2020 Toyota Corolla
Common Problems
Ranked from 90 federal NHTSA complaints and 1 recalls. Every problem links to the complaint IDs behind it.
9 Common Problems
Ordered by how often owners reported each one to NHTSA. The bar shows how common a problem is relative to the most-reported on this vehicle. Expand any problem to see the federal complaint IDs.
- 1
Engine Coolant Bypass Valve Failure
55complaintsHigh severityEngineThe coolant bypass valve malfunctions, causing coolant leakage and triggering the 'Engine Maintenance Required' warning.
- 2
Engine Maintenance Required Warning
16complaintsMedium severityEngineThe 'Engine Maintenance Required' warning appears frequently, often due to issues with the coolant bypass valve or other engine components.
- 3
Engine Maintenance Light Malfunction
15complaintsMedium severityEngineThe 'Engine Maintenance Required' light appears without actual engine issues, requiring costly repairs.
- 4
Windshield Wiper Malfunction
9complaintsMedium severityElectricalWindshield wipers intermittently fail to function properly, affecting visibility during rain or snow.
- 5
Clutch Slave Cylinder Failure
4complaintsMedium severityTransmissionThe clutch slave cylinder fails, leading to clutch pedal sticking and difficulty shifting gears, posing a safety risk.
$200–$2,500est. drivetrain diagnosis + repair · 1–8 hrs laborGet local quotes - 6
Communication Module Failure
4complaintsMedium severityElectricalThe communication module fails, causing intermittent voice messages and system malfunctions, disrupting the driving experience.
- 7
Engine Stall at Idle
4complaintsMedium severityEngineThe engine unexpectedly stalls at idle, often due to stop-start system failure.
$150–$1,200est. stalling / shutdown diagnosis + repair · 1–5 hrs laborGet local quotes - 8
Air Bag System Malfunction
2complaintsMedium severityElectricalThe air bag system malfunctions, with notifications appearing and the potential for the passenger front seat weigh sensor issue, compromising safety.
- 9
Water Intrusion in Doors
2complaintsMedium severityOtherWater enters the rear doors during rain, causing corrosion and damage to electrical components.
Related recall: 19V877000
Other years & sources
Data source: U.S. National Highway Traffic Safety Administration (NHTSA) owner complaints and recalls. Problems are clustered and ranked from the complaint record; occurrence counts reflect corroborating complaints, not total incidence. Vehicle image is illustrative. Repair-cost figures are typical U.S. independent-shop ranges (parts + labor) for the class of repair shown — actual quotes vary by region, engine, and diagnosis; always confirm with a local shop.