1999 Hyundai Sonata GLS problems & reliability
46 owner complaints filed with NHTSA for the 1999 Hyundai Sonata GLS. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
2 complaints report injuries (2 injured, 7 deaths reported).
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Structure → | 35 | 76% |
| Suspension → | 11 | 24% |
| Air Bags | 6 | 13% |
| Engine and Engine Cooling | 5 | 11% |
| Power Train | 3 | 7% |
| Steering | 2 | 4% |
| Tires | 1 | 2% |
| Wheels | 1 | 2% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Among the 41 complaints that included a usable odometer reading, the median reported incident mileage was 110,000 miles (middle 50% between 89,500 and 131,000 miles).
Complaints by incident year
What owners report
“Tl* the contact owns a 1999 hyundai sonata gls. While making a left turn at a traffic light, the front passenger side suspension separated from the vehicle. The vehicle was towed to an independent mechanic. The vehicle was included in nhtsa action number: ea08016 (structure, suspension). The vehicle was not repaired…”
Suspension · filed Jul 21, 2015
“I own a 1999 hyundai sonata and was informed by my mechanic that the front sub frame on the passenger side is rusting through, presenting a severe safety risk to the driver and passengers. There is currently a manufacturer's recall showing for the 2001-2004 model from your investigation. Shouldn't the 1999 be included…”
Structure · filed Apr 3, 2013
“1999 hyundai sonat gls airbag warning light continues to come on after being worked on by hyundai dealer 10-15 times. Was worked on without issue while under warranty with no success. Once extended warrenty expired, the dealer then knew that the car needed a new wire harness for about $1000. The service manager then…”
Air Bags · filed Mar 27, 2011
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- FRONT SUB-FRAME CORROSION
Engineering Analysis EA08016 · opened Aug 21, 2008 · closed Apr 20, 2009 · led to recall 09V124000
- IMPROPER FRONTAL AIR BAG PERFORMANCE
Defect Petition DP03001 · opened Mar 26, 2003 · closed Aug 1, 2003
Technical service bulletins
23 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 1999 Hyundai Sonata GLS. The 10 most recent:
This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
23-EM-005H · Service Bulletin/Repair Instructions · issued Oct 13, 2023
Hyundai applies a Paint Protection Film (PPF) on new vehicles before delivery to dealerships. It provides a barrier between the paint and contaminants, such as rail dust, acid rain, and industrial fallout. In rare…
23-BD-007H · Service Bulletin/Repair Instructions · issued Apr 24, 2023
This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates the various causes of…
23-BD-002H · Service Bulletin/Repair Instructions · issued Jan 30, 2023
Follow the guidelines outlined in this bulletin to inspect and clean or replace certain components of the engine intake system accordingly during engine short block or sub-assembly replacement.
22-EM-010H · Service Bulletin/Repair Instructions · issued Jul 28, 2022
Effective June 2, 2008, Federal Motor Vehicle Safety Standard 110 (FMVSS 110) established a threshold for correcting load carrying capacity information indicated on tire placards when vehicle weight has been increased…
22-GI-006H · Service Bulletin/Repair Instructions · issued Jul 14, 2022
This bulletin provides the service procedure for engine connecting rod bearing clearance testing. Perform the procedure outlined in this bulletin to fulfill the Bearing Clearance Test inspection requirements to…
21-EM-004H · Service Bulletin/Repair Instructions · issued Mar 30, 2021
This bulletin provides best practice recommendations when performing brake service procedures.
21-BR-002H · Service Bulletin/Repair Instructions · issued Mar 23, 2021
This bulletin provides the inspection procedure and repair guidelines for certain vehicles listed below.
21-EM-003H · Service Bulletin/Repair Instructions · issued Mar 10, 2021
This bulletin describes the procedure to inspect and identify fluid which may appear around the brake caliper area.
20-BR-002H · Service Bulletin/Repair Instructions · issued Nov 30, 2020
This bulletin provides tire vibration service procedures, including how to optimize vehicle vibration performance. For all wheel/tire balance claims, the â Tire Balance Data Sheetâ must be fully completed including…
20-SS-004H · Service Bulletin/Repair Instructions · issued Nov 19, 2020
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
No NHTSA recall campaigns name the 1999 Hyundai Sonata GLS in our current data. Recalls may apply only to certain VIN ranges — always confirm with a VIN check.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 1999 Hyundai Sonata GLS?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Among complaints with usable mileage, the median reported incident mileage was 110,000 miles. This does not predict when a particular vehicle will develop a problem.