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 · Kia Optima · model year 2001
2001 Kia Optima
Owners submitted 143 federal complaint reports about this model year, placing it at the 24th percentile for complaint intensity within its 1999 to 2003 midsize sedan cohort. The largest reported component group is structure. Sample sizes and limitations are shown below.
Structure · 16% · group n = 37Airbags · 13% · group n = 31Suspension · 13% · group n = 29Engine · 12% · group n = 27Electrical · 9% · group n = 20
143
Complaint records on file
81,500
Median mileage at the reported problem · 84 complaints reported mileage
16%
Of classified component reports name structure · group n = 37
24th
Complaint-intensity percentile in a cohort of 39 model years
Reports describe airbag warning or deployment concerns
Cluster 1 of 32001 Kia Optima
Brake performance · 16 reports
Reports describe braking performance concerns
Cluster 2 of 32001 Kia Optima
Transmission behavior · 13 reports
Reports describe harsh shifting, slipping, or shuddering
Cluster 3 of 32001 Kia Optima
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.