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#BS-2018-HYUION-45D5

2018 Hyundai Ioniq Plug In Hybrid

Based on reports from 3 owners and 1 recall for this exact model.

Complaints

Crashes

Fires

Recalls

TSBs

🟢

Preliminary Verdict

Proceed with Caution

Based on 3 complaints, 0 crashes, 0 fires, and 1 recalls. This is the worst model year for this vehicle.

See full verdict with buy/skip conditions

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Mechanic Inspection Checklist

!Check the Engine And Engine Cooling:exhaust System:emission Control:catalytic ConvertorHIGH

1 owners reported engine and engine cooling:exhaust system:emission control:catalytic convertor issues — failures commonly reported around 12K miles.

!Inspect the VisibilityMED

Look for symptoms of wear and premature failure

+ 3 more items in full checklistUnlock

30,000-Mile Cost Projection

Best Case

$X,XXX

Most Likely

$X,XXX

Worst Case

$X,XXX

Top cost driver: Engine And Engine Cooling:exhaust System:emission Control:catalytic Convertor (1 reports).

Includes fuel costs, common repairs, and recall riskUnlock

Also in your report

Owner Intelligence

AI-synthesized themes from real complaints

Buyer Lot Checklist

Questions, test drive checks, walk-away triggers

Negotiation Talking Points

Data-backed dollar deductions

Buy / Skip Verdict

Final recommendation with conditions

10 sections total in the full reportUnlock all

Where the complaints fall

Engine And Engine Cooling:exhaust System:emission Control:catalytic Convertor1 (33%)

Visibility1 (33%)

Structure1 (33%)

2018 Hyundai Ioniq Plug In Hybrid: Known Issues & Problem Areas

Engine And Engine Cooling:exhaust System:emission Control:catalytic Convertor Issues

Engine And Engine Cooling:exhaust System:emission Control:catalytic Convertor complaints account for 33% of all reports filed for the 2018 Hyundai Ioniq Plug In Hybrid, with 1 owners filing complaints with NHTSA. The median mileage at time of complaint is 12,000 miles, suggesting issues tend to surface around the 12K-mile mark.

Visibility Issues

Visibility complaints account for 33% of all reports filed for the 2018 Hyundai Ioniq Plug In Hybrid, with 1 owners filing complaints with NHTSA. Owners should pay attention to visibility-related symptoms during test drives and pre-purchase inspections.

Structure Issues

Structure complaints account for 33% of all reports filed for the 2018 Hyundai Ioniq Plug In Hybrid, with 1 owners filing complaints with NHTSA. Owners should pay attention to structure-related symptoms during test drives and pre-purchase inspections.

Data sourced from NHTSA owner complaints and community reports. The full report analyzes severity, repair costs, and failure patterns for each category.

Don't negotiate blind — know what this car costs to own

Repair costs • Negotiation scripts • Mechanic checklist • Buy/skip verdict

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Recall History (1 recall)

22V459000Aug 2022

HYBRID PROPULSION SYSTEM: INVERTER

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.

Recall severity analysis & seller scripts

The full report rates each recall's severity and gives you scripts for asking the seller about recall completion.

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This is the worst model year for the Hyundai Ioniq Plug In Hybrid according to owner complaint data. The biggest problem area is accessories - interior.

2018 Hyundai Ioniq Plug In Hybrid vs. Class Average (Midsize Cars)

This vehicle

Class avg

143

Below the class average — fewer complaints than typical midsize cars vehicles. A good sign.

Complaint counts correlate with sales volume — popular vehicles naturally generate more reports. The full report normalizes for this.

About this data

NHTSA Complaints

Federal database of owner-filed safety complaints. 3 records for this vehicle.

NHTSA Recalls

Manufacturer-issued safety recalls. 1 recall found for this vehicle.

Repair Cost Data

Real-world repair costs from owner reports and independent databases.

Other Hyundai Ioniq Plug In Hybrid Model Years

2022 2021 2020 2019 2018 2017

View all Hyundai Ioniq Plug In Hybrid years →

2018 Hyundai Ioniq Plug In Hybrid: Frequently Asked Questions

What is the most common problem with the 2018 Hyundai Ioniq Plug In Hybrid?

The most commonly reported issue with the 2018 Hyundai Ioniq Plug In Hybrid is related to the engine and engine cooling:exhaust system:emission control:catalytic convertor, with 1 complaints filed with NHTSA.

Is the 2018 Hyundai Ioniq Plug In Hybrid reliable?

The 2018 Hyundai Ioniq Plug In Hybrid has 3 complaints, 0 crash reports, and 0 fire reports filed with NHTSA. This is below the class average — a positive sign for reliability.

How much does it cost to fix 2018 Hyundai Ioniq Plug In Hybrid problems?

Repair costs vary by issue. The full BumperScan report includes detailed repair cost estimates (low/median/high) for every major issue, plus a 30,000-mile total cost of ownership projection.

Does the 2018 Hyundai Ioniq Plug In Hybrid have any recalls?

Yes, the 2018 Hyundai Ioniq Plug In Hybrid has 1 recall on record. The full report includes recall severity analysis and scripts for asking the seller about recall completion.

What mileage do Hyundai Ioniq Plug In Hybrid problems start?

Based on 1 complaints with mileage data, the median mileage at time of complaint is 12,000 miles. The highest concentration of reported issues occurs in the 0–30K mile range. The full report breaks down exactly which components fail at each mileage bracket.

What’s in the full report?

10 sections of AI analysis: severity-ranked issues, component scores (0-100), 30K-mile cost projection, failure timeline by mileage, recall details with seller scripts, owner sentiment analysis, mechanic checklist, buyer lot checklist, negotiation ammo with dollar figures, and a buy/skip verdict.

How is this different from free NHTSA data?

NHTSA gives you raw complaint text. BumperScan cross-references 2.1M+ complaints with community repair cost data, EPA fuel data, and recall records — then uses AI to synthesize it into actionable advice with dollar figures.

How is this different from Carfax?

Carfax is VIN-specific history ($45/report). BumperScan is model-level reliability intelligence — what problems this car is known for, what they cost, and whether you should buy it. Complementary, not competing.

What if the report isn’t useful?

100% money-back guarantee. If the report doesn’t help you make a more informed decision, we’ll refund you — no questions asked.