| Variant | Engine | Drivetrain | Transmission | City | Highway | Combined | EV Range | Est. Annual Fuel Cost |
| Ioniq Electric 100% Electric | Electric Motor | Front-Wheel Drive | Automatic (A1) | 150 MPGe | 122 MPGe | 136 MPGe | 124 mi | $550 / yr |
| Ioniq Blue Hybrid | 1.6L 4-Cyl | Front-Wheel Drive | Automatic (AM6) | 57 MPG | 59 MPG | 58 MPG | — | $1,050 / yr |
| Ioniq Hybrid | 1.6L 4-Cyl | Front-Wheel Drive | Automatic (AM6) | 55 MPG | 54 MPG | 55 MPG | — | $1,100 / yr |
| Ioniq Plug-in Hybrid Plug-in Hybrid | 1.6L 4-Cyl | Front-Wheel Drive | Automatic (AM6) | 123 MPGe (53 MPG) | 114 MPGe (52 MPG) | 119 MPGe (52 MPG) | 29 mi EV (630 mi total) | $1,200 / yr |
Data Boundary Note: EPA specifications are shown by certified vehicle configuration. NHTSA complaints and recall totals are recorded at the model-year level across all configurations.
Electric Range & Charging: The 2018 Hyundai Ioniq provides an official EPA-rated driving range of up to 124 miles on a single battery charge.
| Tested Drivetrain / Cab Variant | Overall Rating | Frontal Crash | Side Crash | Rollover Rating | Rollover Risk |
| Electric 5 HB FWD | Not Rated | Not Rated | Not Rated | Not Rated | — |
| Hybrid 5 HB FWD | Not Rated | Not Rated | Not Rated | Not Rated | — |
| Plug-In 5 HB FWD | Not Rated | Not Rated | Not Rated | Not Rated | — |
Active Driver Assistance Systems (NHTSA Recorded): Forward Collision Warning (FCW) is documented as Optional and Lane Departure Warning (LDW) is documented as Optional in official NHTSA records for tested 2018 Hyundai Ioniq models.
View complete 2018 Hyundai Ioniq crash test & safety breakdown →
Top Reported Problem Categories
Ranked by total consumer complaint submissions recorded by NHTSA
Data Attribution & Context: Complaints are self-reported by vehicle owners to NHTSA and represent unverified consumer submissions. Complaint volume does not equal a statistically controlled failure rate and is not adjusted for total vehicles sold or cumulative mileage driven.
View all 2018 Hyundai Ioniq problems & component breakdown (9 categories) →
Affected Component: HYBRID PROPULSION SYSTEM: INVERTER
Defect Summary: Hyundai Motor America (Hyundai) is recalling certain 2017-2018 Ioniq HEV and Ionic PHV vehicles previously recalled under recall number 18V-704. The Power Relay Assembly (PRA) located underneath the rear seat may overheat.
Free Manufacturer Remedy: Dealers will inspect and replace the main relay or PRA, as necessary, free of charge. Owner notification letters were mailed August 23, 2022. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 232. This recall replaces NHTSA recall number 18V-704. Vehicles already repaired under the previous recall will need to have the new remedy completed.
Affected Component: ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:MODULE:ONBOARD (OBCM)
Defect Summary: Hyundai Motor America (Hyundai) is recalling certain 2017-2019 Ioniq electric vehicles. An unstable electrical ground may cause the vehicle to enter a fail-safe mode with reduced acceleration and power. In certain conditions while in fail-safe mode, the vehicle may accelerate after the gas pedal is released.
Free Manufacturer Remedy: Dealers will update the EPCU (Electric Power Control Unit) software and repair the ground wiring, free of charge. Owner notification letters were mailed February 9, 2022. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 215.
Affected Component: HYBRID PROPULSION SYSTEM: INVERTER
Defect Summary: Hyundai Motor America (Hyundai) is recalling certain 2017-2018 Hyundai Ioniq Hybrid and 2018 Ioniq Plug-In Hybrid vehicles. The Main Relay within the Power Relay Assembly (PRA) may have inadequate connections between its contacts, causing increased electrical resistance.
Free Manufacturer Remedy: Hyundai will notify owners, and dealers will inspect the Power Relay Assembly (PRA) for damage. If no damage is found, the main relay will be replaced. If damage is found, the PRA will be replaced. These repairs will be performed free of charge. The recall began February 28, 2019. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 178.
View all 2018 Hyundai Ioniq recalls & campaign history (3 campaigns) →
