Head-to-head reliability
Hyundai Ioniq 9 vs Honda Accord
How the Hyundai Ioniq 9 and Honda Accord compare on NHTSA complaints, recalls and crash reports — and which is the lower-risk used buy.
Based on NHTSA owner-complaint & recall records
Hyundai Ioniq 9 vs Honda Accord: The Ioniq 9 averages 37 complaints per year with 3 recalls, while the Accord averages 452 complaints per year with 38 recalls. The Ioniq 9 reports 0 crash-related complaints and 4 injuries; the Accord has 162 crash-related and 3 deaths. Source: NHTSA owner complaints.
The picture
Is the Hyundai Ioniq 9 or Honda Accord more reliable?
A plain-English read on what the NHTSA record says about living with each vehicle.
Hyundai Ioniq 9
The Hyundai Ioniq 9 is a new electric SUV with only one year of complaint data, averaging 37 complaints per year. Owners report issues with the electrical system, particularly the Integrated Charging Control Unit (ICCU), which can fail and cause warnings or loss of power. There are also complaints about unintended emergency braking and sudden loss of propulsion, which are serious safety concerns. With 3 recalls and 4 injuries reported, it's a vehicle that requires careful attention to electrical and propulsion systems.
Honda Accord
The Honda Accord is a long-running midsize sedan with 10 years of data and an average of 452 complaints per year. The most common issues involve the engine, electrical system, and forward collision avoidance, with reports of stalling, power steering and braking failures, and unintended braking. There are 38 recalls and 162 crash-related complaints, including 3 deaths, indicating a higher volume of safety-related problems over its history. Buyers should be aware of these patterns, especially in hybrid models.
The numbers
Side-by-side NHTSA record
Lower is better in every category. The highlighted cell is the stronger result.
| Category | Hyundai Ioniq 9 | Honda Accord |
|---|---|---|
| Total complaintsAll model years combined | 37 Better | 4,524 |
| Safety recallsFederal recall campaigns | 3 Better | 38 |
| Crash reportsCrash-related complaints | 0 Better | 162 |
| Complaints per yearAveraged across model years | 37.0 Better | 452.4 |
| Reported injuriesTied to owner complaints | 4 Better | 146 |
| Reported deathsTied to owner complaints | 0 Better | 3 |
Source: NHTSA owner complaints & recall records.
What actually goes wrong
The problems owners report
The most-complained-about systems on each vehicle — what fails, and what owners say in their own words.
Hyundai Ioniq 9
- 01ELECTRICAL SYSTEM20
- 02FUEL/PROPULSION SYSTEM9
- 03POWER TRAIN6
- 04FORWARD COLLISION AVOIDANCE5
- 05UNKNOWN OR OTHER4
Owners report Integrated Charging Control Unit (ICCU) failures, often within the first few thousand miles, leading to 'Check Electrical System' warnings and potential loss of power. This can leave you stranded and requires dealer repair.
Complaints describe sudden loss of propulsion and unintended emergency braking at highway speeds, which can be frightening and dangerous. These issues may be related to software or sensor faults.
Some owners experience ICCU failure affecting the power train, and others report assisted driving systems (like adaptive cruise control) suddenly deactivating. This reduces driver assistance and may indicate broader electronic faults.
Reports include the automatic emergency braking system failing to detect hazards or activating unexpectedly. This undermines a key safety feature and could lead to collisions or abrupt braking.
“My 2026 Hyundai Ioniq 9 (Performance Calligraphy AWD), leased new in late April 2026 from Team Hyundai of Bend, OR, suffered an Integrated Charging Control Unit (ICCU) failure at approximately 1500 miles in late June 2026, roughly two months into ownership. T…”
“On 8/3/26 my Ioniq 9 had a warning message to Check the Electrical System, but provided no additional information. I was able to drive the car home, anticipating that I be able to take it in to the Hyundai dealer where i purchased the vehicle. It should be no…”
Honda Accord
- 01ENGINE1,006
- 02ELECTRICAL SYSTEM895
- 03FORWARD COLLISION AVOIDANCE837
- 04UNKNOWN OR OTHER746
- 05FUEL/PROPULSION SYSTEM602
Owners report stalling, loss of speed, and multiple warning lights (brake, ABS, hill descent) appearing while driving. Some also note rattling noises and rough transitions between EV and gas modes in hybrids.
