2018 Hyundai Sonata
This year had 30% to 100% more complaints than this model's typical year.
This verdict reflects complaint volume compared to this model's typical year. Recalls and safety issues below apply regardless of the verdict — always check them.
- Complaints
- 374
- Recalls
- 1
- Investigations
- 2
- Top problem
- Engine
Campaigns on file for 2018
Opened by NHTSA
57% of complaints
Complaints per year
2018: 374 complaints
View as data table
| Year | Complaints |
|---|---|
| 1986 | 0 |
| 1987 | 1 |
| 1988 | 0 |
| 1989 | 11 |
| 1990 | 16 |
| 1991 | 29 |
| 1992 | 22 |
| 1993 | 26 |
| 1994 | 3 |
| 1995 | 68 |
| 1996 | 23 |
| 1997 | 49 |
| 1998 | 49 |
| 1999 | 124 |
| 2000 | 276 |
| 2001 | 205 |
| 2002 | 319 |
| 2003 | 199 |
| 2004 | 202 |
| 2005 | 165 |
| 2006 | 1,047 |
| 2007 | 696 |
| 2008 | 425 |
| 2009 | 460 |
| 2010 | 345 |
| 2011 | 3,377 |
| 2012 | 1,557 |
| 2013 | 1,912 |
| 2014 | 746 |
| 2015 | 1,148 |
| 2016 | 726 |
| 2017 | 764 |
| 2018 | 374 |
| 2019 | 162 |
| 2020 | 178 |
| 2021 | 133 |
| 2022 | 93 |
| 2023 | 87 |
| 2024 | 46 |
| 2025 | 17 |
| 2026 | 3 |
Known problem areas
Percentages can add to more than 100% — a complaint can name more than one system.
Engine
57% · 212 reportsShow complaint excerpts
I recently had the 9C2 Emissions recall update performed on my car, and since the update my car drives like total garbage after a cold start.
NHTSA ODI report, 2026-08-16
The lower aluminum engine oil pan developed a structural hairline fracture ("micro-crack") directly along the factory casting ridge adjacent to the drain plug.
NHTSA ODI report, 2026-07-20
Electrical system
16% · 60 reportsMost commonly citing wiring and starter assembly.
Show complaint excerpts
Vehicle 1 operating normally in traffic on [XXX] in Westfield MA. Operator 1 notices alert on dashboard. As Operator 1 looks down briefly and returns eyes immediately to the road, she sees Vehicle 2 braking to slow or stop.
NHTSA ODI report, 2024-02-11
Also filed under Forward collision avoidance and service brakes
Power train
11% · 40 reportsFuel/propulsion system
8% · 31 reportsExterior lighting
6% · 22 reportsMost commonly citing headlights.
Safety timeline
1 recall · 2 investigations · oldest first
To check one car, enter its VIN on the NHTSA recall page. Check a VIN →
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▮
2018Complaint volume 374 complaints filed for this model year.
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I
2019-04-19Engineering analysisClosed 2024-09-19 Electrical overstress
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R
2021-12-04Latches/locks/linkages21V619000 Hyundai Motor America (Hyundai) is recalling certain 2017-2018 Sonata, 2016-2018 Sonata Hybrid, 2018-2020 Accent, and 2016-2017 Azera vehicles. The trunk latch may become damaged, preventing the opening of the trunk from the inside.
Remedy: Dealers will replace the trunk latch base, free of charge. Owner notification letters were mailed December 4, 2021. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 208.
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I
2022-09-12Defect petitionClosed 2023-12-12 Loss of Motive Power
Buy-smart checklist
2018 Hyundai Sonata — pre-purchase inspection
Inspect
- Engine: 212 reports on file for this year.
- Electrical system: 60 reports on file for this year.
- Power train: 40 reports on file for this year.
Verify these recalls were completed
- Recall 21V619000 · Latches/locks/linkages
Other years of this model
See all years ranked →FAQ
- Is the 2018 Hyundai Sonata reliable?
- Based on NHTSA complaint volume compared to this model's typical year, the 2018 Hyundai Sonata is rated "worse than typical".
- What are the most common problems with the 2018 Hyundai Sonata?
- The most-reported component is engine, accounting for 57% of complaints on file.
- How many recalls does the 2018 Hyundai Sonata have?
- 1 recall on file for this model year.
Data updated 2026-10-09 · Complaints are unverified owner reports filed with NHTSA, not independently verified defects. Methodology.