EZ Swap LLC services the Hyundai Ioniq in Phoenix, AZ, covering model years 2017 to 2022. If your Ioniq has a warning light, a strange noise or a safety recall question, our mechanics can diagnose it and give you a clear quote first.
To help Ioniq owners know what to watch for, we reviewed public records from the National Highway Traffic Safety Administration (NHTSA). For these model years NHTSA has 179 owner complaints on file for the Ioniq and 7 safety recall campaigns. The most-reported problem areas are electrical system (65), service brakes (38), vehicle speed control (24).
Most-Reported Hyundai Ioniq Problems
These problem areas come up most often in NHTSA owner complaints for the Ioniq (all model years combined). Complaint counts reflect reports filed, not the share of vehicles affected, so popular and older models naturally have more.
| Problem area (NHTSA component) | Complaints | Share | |
|---|---|---|---|
| Electrical System | 65 | 36% | |
| Service Brakes | 38 | 21% | |
| Vehicle Speed Control | 24 | 13% | |
| Engine | 23 | 12% | |
| Power Train | 22 | 12% | |
| Forward Collision Avoidance | 16 | 8% | |
| Fuel/Propulsion System | 13 | 7% | |
| Steering | 8 | 4% |
Electrical System
65 of the 179 complaints (36%) mention the electrical system. Electrical problems are made worse by desert heat, which ages batteries, cables and connectors. We test the battery, starter and charging system and trace faults to the actual part. See our battery replacement and starter & alternator repair pages.
Service Brakes
38 of the 179 complaints (21%) mention brakes. Brake complaints turn up on nearly every vehicle, and Phoenix stop-and-go traffic wears brake parts quickly. We measure pads and rotors, check calipers and fluid, and replace only what is worn. See our brake repair page.
Vehicle Speed Control
24 of the 179 complaints (13%) mention vehicle speed control (throttle and cruise control). Speed control complaints involve the throttle, cruise control and related sensors. We scan for stored codes and test the throttle system and sensors to find the actual cause instead of guessing. See our check engine light diagnostics and auto repair pages.
Hyundai Ioniq Complaints by Model Year
The Ioniq model years with the most NHTSA complaints on file are 2017, 2019, 2020. Older model years have had more time to collect reports, so use this table as a guide for what to inspect, not as a verdict on any one vehicle.
| Model year | Complaints on file | |
|---|---|---|
| 2017 | 51 | |
| 2018 | 17 | |
| 2019 | 33 | |
| 2020 | 31 | |
| 2021 | 20 | |
| 2022 | 27 |
Hyundai Ioniq Check Engine Codes
NHTSA owner complaints rarely cite specific trouble codes for the Ioniq, so we do not have a model-specific ranking to show. These are the check engine codes we see most often on vehicles in Phoenix heat, and any of them can show up on a Hyundai.
| Code | What it means |
|---|---|
| P0420 | Catalyst efficiency below threshold (bank 1) Often a worn catalytic converter, but failing oxygen sensors or exhaust leaks can set it too. Can cause an emissions test failure. |
| P0300 | Random or multiple cylinder misfire Worn spark plugs, failing ignition coils, fuel or vacuum problems. Do not ignore a flashing check engine light. |
| P0171 | System too lean (bank 1) Often a vacuum leak, dirty MAF sensor, weak fuel delivery or a failing oxygen sensor. |
| P0455 | EVAP system large leak Missing or loose gas cap, or a disconnected or cracked vapor hose. |
| P0128 | Coolant temperature below thermostat regulating temperature Usually a thermostat stuck open. Fix it to restore efficiency and cabin heat. |
| P0442 | EVAP system small leak Loose or worn gas cap, cracked hose or purge or vent valve. |
| P0301 | Cylinder 1 misfire Commonly a bad spark plug or ignition coil on that cylinder. |
| P0401 | EGR flow insufficient Clogged EGR passages or a stuck EGR valve. |
Got a check engine light on your Ioniq? A code is a clue, not a diagnosis, so we scan it and test the system before replacing anything. See our check engine light diagnostics.
Hyundai Ioniq Safety Recalls
NHTSA lists 7 recall campaigns for the Ioniq in these model years, most often involving hybrid propulsion system, electrical system, wheels. Recalls are repaired by the manufacturer at no charge to you, but each applies only to certain vehicles. Look up your VIN at nhtsa.gov/recalls.
- 2022 recall, Hybrid Propulsion System (campaign 22V459000): 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.
- 2021 recall, Electrical System (campaign 21V944000): 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.
