2018 Hyundai Sonata - Maintenance & Specs
The 2018 Hyundai Sonata belongs to a Hyundai Sonata lineup that Know Your Ride tracks across 25 model years, from 1989 to 2026. Engine options on record include the 2.4L, 2.0L, 1.6L. It is configured as front-wheel drive with an automatic (s6). The 2018 sits mid-run, with both earlier (1989) and later (2026) Sonata model years also documented.
It takes 0W-20 full synthetic oil, 4.8 qt with a new filter meeting API SP. Fluid specs on file include Long Life coolant, DOT 3 brake fluid, SP-IV transmission fluid. Know Your Ride lists 14 scheduled maintenance items for this vehicle, the earliest interval falling at 7,500 miles. Documented torque values include oil drain plug 26 ft-lb, lug nut 80 ft-lb, spark plug 18 ft-lb.
NHTSA complaints for this vehicle cluster around engine (113), unknown or other (32), electrical system,engine (15). A representative report reads: "Engine blown out malfunction took two dealer Hyundai Folsom Lake stated rings are bad sludge buildup in engine and stayed at Hyundai motor America denied..." There is 1 safety recall on record; one covers: Hyundai Motor America (Hyundai) is recalling certain 2017-2018 Sonata, 2016-2018 Sonata Hybrid, 2018-2020 Accent, and 2016-2017 Azera vehicles. The....
EPA fuel economy is rated at 25 city / 35 highway MPG, 28 MPG combined. Estimated annual fuel cost is about $1,550.
Quick Specs
| Oil viscosity | 0W-20 |
| Oil type | Full Synthetic |
| Oil capacity (w/ filter) | 4.8 qt |
| OEM oil spec | API SP |
| Oil filter | Wix 51394 |
| EPA combined | 28 MPG |
| Tire size | 215/55R17 |
| Coolant | Long Life |
| NHTSA overall | 5 / 5 stars |
| Open recalls on record | 1 |
| Technical service bulletins | 170 |
Common Trouble Codes
- P0300 - Random/Multiple Cylinder Misfire Detected
- P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
- P0171 - System too Lean (Bank 1)
- P0128 - Insufficient Coolant Temperature for Stable Operation
- P0442 - Evaporative Emission Control System Leak Detected (small leak)
- P0455 - Evaporative Emission Control System Leak Detected (gross leak)
- P0700 - Transmission Control System Malfunction
- P0301 - Cylinder 1 Misfire Detected
- U0100 - Lost Communication With ECM/PCM A
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Part of the free Know Your Ride vehicle maintenance reference. Figures are sourced from EPA, NHTSA and manufacturer data and are for general reference - always confirm with your owner's manual.