The Lemon IndexAll cars · Hyundai Sonata · 2018
2018 Hyundai Sonata. Advanced data.
The raw numbers: engines, recall campaign numbers, failure mileage and manufacturer communications.
Engines and drivetrains 5
| Engine | Transmission | Drive | City / hwy / combined | Fuel | Fuel cost/yr |
|---|---|---|---|---|---|
| 1.6L 4-cyl turbo | Auto (AM7) | FWD | 28 / 37 / 31 | Regular | $2,000 |
| 2.0L 4-cyl hybrid | Auto (AM6) | FWD | 39 / 44 / 41 | Regular | $1,500 |
| 2.0L 4-cyl plug-in hybrid | Auto (AM6) | FWD | 37 / 42 / 39 | Regular | $1,600 |
| 2.0L 4-cyl turbo | Auto (S8) | FWD | 23 / 32 / 26 | Regular | $2,400 |
| 2.4L 4-cyl | Auto (S6) | FWD | 25 / 35 / 28 | Regular | $2,200 |
EPA test versions for this model year. Fuel cost is the EPA's current estimate, not the price in that year.
Failure mileage by system
Half of owners who gave a mileage reported the problem between 5,400 and 58,000 miles. Median 20,000, from 145 complaints with a mileage.
| System | Median | Middle half | Complaints |
|---|---|---|---|
| Engine | 19,800 | 6,200–63,000 | 60 |
| Electrical | 20,500 | 11,000–70,000 | 27 |
| Transmission & drivetrain | 40,500 | 5,400–82,500 | 12 |
| Fuel or ev drive system | 128,000 | 4,800–165,000 | 5 |
| Lights | 300 | 100–8,000 | 16 |
Mileage owners typed into their NHTSA complaint, all complaints for this model year. People report some problems late, so read it as a range.
Complaints by system
| System | Share of complaints |
|---|---|
| Engine | 41% |
| Electrical | 20% |
| Lights | 17% |
| Speed control | 11% |
| Brakes | 7% |
One complaint can name more than one system, so shares can add to more than 100%.
Severity, all complaints
| Total | Crashes | Fires | Injuries | Deaths | Tows |
|---|---|---|---|---|---|
| 383 | 18 | 13 | 10 | 1 | 29 |
As reported by owners to NHTSA. Not verified.
Recall campaigns 1
21V619000 Aug 2021 Latches/Locks/Linkages / Trunk Lid / Latch
Defect. 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.
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.
NHTSA investigations
| Status | Subject | Opened | Closed |
|---|---|---|---|
| Closed | Loss of motive power | 2022 | 2023 |
| Closed | Electrical overstress | 2019 | 2024 |
Manufacturer communications 208
Hyundai filed 208 service communications for this car with NHTSA.
- Small oil leak from the electric oil pump (EOP) seals
- Before installing an automatic transmission, check the depth of the torque converter in the…
Crash ratings by version
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| Hyundai Sonata 4 DR FWD | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★☆ |
| Hyundai Sonata Hybrid 4 DR FWD | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★☆ |
Safety equipment
| Electronic stability | Forward collision warning | Lane departure warning |
|---|---|---|
| Standard | No | Optional |
YouTube repair topics
100 videos about the 2015–2019 Hyundai Sonata, 14.7M views.
| Topic | Videos | Views |
|---|---|---|
| Gauges, lights & wiring | 4 | 516K |
| Infotainment, battery & electrical | 4 | 364K |
| Windows, doors & mirrors | 2 | 360K |
| Intake, EGR & engine sensors | 2 | 186K |
| Spark plugs & ignition coils | 2 | 179K |
| Oil changes & service | 1 | 134K |
| Brakes & ABS | 1 | 125K |
| Cooling system | 1 | 77K |
Nearby model years
Sources: NHTSA complaints, recalls, investigations and manufacturer communications; EPA fuel economy data; YouTube video titles. Complaints are owner reports, not proof of a defect.
Updated
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