CarRecallWatchThe 2018 Hyundai Ioniq Plug-IN Hybrid has 1 safety recall on file with NHTSA.
Owners have filed 4 complaints with NHTSA.
The most-reported problem area is Engine And Engine Cooling (1 report).
2018 Hyundai Ioniq Plug-IN Hybrid recalls
Overheating Relay Under Rear Seat Can Cause Fire
A power relay assembly located under the rear seat may overheat, which increases the risk of a fire.
Most common 2018 Hyundai Ioniq Plug-IN Hybrid problems
Problem areas named in the 4 complaints owners filed with NHTSA.
| Problem area | Reports |
|---|---|
| Engine And Engine Cooling | 1 |
| Visibility/Wiper | 1 |
| Structure | 1 |
| Unknown Or Other | 1 |
What owners report
I am writing to dispute the denial of my paint defect warranty claim formally and to demand that Hyundai Motor America reconsider its decision. My 2018 Hyundai Ioniq (Silver, VIN: [XXX] ) is exhibiting significant paint bubbling â the identical defect that Hyundai has already acknowledged and accepted responsibility for in white-painted vehicles across multiple model years. Timeline of Events ⢠I first contacted Hyundai Customer Care by phone, and was directed to visit an authorized dealership. ⢠On May 8, 2025, I visited Tustin Hyundai, where Dealer Coordinator Alex Cervantes documented the paint bubbling by photographing the affected areas and submitted the claim to Hyundai Motor
The contact owns a 2018 Hyundai Ioniq Hybrid. The contact stated that upon inspection, it was discovered that both the passengerâs side front and rear carpets had become soaked with water and condensation from the operation of the air conditioning unit. The contact was also concerned that mold was present due to the failure. The local dealer was contacted and a service appointment was scheduled. The manufacturer was not yet notified. The failure mileage was 12,000.
Sunglass holder would randomly come down and block rear view mirror completely. Unable to see the back.
I have put around 31K miles in my car. Day before yesterday ( Nov-2 ) when I was driving back home from work, suddenly I heard a noise. I pulled over and stopped the car. when I got down and checked, I noticed exhaust system or something similar to that fell off and touching the road. I have seen similar issues posted in Hyundai Ioniq forums https://www.ioniqforum.com/threads/very-dissapointed.37027/ https://www.ioniqforum.com/threads/first-issue-exhaust-fell-off-at-21k-miles-2019-phev.35092/ I will attach few pictures that I took during this incident.
2018 Hyundai Ioniq Plug-IN Hybrid questions
Does the 2018 Hyundai Ioniq Plug-IN Hybrid have any recalls?
Yes. NHTSA lists 1 safety recall for the 2018 Hyundai Ioniq Plug-IN Hybrid: Overheating Relay Under Rear Seat Can Cause Fire. Recall repairs are normally free at an authorized dealer.
What are the most common problems with the 2018 Hyundai Ioniq Plug-IN Hybrid?
Based on 4 owner complaints filed with NHTSA, the most-reported problem areas are Engine And Engine Cooling (1), Visibility/Wiper (1), Structure (1).
How do I check if a recall on my 2018 Hyundai Ioniq Plug-IN Hybrid has been fixed?
Enter your 17-character VIN in our VIN recall check. It shows open recalls that have not been repaired on your specific vehicle. Recall repairs are normally free at an authorized dealer.