Complaints include simultaneous failure of electronic power steering and braking at highway speeds, as well as TPMS warnings followed by tire failure. These electrical glitches can compromise control and safety.
The system may fail to detect obstacles or activate unexpectedly, with some owners experiencing repeated incidents under similar conditions. This can erode trust in the safety technology.
Issues range from persistent sulfur odors to interior trim problems that can trap a driver's foot. These may seem minor but can distract or impair driving.
“Vehicle drove normally in the morning commute. In the afternoon commute it started normally and as i approached highway speeds the alarms started showing up. the Brake, hill descent system, abs, critical failure. the vehicle started losing speed and could not…”
“Vehicle makes rattling noises while accelerating similar to a diesel engine also rough transitions between EV mode and Gas mode also when you press the charge button the engine makes a very noticeable jerk once it’s on ,Honda does not want to fix my issue and…”
Official recalls
Safety recalls on record
Federal recall campaigns — the defect, the risk, and the fix. Confirm any open recall was completed before you buy.
Hyundai Ioniq 9 — 3 recalls
The defect: Hyundai Motor America (Hyundai) is recalling certain 2025-2026 IONIQ 5 and 2026 IONIQ 9 vehicles. The high voltage battery system may contain an improperly tightened bus bar, which can cause a short-circuit.
The risk: An electrical short in the high voltage battery system increases the risk of a fire.
The fix: Dealers will inspect and tighten the bus bar retention bolts and replace the battery system assembly, as necessary, free of charge. Owner notification letters were mailed April 3, 2026. Owners may contact Hyundai customer service at 1-855-…
The defect: Hyundai Motor America (Hyundai) is recalling certain 2025 Ioniq 5 and 2026 Ioniq 9 vehicles. The fasteners for the rear suspension may loosen and detach, which can result in a loss of vehicle control.
The risk: A loss of vehicle control increases the risk of a crash.
The fix: Dealers will inspect and replace the rear suspension fasteners and perform a rear vehicle alignment, as necessary, free of charge. Owner notification letters are expected to be mailed July 17, 2026. Owners may contact Hyundai customer serv…
The defect: Hyundai Motor America (Hyundai) is recalling certain 2026 Ioniq 9 vehicles equipped with a Limited, Calligraphy, or Calligraphy Design trim package. The second-row power seats may fail to detect a person. As a result, the seats may continue to move after contacting a person during powered seat func…
The risk: A person, especially a child, may become trapped by a rear powered seat, increasing the risk of injury.
The fix: Owners are advised to exercise caution when operating the second-row power seat functions until the repair is performed. Children are advised not to be in the rear seats or near the rear seating area during power-folding operation. The sea…
Honda Accord — 38 recalls
The defect: Honda (American Honda Motor Co.) is recalling certain 2023-2025 Honda Accord Hybrid vehicles. Due to a software error, the integrated control module (ICM) central processing unit (CPU) may reset while driving, causing a loss of drive power.
The risk: A loss of drive power increases the risk of a crash or injury.
The fix: Dealers will reprogram the ICM CPU software, free of charge. Owner notification letters were mailed January 6, 2026. Owners may contact Honda's customer service at 1-888-234-2138. Honda's number for this recall is TN2. Vehicle Identificati…
The defect: Honda (American Honda Motor Co.) is recalling certain 2023-2026 CR-V Hybrid, Accord Hybrid, and 2025-2026 CR-V Fuel Cell EV vehicles. When using the tire repair kit, pressure may build within the sealant bottle, causing the bottle cap to detach.
The risk: A detached bottle cap can become a projectile and strike the user or others nearby, increasing the risk of injury.
The fix: Dealers will replace the tire repair kit nozzle or sealant bottle, free of charge. Interim letters notifying owners of the safety risk were mailed July 27, 2026. Additional letters will be sent once the final remedy is available, anticipat…
The defect: Honda (American Honda Motor Co.) is recalling certain 2021 Accord Sedan, Accord Hybrid, CR-V, Ridgeline, 2022 Insight and CR-V Hybrid vehicles. The automatic locking retractor on the second-row center seat belt assembly may deactivate improperly, which can result in an unsecured child restraint sys…
The risk: An unsecured child restraint system can increase the risk of injury during a crash.