- 2021 recall, Electrical System (campaign 21V127000): Hyundai Motor America (Hyundai) is recalling certain 2019-2020 Kona Electric and 2020 Ioniq Electric vehicles. The lithium-ion (Li-ion) battery may short-circuit.
- 2019 recall, Wheels (campaign 19V720000): Hyundai Motor America (Hyundai) is recalling certain 2019 Ioniq Hybrid and 2020 Elantra vehicles. The right-side rear wheel lug nuts may have been insufficiently tightened, allowing the wheel to detach from the vehicle.
- 2018 recall, Hybrid Propulsion System (campaign 18V704000): Hyundai Motor America (Hyundai) is recalling certain 2017-2018 Hyundai Ioniq Hybrid and 2018 Ioniq Plug-In Hybrid vehicles.
- 2018 recall, Hybrid Propulsion System (campaign 18V260000): Hyundai Motor America (Hyundai) is recalling certain 2017 Hyundai Ioniq Hybrid vehicles. The Hydraulic Clutch Actuator (HCA) inner oil seal may leak, allowing oil to accumulate in the cap area, possibly resulting in an electrical short.
Serious Incident Reports
Of the NHTSA complaints on file for the Ioniq, 24 involved a crash, 6 involved a fire, 16 reported injuries. These numbers are drawn from self-reported complaints and are not verified findings. If your vehicle has an open recall, get it repaired promptly.
Keeping a Hyundai Ioniq Reliable in Phoenix
Arizona heat is the hardest test a Hyundai will face. Batteries, belts, hoses, tires and engine oil all wear faster here, and a Ioniq that spends its life in stop-and-go Valley traffic needs maintenance earlier than the owner's manual's normal schedule suggests.
Our recommendation for Ioniq owners: follow the severe-service schedule, test the battery before every summer, inspect brakes and tires twice a year, and have any warning light diagnosed instead of ignored. If you are shopping for a used Hyundai Ioniq, a pre-purchase inspection shows what the paperwork does not.
Hyundai Ioniq Services at EZ Swap LLC
Get the details on our Phoenix Hyundai Ioniq repair service, or choose a service below.
Battery Replacement
Test, replace and protect against Phoenix heat.
Details →Starter & Alternator Repair
Charging and starting system repair.
Details →Brake Repair
Pads, rotors, calipers, fluid and brake lines.
Details →Check Engine Light Diagnostics
Scan, test and pinpoint the real cause.
Details →Auto Repair
All makes and models, from domestic trucks to imports.
Details →Oil Change & Maintenance
Oil, filters, fluids, tires and scheduled service.
Details →Hyundai Ioniq FAQ
What are the most common problems with the Hyundai Ioniq?
Based on NHTSA owner complaints, the most-reported problem areas for the Hyundai Ioniq are electrical system (65), service brakes (38), vehicle speed control (24). Complaint counts reflect reports filed, not the share of vehicles affected.
Which Ioniq model years have the most complaints?
The Ioniq model years with the most NHTSA complaints on file are 2017, 2019, 2020. Older years have had longer to collect reports, so inspect any specific vehicle before buying.
What check engine codes are common on the Hyundai Ioniq?
NHTSA complaints rarely cite specific codes for the Hyundai Ioniq. On Phoenix vehicles in general, we see P0420, P0300 misfires, P0171 lean conditions and EVAP leaks such as P0455 and P0442 most often. Bring yours in and we will scan and test it.
Does the Hyundai Ioniq have any safety recalls?
NHTSA lists 7 recall campaigns for the Hyundai Ioniq across model years 2017 to 2022. Each recall applies only to certain vehicles, so enter your VIN at nhtsa.gov/recalls to see if yours is affected.
Do you repair the Hyundai Ioniq in Phoenix?
Yes. EZ Swap LLC repairs and maintains Hyundai vehicles including the Ioniq, at 9050 N 9th St in Phoenix. Call or text (602) 246-9063 for an appointment.
Is a pre-purchase inspection worth it for a used Hyundai Ioniq?
Yes. An inspection checks the engine, transmission, brakes, suspension, A/C and electrical system, and scans for stored codes, so you know the real condition before you buy.
How often should I service my Hyundai Ioniq in Phoenix?
Follow the severe-service schedule in your owner's manual, since heat and stop-and-go driving count as severe use. Test the battery before summer and inspect brakes and tires regularly.
More Hyundai Models We Service
Source: public complaint and recall records from the National Highway Traffic Safety Administration (nhtsa.gov). Counts reflect reports filed and do not predict the condition of any individual vehicle.