2018 Hyundai Elantra - Maintenance & Specs
The 2018 Hyundai Elantra belongs to a Hyundai Elantra lineup that Know Your Ride tracks across 21 model years, from 1992 to 2026. Engine options on record include the 2.0L, 1.6L, 1.4L. It is configured as front-wheel drive with an automatic (s6). The 2018 sits mid-run, with both earlier (1992) and later (2026) Elantra model years also documented.
It takes 0W-20 full synthetic oil, 4.2 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 (79), unknown or other (29), air bags (8). A representative report reads: "The contact owns a 2018 Hyundai Elantra. The contact stated while the vehicle was parked, the contact stated that while entering the vehicle, the contact..."
EPA fuel economy is rated at 28 city / 37 highway MPG, 32 MPG combined. Estimated annual fuel cost is about $1,350.
Quick Specs
| Oil viscosity | 0W-20 |
| Oil type | Full Synthetic |
| Oil capacity (w/ filter) | 4.2 qt |
| OEM oil spec | API SP |
| Oil filter | Wix 51394 |
| EPA combined | 32 MPG |
| Tire size | 215/55R17 |
| Coolant | Long Life |
| NHTSA overall | 4 / 5 stars |
| Technical service bulletins | 98 |
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.