Federal complaint record · Hyundai Sonata · model year 2004

2004 Hyundai Sonata

Owners submitted 202 federal complaint reports about this model year, placing it at the 37th percentile for complaint intensity within its 2002 to 2006 midsize sedan cohort. The largest reported component group is suspension. Sample sizes and limitations are shown below.

Suspension · 19% · group n = 56Structure · 17% · group n = 48Airbags · 16% · group n = 46Electrical · 6% · group n = 17Brakes · 6% · group n = 16
202
Complaint records on file
85,500
Median mileage at the reported problem · 154 complaints reported mileage
19%
Of classified component reports name suspension · group n = 56
37th
Complaint-intensity percentile in a cohort of 45 model years

Suspension · 2 in ten classified complaints

Where this record concentrates

All failure files
Component group 01 · Suspension19%

Suspension reports

Hyundai Sonata · model year 2004

Reports in this group56
Share of classified reports19%
Component groups on file6
Open the failure files

Adjacent model years · same badge, different data

The complaint signal has a shape

Compare model years
2003
0.2complaints per 1,000 estimated vehicle-years
199 matched incidents
This car
2004
0.1complaints per 1,000 estimated vehicle-years
202 matched incidents
2005
0.1complaints per 1,000 estimated vehicle-years
165 matched incidents

The line compares submitted complaints per 1,000 estimated vehicle-years, not failures per 1,000 cars. Vehicle-years use compiled US sales, a 0.25 prior-calendar-year plus 0.75 current-calendar-year model-year allocation, and the shipped survival curve. Rates appear only where estimated vehicles in operation are at least 5,000.

From the record · recurring narrative clusters

What recurring complaint clusters describe

How clusters are built
Airbag concerns · 39 reports

Reports describe airbag warning or deployment concerns

Cluster 1 of 32004 Hyundai Sonata
Brake performance · 20 reports

Reports describe braking performance concerns

Cluster 2 of 32004 Hyundai Sonata
Steering effort · 10 reports

Reports describe steering effort or control concerns

Cluster 3 of 32004 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.

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