2018 Hyundai Ioniq Safety Report
2018 Hyundai Ioniq: Limited NHTSA data, but powertrain and electrical issues reported, no recalls.
AI Safety Analysis for the 2018 Hyundai Ioniq
Reliability Score
The 2018 Hyundai Ioniq receives a reliability score of 55 out of 100 based on analysis of NHTSA complaint data, recall history, crash reports, and safety ratings. This indicates average reliability — some notable concerns exist that prospective buyers should be aware of.
Known Issues for the 2018 Hyundai Ioniq
The following issues have been identified from NHTSA complaint data and owner reports for the 2018 Hyundai Ioniq:
| Issue | Severity | Frequency | Typical Mileage |
|---|---|---|---|
| Cvt/Dct Transmission Failure/Defect Vehicle slips violently from 1st to 2nd gear, loses acceleration, causes unpredictable hesitation, or prevents proper acceleration from a stop, manifesting as unresponsive/sluggish acceleration, jerking, or shuddering. One report mentions clutch and actuator replacement. |
High | Occasional | unknown miles |
| Engine Stalling And Smoke Engine stalled, engine light came on, advised to shut off engine, followed by smoke filling the cabin and outside the hood, indicating a potential fire risk. |
High | Rare | unknown miles |
| Electrical System Malfunctions LCD screen goes black, steering wheel locks, wipers/washer fluid activate randomly, car shifts from drive to sport mode by itself, A/C works intermittently, RKE failure, car gets stuck in park, backup camera fuzzy, Apple CarPlay drops out, tire pressure system issues. |
Medium | Occasional | unknown miles |
| Cruise Control Malfunction Vehicle accelerated and continued to accelerate uncontrollably when additional speed was requested with the increase control. |
High | Rare | unknown miles |
| Exhaust System Detachment Exhaust system or similar component fell off and was touching the road while driving. |
Medium | Rare | 31000 miles |
Common Problems Reported by Owners
Based on NHTSA complaint data, the following components account for the majority of reported issues with the 2018 Hyundai Ioniq:
Multiple complaints regarding transmission slipping, hesitation, and clutch failure, impacting acceleration and vehicle control.
Reports of engine stalling and smoke, indicating potential serious engine issues.
Issues with cruise control causing unintended acceleration.
A range of electrical malfunctions including screen blackouts, steering wheel locking, random wiper activation, A/C issues, and keyless entry failure.
Frequently Asked Questions About the 2018 Hyundai Ioniq
Is the 2018 Hyundai Ioniq safe?
Based on NHTSA data, the 2018 Hyundai Ioniq has a low number of complaints (16 total) and no official crash test ratings, making a definitive safety assessment difficult. However, reported issues include serious powertrain defects leading to loss of acceleration, engine stalling with smoke, and uncontrolled acceleration via cruise control, which are significant safety concerns. Two crashes and two injuries have been reported.
What are common problems with the 2018 Hyundai Ioniq?
The most reported issues are related to the POWER TRAIN (18.75% of complaints), specifically transmission slipping and hesitation. ELECTRICAL SYSTEM problems (18.75%) are also common, including screen blackouts and random system activations. ENGINE issues (12.5%), such as stalling and smoke, and VEHICLE SPEED CONTROL malfunctions (12.5%), like unintended acceleration, are also notable.
Are there any recalls for the 2018 Hyundai Ioniq?
No, according to NHTSA data, there are no recalls issued for the 2018 Hyundai Ioniq.
How does the 2018 Hyundai Ioniq perform in crash tests?
The 2018 Hyundai Ioniq has not received any official crash test ratings from NHTSA (Overall, Frontal, Side, Rollover are all N/A), so its crash test performance cannot be assessed based on this data.
What are the most severe safety concerns for the 2018 Hyundai Ioniq?
The most severe safety concerns include the reported CVT/DCT transmission defects causing violent slipping and loss of acceleration, the engine stalling with smoke, and the cruise control malfunction leading to unintended acceleration. These issues directly impact vehicle control and could lead to crashes or injuries.
Buyer Advice
Our recommendation: Given the lack of crash test data and several serious powertrain and electrical complaints, potential buyers should proceed with caution and consider a thorough pre-purchase inspection, especially of the transmission and electrical systems.
NHTSA Data Summary for 2018 Hyundai Ioniq
This safety report is based on a comprehensive analysis of data from the National Highway Traffic Safety Administration (NHTSA) for the 2018 Hyundai Ioniq. The data includes 16 consumer complaints filed by vehicle owners, 0 manufacturer-initiated safety recalls, 2 reported crashes, 2 reported injuries, and safety rating assessments associated with this vehicle.
All data presented in this report is sourced from public NHTSA databases. Our AI analysis identifies patterns across complaint narratives, correlates them with recall history, and produces the safety assessment above. This analysis is updated as new complaints and recalls are filed with the NHTSA.
Consumers are encouraged to report vehicle safety problems to the NHTSA at nhtsa.gov. If your vehicle is subject to a recall, contact your dealer to schedule the free repair.