The 2004 Hyundai Sonata has 202 owner-filed NHTSA complaints and 1 recall on record. The most-reported areas are suspension and structure. Owners most often flag catastrophic engine failure (theta ii engines, 2.0l, 2.4l): engines "grenade" or "blow" with little to no warning, often between 80,000-120,000 miles. requires complete replacement. frequency: very frequent for affected generations.
Source: NHTSA complaints and recalls filed for 2004 Hyundai Sonata vehicles (US, public record).
Across the 16 Sonata model years we track, complaint volume runs from 29 (1996) to 3,463 (2011). With 202 complaints, the 2004 Sonata sits belowthe model's median of 345.
These are raw NHTSA complaint totals, not adjusted for how many cars sold or how long each model year has been on the road. Older and higher-selling years accumulate more complaints.
suspension
Campaign 09V124000HYUNDAI IS RECALLING 188,282 MY 2001-2004 SONATA AND MY 2001-2004 XG300 AND XG350 VEHICLES ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MAINE, MARYLAND, MASS…
Sentiment is sharply divided by generation and powertrain, creating a high-risk, high-reward ownership profile. For models from approximately 2011-2019 equipped with the Theta II engine (particularly 2.0L and 2.4L variants), sentiment is…
Owner insights cover all generations of the Sonata. See the full Sonata owner picture and every model year.
Used Sonata listings typically run $22,884–$28,068 across 2013 to 2026 model years.
Compare every Sonata year side by side to see how 2004 ranks against the rest.