2018 Hyundai Sonata Electrical System Problems
The 2018 Hyundai Sonata has 78 electrical system complaints, 21% of its 373 total complaints for the year, with a median failure mileage of 12,000. NHTSA lists no related recall for this issue on the 2018 model year.
- Electrical System complaints
- 78
- 21% of 373
- Crashes reported
- 3
- Fires reported
- 4
- Injuries reported
- 2
- Median mileage
- 12,000 mi
- Related recalls
- 0
Typical electrical symptoms owners report
- Owners report engine sputtering and stalling at highway speed (around 60 MPH), with the check engine light coming on and the car restarting only after several minutes.
- Several owners describe smoke and fires starting in the engine compartment, in one case while the vehicle was parked and unoccupied.
- Multiple owners report condensation and fogging inside the LED headlight housings, sometimes present from the day of purchase.
- Owners describe distracting black shadow lines or notches projected in front of the car at night from the low-beam headlights, which dealers said were within specification.
- One owner reported low-beam headlights that failed to illuminate beyond a very short distance ahead of the vehicle.
When 2018 Hyundai Sonata electrical complaints were filed
First complaint Dec 31, 2017, latest Apr 20, 2026.
Electrical System recalls for the 2018 Hyundai Sonata
No safety recalls on record for this model year.
Electrical System complaints by Sonata model year
Raw complaint counts per model year; newer years have had less time to accumulate complaints.
Frequently asked questions
- How common are electrical system problems on the 2018 Hyundai Sonata?
- NHTSA lists 78 electrical system complaints for the 2018 Sonata, which is 21% of the 373 total complaints filed for that model year.
- Is there a recall for the 2018 Hyundai Sonata electrical system?
- No related recall is listed in NHTSA data for this issue on the 2018 Sonata.
- At what mileage do electrical problems typically show up on the 2018 Sonata?
- The median mileage at failure for electrical system complaints on the 2018 Sonata is 12,000 miles.
- Do electrical system complaints on the 2018 Sonata involve fires or crashes?
- Yes, NHTSA data for this component and year includes 4 fires, 3 crashes, and 2 injuries among the 78 complaints.
- How does the 2018 Sonata compare to other model years for electrical complaints?
- The 2018 Sonata's electrical complaints made up 21% of that year's total, similar to 2012 (21%) and 2020 (23%), but lower than 2024's 46% share.