NHTSA ODI · 398,146 deduplicated matched complaint incidentsSnapshot through 2026-07-192010 Ford Fusion · complaint-signal index 9.9 / 102012 Ford Focus · complaint-signal index 9.9 / 102007 Toyota Camry · complaint-signal index 9.9 / 10Methodology · open and versionedPublished indexes show sample size and 95% interval
NHTSA ODI · 398,146 deduplicated matched complaint incidentsSnapshot through 2026-07-192010 Ford Fusion · complaint-signal index 9.9 / 102012 Ford Focus · complaint-signal index 9.9 / 102007 Toyota Camry · complaint-signal index 9.9 / 10Methodology · open and versionedPublished indexes show sample size and 95% interval
Federal complaint record · Hyundai Sonata · model year 1999
1999 Hyundai Sonata
Owners submitted 124 federal complaint reports about this model year, placing it at the 29th percentile for complaint intensity within its 1997 to 2001 midsize sedan cohort. The largest reported component group is structure. Sample sizes and limitations are shown below.
Structure · 20% · group n = 37Airbags · 17% · group n = 31Engine · 12% · group n = 23Suspension · 9% · group n = 17Electrical · 8% · group n = 15
124
Complaint records on file
98,723
Median mileage at the reported problem · 73 complaints reported mileage
20%
Of classified component reports name structure · group n = 37
29th
Complaint-intensity percentile in a cohort of 36 model years
Reports describe airbag warning or deployment concerns
Cluster 1 of 31999 Hyundai Sonata
Stalling or shutdown · 15 reports
Reports describe the vehicle stalling or shutting off while driving
Cluster 2 of 31999 Hyundai Sonata
Steering effort · 12 reports
Reports describe steering effort or control concerns
Cluster 3 of 31999 Hyundai Sonata
Cluster summaries paraphrase recurring symptoms reported to NHTSA. They are aggregate descriptions, not individual verbatim reports.
Records through 2026-07-19Published 2026-08-02 · Updated 2026-07-19
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NHTSA consumer complaint records can reveal recurring patterns across published model years. MotorCensus summarizes those records as one complaint-signal index, with a 95% interval and sample size, updated with each data snapshot.