2021 Hyundai Ioniq Hybrid Engine Problems
- Complaints
- 1about this part
- Share
- 8%of 13 total for the year
- Median mileage
- 73,020miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine of the 2021 Hyundai Ioniq Hybrid, 8% of the 13 complaints for this model year. Where a mileage was given, the median is 73,020 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The contact owns a 2021 Hyundai Ioniq Hybrid. The contact stated that upon depressing the accelerator pedal, there was an abnormal ratting sound coming from the vehicle, and the vehicle failed to accelerate as needed. The contact stated that the check engine and oil warning lights were illuminated on the instrument panel. The vehicle was taken to a dealer where the vehicle was diagnosed with connecting rod bearing failure. The contact was then provided an estimate for an engine replacement. The manufacturer was also notified of the failure and the contact was provided a case number. …”
NHTSA complaint #11659724, filed 2025-05, 73,020 milesRelated service bulletins
- 11038458Oct 8, 2026Some vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin outlines the combustion chamber cleaning procedure…
- 11038456Oct 7, 2026Certain vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin provides the inspection and repair procedures…
- 10208862Feb 10, 2022Certain IONIQ Hybrid and Plug-in Hybrid (AE HEV/PHEV) vehicles may exhibit a condition with the BlueLink Remote Start feature unsuccessful when using the MyHyundai mobile app or…
Engine: other model years
Other parts of the 2021 Hyundai Ioniq Hybrid
7 complaintsBrakes
3 complaintsForward collision avoidance
3 complaintsOther or unknown
3 complaintsVehicle speed control
2 complaintsBack-over prevention (rear camera)
1 complaints
← All problems reported for the 2021 Hyundai Ioniq Hybrid
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology