Built from official NHTSA complaint and recall data · data through 07/14/2026
High complaint levelIts most-reported problem — Suspension — runs 4.2× the fleet median for that category across the 965 model-years tracked on this site.
202Complaints
1Recalls
22Crashes
2Fires
32Injured
0Deaths
Source: U.S. NHTSA complaint & recall data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
Is this problem acknowledged?
The most-reported problem — Suspension (26.2% of complaints) — is covered by 1 NHTSA recall campaign.
Suspension complaints here are 4.2× the median for that category across the 965 model-years tracked on this site.
1 of the 6 most-reported categories on this page are backed by a recall or open investigation; the other 5 rest on owner reports alone.
Complaint category
Reports
Official status
Reference
Suspension
53 · 26.2%
Recalled
Recall 09V124000
Air Bags
43 · 21.3%
No official action
—
Structure:body
22 · 10.9%
Investigation closed
EA08016 → recall 09V124000
Electrical System
14 · 6.9%
No official action
—
Structure
13 · 6.4%
Investigation closed
EA08016 → recall 09V124000
Steering
13 · 6.4%
No official action
—
Recalled = an NHTSA safety recall covers this category, so a free repair exists. Under investigation = NHTSA has an open probe but no recall yet. Investigation closed = NHTSA examined it and closed the probe — this is not a defect finding; where a closed probe led to a recall we name the campaign. Not available = recall or investigation data could not be confirmed for this vehicle — it is not a “no”. Categories are matched by NHTSA's top-level component. Check your VIN at nhtsa.gov/recalls.
Percentages are the share of the 202 complaints citing each component; one complaint can cite several components. “Unspecified / other” is NHTSA’s own catch-all category — we show it rather than hide it.
IF THAT HAPPENS, THE VEHICLE MAY LOSE DRIVE POWER TO THE WHEELS, AND THE FRONT WHEEL MAY MAKE CONTACT WITH THE FENDER OR WHEEL WELL, THEREBY INCREASING THE RISK OF A CRASH. Recall repairs are free at authorized dealers.
PARK-IT: NO · PARK-OUTSIDE: NO · OVER-THE-AIR FIX: NO
Park itPark outside Specimen badges — shown on a recall card only when NHTSA sets the flag. None of the campaigns above carries either flag. Always check your own vehicle by VIN at nhtsa.gov/recalls.
What owners report
“THE CONTACT OWNS A 2004 HYUNDAI SONATA. WHILE DRIVING 55 MPH, THE VEHICLE SHOOK. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THAT…”NHTSA complaint 10907097 — filed 09/16/2016 · SUSPENSION
“THE CONTACT OWNS A 2004 HYUNDAI SONATA. THE CONTACT STATED THAT WHILE DRIVING, THE STEERING WHEEL VEERED TO THE RIGHT INDEPENDENTLY. THE FAILURE RECURRED NUMEROUS…”NHTSA complaint 10852679 — filed 03/31/2016 · SUSPENSION
“THE CONTACT OWNS A 2004 HYUNDAI SONATA. THE CONTACT STATED THAT THE VEHICLE BECAME VERY DIFFICULT TO CONTROL WHILE DRIVING. THE VEHICLE WAS TAKEN TO…”NHTSA complaint 10701636 — filed 03/25/2015 · SUSPENSION
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Complaint trend by year filed
Frequently asked questions
What are the most common problems with the 2004 Hyundai Sonata?
Suspension issues are the most-reported category, cited in 53 of 202 NHTSA complaints (26.2%), followed by air bags (43), structure:body (22), electrical system (14). Complaints are unverified owner reports.
How many complaints does the 2004 Hyundai Sonata have?
202 complaints were on file with NHTSA as of 07/14/2026. Of those, 22 involved a crash, 2 involved a fire, and 32 reported injuries. No deaths were reported.
Does the 2004 Hyundai Sonata have any recalls?
Yes — 1 NHTSA safety recall campaign, including campaign 09V124000. Recall repairs are free at authorized dealers. Check your specific vehicle by VIN at nhtsa.gov/recalls.
Has NHTSA acted on the 2004 Hyundai Sonata's reported problems?
1 of the 6 most-reported complaint categories on this page is backed by an NHTSA safety recall or open investigation; the rest are unverified owner reports. A recall means a free repair is available at authorized dealers.
Is a complaint proof of a defect?
No. Complaints are reports submitted by consumers to NHTSA. NHTSA does not verify individual complaints, and a complaint is not proof that a defect exists.
About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/14/2026.
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