The fix: Dealers will replace the second-row center seat belt assembly, free of charge. Owner notification letters were mailed January 14, 2022. Owners may contact Honda customer service at 1-888-234-2138.
The defect: Honda (American Honda Motor Co.) is recalling certain 2020-2022 Pilot, Accord, Civic sedan, HR-V, Odyssey, 2020 Civic coupe, Fit, 2021-2022 Civic hatchback, 2021 Civic Type R, Insight, 2020-2021 CR-V, CR-V Hybrid, Passport, Ridgeline, Accord Hybrid, 2020 Acura MDX, 2022 Acura MDX, 2020-2022 Acura R…
The risk: An air bag that deploys unintentionally during a crash can increase the risk of injury.
The fix: Dealers will replace the seat weight sensors, free of charge. Owner notification letters were mailed March 28, 2024. This is a phased recall. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for these recalls ar…
Buyer analysis
Hyundai Ioniq 9 or Honda Accord: which should you buy?
The Hyundai Ioniq 9 has far fewer complaints per year (37 vs. 452) and fewer recalls (3 vs. 38), but its issues often involve critical electrical and propulsion failures. The Honda Accord has a much larger complaint volume and more crash-related reports, though many are from older model years. In practice, the Ioniq 9 may have fewer overall problems, but the ones reported can be severe and occur early in ownership.
Key differences
- The Ioniq 9 has 37 complaints per year vs. the Accord's 452, but the Ioniq 9's complaints often involve sudden loss of propulsion and braking failures.
- The Accord has 162 crash-related complaints and 3 deaths, while the Ioniq 9 has 0 crash-related and 0 deaths, though the Ioniq 9 has 4 injuries.
- Electrical system issues are top for both, but the Ioniq 9's ICCU failures can disable charging, while the Accord's electrical failures can lock up steering and brakes.
- The Accord has 38 recalls covering airbags, fuel pumps, and seat belts, while the Ioniq 9 has 3 recalls for battery, suspension, and seat fasteners.
- Check for any 'Check Electrical System' warnings or history of ICCU replacement; this part fails frequently and can leave you stranded.
- Test the forward collision avoidance and adaptive cruise control at highway speeds to ensure they don't unexpectedly deactivate or brake.
- Listen for engine rattling or rough transitions between EV and gas modes during a test drive, especially in hybrid models.
- Verify that electronic power steering and braking systems function smoothly at various speeds; any warning lights or hesitation could indicate a serious fault.
Before you buy
- Obtain a full vehicle history report and check for any open recalls on both models.
- For the Ioniq 9, ask the dealer to perform a diagnostic check on the ICCU and battery system.
- For the Accord, test drive at highway speeds and check for warning lights related to ABS, brakes, and power steering.
- Have a certified mechanic inspect the forward collision avoidance system and software updates.
- Review NHTSA complaints for the specific model year you're considering to see if patterns persist.
Year by year
Which model years to avoid
Complaints per model year for both vehicles — lower is better. The spikes are the years to scrutinize.
| Year | Hyundai Ioniq 9 | Honda Accord |
|---|---|---|
| 2026 | 37 | 10 |
Check the actual car
Comparing models is smart. Checking the VIN is essential.
Brand averages tell you the trend. A VIN check tells you what's wrong with the specific Hyundai Ioniq 9 or Honda Accord in front of you — accident history, open recalls and title records.
Go deeper
Full reliability reports
- Comparison
- Hyundai Ioniq 9 vs Honda Accord
- Hyundai Ioniq 9 total complaints
- 37
- Honda Accord total complaints
- 4,524
- Hyundai Ioniq 9 total recalls
- 3
- Honda Accord total recalls
- 38
- Hyundai Ioniq 9 avg complaints/year
- 37.0
- Honda Accord avg complaints/year
- 452.4
- More reliable overall
- Hyundai Ioniq 9
- Hyundai Ioniq 9 top complaint area
- ELECTRICAL SYSTEM
- Honda Accord top complaint area
- ENGINE