missing extra tire and the accessories (jack, lug wrench, other tools etc) even though there is a slotted place holder there. …”
NHTSA complaint #11396391, filed 2021-02, 800 miles“The Coolant Bypass Valve needs replacement and my car only has 94,000 miles on it I called Toyota to see if the part and labor were cover under their 100,000 miles/ 10 years warranty and they are saying that it is not,yet on Google and all over online forums it says that Toyotas corolla from 2019 to 2021 tend to eventually have this issue.”
NHTSA complaint #11760516, filed 2026-08“I was coming to a stop and the clutch slave master cylinder just sank to the floor and wouldn’t activate the clutch. There were no symptoms of the clutch failing or having trouble changing gears prior to its failure. It was inspected by the Toyota tech and he couldn’t give me a reason for its premature failure.”
NHTSA complaint #11669291, filed 2025-06“-coolant bypass valve -it risked my safety by possibly destroying my perfectly good car -yes my toyota dealership confirmed the faulty coolant bypass (which many people have had this exact issue with these toyota models) -no -yes about a week before it was serviced”
NHTSA complaint #11678370, filed 2025-08Related service bulletins
- 11028712Jan 7, 2026Some 2005 – 2026 Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. Follow the procedures in this bulletin to remediate…
- 10252259Feb 20, 2024TSB: Some 2018 ? 2022 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System require a Special Service Tool (SST) USB flash drive to update the…
- 10244111Aug 17, 2023TT: A very small percentage of customers experience operational difficulties with some telematics features which they cannot resolve on their own. These resources, in conjunction…
- 10220154May 13, 2022TT: To improve customer support of telematics connected services features, additional resources have been provided in the Service Lane - Knowledge Center.
- 10183283Oct 22, 2020TSB: During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce conditions such as pulling or drifting. If the wheels are replaced or…
- 10178527Jul 31, 2020TSB: During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce conditions such as pulling or drifting. If the wheels are replaced or…
Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 8 | 44% |
| 2025 | 7 | 23% |
| 2024 | 17 | 26% |
| 2023 | 18 | 24% |
| 2022 | 15 | 15% |
| 2021 | 33 | 18% |
| 2020 | 80 | 26% |
| 2019 | 32 | 16% |
| 2018 | 19 | 14% |
| 2017 | 31 | 17% |
| 2016 | 24 | 11% |
| 2015 | 33 | 15% |
| 2014 | 38 | 14% |
| 2013 | 16 | 8% |
| 2012 | 11 | 2% |
| 2011 | 19 | 3% |
| 2010 | 47 | 4% |
| 2009 | 40 | 3% |
| 2008 | 7 | 2% |
| 2007 | 22 | 3% |
| 2006 | 29 | 3% |
| 2005 | 25 | 3% |
| 2004 | 16 | 3% |
| 2003 | 15 | 2% |
| 2002 | 4 | 3% |
| 2001 | 6 | 5% |
| 2000 | 3 | 2% |
| 1999 | 6 | 4% |
| 1998 | 6 | 3% |
| 1997 | 4 | 3% |
| 1996 | 1 | 1% |
| 1995 | 1 | 1% |
| 1994 | 2 | 1% |
| 1993 | 1 | 1% |
| 1992 | 2 | 3% |
| 1991 | 1 | 1% |
| 1990 | 1 | 4% |
Other parts of the 2021 Toyota Corolla
53 complaintsEngine
41 complaintsElectrical system
23 complaintsTransmission and drivetrain
19 complaintsVisibility (wipers, defrost, mirrors)
15 complaintsBrakes
9 complaintsExterior lighting
8 complaintsForward collision avoidance
8 complaintsSeat belts
8 complaintsVehicle speed control
7 complaintsSteering
5 complaintsBody and structure
5 complaints
← All problems reported for the 2021 Toyota Corolla
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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