MotorDeets

2018 Hyundai Ioniq Hybrid: Recalls, Problems & MPG

Here are the deets on the 2018 Hyundai Ioniq Hybrid: 2 recalls, 13 owner complaints.

2vehicle recalls
13owner complaints
2mention a crash
–best combined mpg
2018 Hyundai Ioniq Hybrid
Photo: Alawadhi3000 · CC BY-SA 4.0 · Wikimedia Commons. Representative photo of this generation; trim may differ.

Recalls

2 vehicle recalls from the manufacturer. Repairs are free. Check your VIN to see if one is still open on your car.

Hybrid system Vehicle recall #18V704000 · 2018 · 10,575 vehicles

What's wrong: The main relay within the power relay assembly (pra) May have inadequate connections between its contacts, causing increased electrical resistance.

Why it matters: The increased electrical resistance can overheat the rear seat which is above the pra, increasing the risk of a fire.

The fix: 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.

Hybrid system Vehicle recall #22V459000 · 2022 · 10,575 vehicles

What's wrong: The power relay assembly (pra) located underneath the rear seat May overheat.

Why it matters: An overheated pra increases the risk of a fire.

The fix: Dealers will inspect and replace the main relay or pra, as necessary, free of charge. Owner notification letters were mailed August 23, 2022.

Most-reported problems

Owner complaints filed with NHTSA, by component. One complaint can list several components. 0 mention a fire, 2 injuries and 0 deaths were reported.

Other / unknown3
Electrical3
Engine3
Transmission & drivetrain3
Speed control / throttle2
Brakes1
Steering1
Visibility/Wiper1

What owners describe

The 2018 Hyundai Ioniq Hybrid has 13 owner complaints, ranking #5 of 6 Ioniq Hybrid model years for complaints (about average; the typical year has 21). Complaints peaked in 2018 (4 filed that year). The typical problem showed up when the car was about 2 years old, at a median of 2,000 miles. Neighboring years: 2017 (42 complaints, 3 recalls), 2019 (16 complaints, 1 recalls).

Want the full repair deets? Get the factory manual.

Recall and complaint data tells you what goes wrong. A service manual tells you how to fix it: torque specs, wiring diagrams, fluid capacities and step-by-step procedures for the 2018 Hyundai Ioniq Hybrid.

eManualOnline Download (PDF), keep forever

Closest thing to the factory manual for most years. Pay once, keep it.

Most $25–$78, one-time
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Mitchell 1 DIY Online access, factory-level data

Pro-shop repair procedures, wiring diagrams and TSBs for your exact car.

From $19.99/mo · $39.99/yr
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ALLDATAdiy Online access, factory OEM info

OEM procedures, specs and recall/TSB info, the same source many shops use.

From $19.99/mo · $59.99/yr
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Haynes Print book or AllAccess online

Step-by-step photos written from a real teardown. Great for first-timers.

Books ~$30–$40 · AllAccess $34.99/mo
Check 2018 Hyundai Ioniq Hybrid manual

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FAQ

Does the 2018 Hyundai Ioniq Hybrid have any recalls?

Yes. NHTSA lists 2 vehicle recalls for the 2018 Hyundai Ioniq Hybrid. Recall repairs are free at any dealer, no matter how old the car is. Check your VIN at nhtsa.gov/recalls.

What are the most common 2018 Hyundai Ioniq Hybrid problems?

Owners have filed 13 complaints with NHTSA. The most-reported areas are other / unknown (3), electrical (3), engine (3).

Where can I get a 2018 Hyundai Ioniq Hybrid repair manual?

eManualOnline sells downloadable manuals, Mitchell 1 DIY and ALLDATAdiy sell online access to factory repair data, and Haynes sells printed guides and online access. Pick a download if you want to keep it, or a subscription for wiring diagrams and TSBs.

Other Ioniq Hybrid years

201720182019202020212022