Model year guide

2018 Hyundai ioniq plug-in hybrid

Recalls, most-reported problems, crash-test ratings, fuel economy and what a 2018 Hyundai ioniq plug-in hybrid is worth — from official NHTSA and EPA data. 1 on record.

2018 Hyundai ioniq plug-in hybrid — representative photo
Representative photo · via Wikimedia Commons

2018 Hyundai ioniq plug-in hybrid at a glance

Safety recalls1
Owner complaints4
Combined52 mpg

Free: that car's specs and build sheet, model-year recall campaigns and a fair price.

2018 Hyundai ioniq plug-in hybrid recalls 1

Hybrid Propulsion System: Inverter NHTSA Campaign #22V459000 · 28/06/2022

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.

Fix: 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.…

Source: U.S. NHTSA. A campaign covers the model year; to see whether a particular car still needs the repair, check its VIN on NHTSA.gov or ask a franchised dealer.

2018 Hyundai ioniq plug-in hybrid common problems

The most-reported problem areas across all 4 owner complaints filed with NHTSA — and what to check before you buy.

Structure
Inspect for rust, fresh undercoating, mismatched paint, uneven panel gaps and any sign of prior collision or frame repair.
Visibility/wiper
Have a trusted mechanic inspect this system as part of a pre-purchase inspection.
Engine And Engine Cooling
Check coolant level and color, look for leaks, and confirm the engine reaches normal temperature without overheating.

2018 Hyundai ioniq plug-in hybrid MPG & running costs

Combined52 mpg
City53 mpg
Highway52 mpg
Est. annual fuel cost$1,300
EPA size classMidsize Cars
TransmissionAutomatic (AM6)
Electric range630 mi
Charge time (240V)2.3 hours
Engine start-stopYes
Passenger volume96 cu ft
Cargo volume23 cu ft
5-yr fuel cost vs average new car$7,500 less

Source: U.S. EPA / DOE fueleconomy.gov.

Estimated 5-year cost to own

A rough guide to what running a 2018 Hyundai ioniq plug-in hybrid costs over five years and 75,000 miles.

Fuel (5 yrs)$6,500
Fuel only$6,500
Per mile$0.09

How this is estimated: fuel is the U.S. EPA annual cost at 15,000 miles a year. There aren't enough comparable listings to estimate depreciation for this model, so it is left out. Not included: insurance, maintenance, repairs, taxes, registration and finance costs. Treat it as a comparison guide, not a quote.

2018 Hyundai ioniq plug-in hybrid trims & engines on record

Trims
Limited, Limited w/Ultimate (PHEV)
Engines
1.6L 4-cyl 104 hp

2018 Hyundai ioniq plug-in hybrid vehicles on record

2018 Hyundai ioniq plug-in hybrid 2018 Hyundai ioniq plug-in hybrid Limited, Limited w/Ultimate (PHEV)KMHC75LD1JU082931

Other Hyundai ioniq plug-in hybrid model years

2020 2019

2018 Hyundai ioniq plug-in hybrid — frequently asked questions

Does the 2018 Hyundai ioniq plug-in hybrid have any safety recalls?

NHTSA lists 1 recall campaign for the 2018 Hyundai ioniq plug-in hybrid. Whether an individual car still needs a recall repair depends on its VIN — check it on NHTSA.gov or ask a franchised dealer. Recall repairs are free.

What are the most common problems with the 2018 Hyundai ioniq plug-in hybrid?

Across all 4 owner complaints filed with NHTSA, the most-reported problem areas are structure, visibility/wiper, engine and engine cooling.

What gas mileage does the 2018 Hyundai ioniq plug-in hybrid get?

The 2018 Hyundai ioniq plug-in hybrid has a U.S. EPA estimate of 52 mpg combined (53 city / 52 highway).

Sources: NHTSA (recalls, complaints, crash tests), U.S. EPA (fuel economy). Vehicle data only — CarLogs never shows owner information.