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2018 Hyundai Sonata
Solid pick. The public record on this car is clean for its age — inspect it, then negotiate with confidence.
364 owner complaints · 1 recalls · data verified July 10, 2026 · source: NHTSA
Why buy?
Engine problems dominate (56% of complaints, typically reported near 15k miles).
The math, shown
Full methodology →Complaints filed per year
Fading = early teething worked out. Climbing = problems aging in.
The road ahead
What breaks on a 2018 Hyundai Sonata, plotted where owners report it happening.
Also reported (mileage varies): Lights (22) · Speed control (19)
Mileage medians come from owners who mentioned an odometer reading in their NHTSA complaint — a rough guide, not a schedule.
Engine
56%205 complaints · typically near 15k mi · 88 in the last 2 years
“Vehicle caught fire after repeatedly taking it to Hyundai for service . I complained about the oil consumption and knocking noises while the vehicle was still under wa…”
Electrical system
16%60 complaints · typically near 13k mi · 17 in the last 2 years
“The vehicle had safety and mechanical problems shortly after purchase, even with low mileage. The issues included warning lights, abnormal noises, repeated mechanical …”
Transmission & drivetrain
11%39 complaints · typically near 55k mi · 20 in the last 2 years
“The contact The contact stated that when taken the vehicle for a service campaign repair and shortly after went for recall r The vehicle does not run properly on cold …”
Fuel system
9%31 complaints · typically near 93k mi · 19 in the last 2 years
“Fuel line leak, car is parked, fire hazard, a mechanic has been there to inspect”
Recalls (1)
Safety recall repairs are free at the brand’s franchised dealers. Before buying, run the VIN at nhtsa.gov/recalls and make the seller show the work was done.
Latches/locks/linkages · 21V619000
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. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 401, "Internal Trunk Release."
Risk: A person inside the trunk compartment may become trapped, increasing their risk of injury.
Fix: 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.
Before you hand over money
Check the VIN for open recalls
NHTSA’s free lookup shows whether this exact car had its recall remedies completed.
Free NHTSA VIN check ↗Get a pre-purchase inspection
A $150–$250 independent inspection of this exact 2018 Hyundai SONATA beats every score on the internet, including ours.
What to ask forNot set on the 2018? See how every Sonata model year scores →
Cross-shopping? Compare the 2018 Hyundai Sonata against another car →
What owners say
Real owners of this exact model-year, shown separately from the NHTSA score — if they disagree, that’s worth knowing.