1999 Hyundai Sonata Other or unknown Problems
- Complaints
- 5about this part
- Share
- 4%of 124 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the other or unknown of the 1999 Hyundai Sonata, 4% of the 124 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Noise like a helicopter is in the back seat,to dealer and wheel bearing are gone,parts unavaiable the second time(02/01) sec to backorder,same problem again 02/02)check engine light on sec to a cam sensor,sesor replaced, at 70mph lite come on and car stalls next is airbag light come on after seat is adjusted(driver) have never had to test them so can only hope that whe n car stalls they will deploy”
NHTSA complaint #759134, filed 2002-03“Engine check light came on. Consumer took vehicle to dealer, and they could not find the problem. A year later, engine check light came back on. This time there was a grinding noise when pressing gas. While on highway with foot on brake, vehicle started to accelerate. When changing from park to drive vehicle would rev really high like it wanted to take off. Please provide any further information.”
NHTSA complaint #895695, filed 2001-09“Alternator went out which made the electrical system to go out. Entire dashboard was not working, also, ABS brakes and engine check lights kept blinking. There was an electrical smell. Dealer replaced alternator.”
NHTSA complaint #865622, filed 2000-07“Engine check light remains illuminated, indicating a malfunction within the system. Dealer cannot determine the cause . Please give any further details.”
NHTSA complaint #8004695, filed 2002-02Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 3 | 18% |
| 2024 | 9 | 19% |
| 2023 | 7 | 8% |
| 2022 | 10 | 11% |
| 2021 | 32 | 24% |
| 2020 | 30 | 16% |
| 2019 | 23 | 14% |
| 2018 | 59 | 16% |
| 2017 | 103 | 13% |
| 2016 | 92 | 13% |
| 2015 | 169 | 15% |
| 2014 | 85 | 11% |
| 2013 | 181 | 9% |
| 2012 | 125 | 8% |
| 2011 | 217 | 6% |
| 2010 | 37 | 11% |
| 2009 | 48 | 10% |
| 2008 | 21 | 5% |
| 2007 | 22 | 3% |
| 2006 | 32 | 3% |
| 2005 | 6 | 4% |
| 2004 | 12 | 6% |
| 2003 | 6 | 3% |
| 2002 | 14 | 4% |
| 2001 | 4 | 2% |
| 2000 | 3 | 1% |
| 1999 | 5 | 4% |
| 1998 | 2 | 4% |
| 1997 | 2 | 4% |
| 1996 | 1 | 4% |
| 1993 | 2 | 8% |
| 1991 | 2 | 7% |
| 1989 | 1 | 9% |
Other parts of the 1999 Hyundai Sonata
36 complaintsAir bags
31 complaintsEngine cooling
23 complaintsSuspension
17 complaintsTransmission and drivetrain
14 complaintsElectrical system
11 complaintsBrakes
6 complaintsSeat belts
6 complaintsSteering
6 complaintsTires
6 complaintsVisibility (wipers, defrost, mirrors)
5 complaintsVehicle speed control
4 complaints
← All problems reported for the 1999 Hyundai Sonata
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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