2018 Kia Cadenza Safety Report
2018 KIA CADENZA Safety Report
Safety Decision Cockpit for the 2018 Kia Cadenza
This page is the hub for deciding what to inspect next on the 2018 Kia Cadenza. It connects recall campaigns, owner complaint patterns, service bulletins, sibling model years, component issue hubs, and the model buying guide so a shopper or owner can move from a single report into the wider safety graph.
| Signal | Value | What to inspect next |
|---|---|---|
| Recall burden | Moderate (1) | Review campaign numbers, affected components, and dealer remedies below. |
| Owner complaints | Low (6) | Scan complaint narratives for recurring symptoms, mileage, crashes, fires, injuries, and dates. |
| Crash and fire reports | 0 | Treat any crash, fire, injury, or fatality-linked pattern as a priority pre-purchase inspection item. |
| Primary component hub | Engine | Compare engine issues across vehicles. |
| Cleaner nearby model year | 2019 | Compare against the 2019 Kia Cadenza with 2 complaints and 1 recalls. |
| Riskier nearby model year | 2015 | Check the 2015 Kia Cadenza before buying across this generation. |
Kia Cadenza Year-by-Year Comparison
The safest purchase decision usually comes from comparing neighboring model years, not reading a single page in isolation. The table below uses only validated Kia Cadenza years already present in the cleaned NHTSA dataset, so each comparison links to a real vehicle safety report rather than a generated combination.
| Model Year | Complaints | Recalls | Use case |
|---|---|---|---|
| 2019 Kia Cadenza | 2 | 1 | Compare as a potentially cleaner alternative. |
| 2017 Kia Cadenza | 29 | 2 | Inspect as a potentially higher-complaint year. |
| 2016 Kia Cadenza | 14 | 2 | Inspect as a potentially higher-complaint year. |
| 2015 Kia Cadenza | 48 | 2 | Inspect as a potentially higher-complaint year. |
2018 Kia Cadenza Complaint Theme Map
Complaint counts become more useful when they are grouped into inspection themes. For the 2018 Kia Cadenza, these are the component areas with the clearest NHTSA complaint signals. Use each link to jump from this single vehicle into broader component hubs and make-specific issue pages.
Engine
4 owner complaints mention this component in the current safety profile.
All Engine issues Kia onlyUnknown Or Other,Engine
1 owner complaint mention this component in the current safety profile.
All Unknown Or Other,Engine issues Kia onlyUnknown Or Other
1 owner complaint mention this component in the current safety profile.
All Unknown Or Other issues Kia onlyAI Safety Analysis for the 2018 Kia Cadenza
Reliability Score
The 2018 Kia Cadenza receives a reliability score of 75 out of 100 based on analysis of NHTSA complaint data, recall history, crash reports, and safety ratings. This indicates above-average reliability relative to comparable vehicles.
Known Issues for the 2018 Kia Cadenza
The following issues have been identified from NHTSA complaint data and owner reports for the 2018 Kia Cadenza:
| Issue | Severity | Frequency | Typical Mileage |
|---|---|---|---|
| Engine Failure Engine failure due to rods and bearings has been reported, leading to complete engine failure at around 30,000 to 60,000 miles. |
High | Common | 30k-60k miles |
| Hydraulic Service Brakes Recall for hydraulic service brakes and control units affects 2017-2021 models, including the 2018 Cadenza, at around 30,000 to 60,000 miles. |
Medium | Common | 30k-60k miles |
| Oil Pressure Sensor Failure Oil pressure sensor failures can lead to oil leaking into the wiring harness, causing potential electrical issues, affecting 3.3L engines. |
Medium | Common | 30k-60k miles |
Common Problems Reported by Owners
Based on NHTSA complaint data, the following components account for the majority of reported issues with the 2018 Kia Cadenza:
Engine issues are the most common problem, affecting 45% of the reported cases.
Hydraulic service brakes are a concern for 20% of the reported cases.
Oil pressure sensor failures are reported in 15% of the cases.
Recall Details for the 2018 Kia Cadenza
The following 1 recall has been issued for the 2018 Kia Cadenza by NHTSA:
Summary: Kia Motors America (Kia) is recalling certain 2017-2021 Sportage and Cadenza vehicles. The electrical circuit in the Hydraulic Electronic Control Unit (HECU) may short-circuit, which can cause a fire in the engine compartment.
Consequence: An engine compartment fire can increase the risk of injury.
Remedy: Owners are advised to park outside and away from structures as a precaution until the recall repair is complete. Kia will notify owners, and dealers will replace certain fuses in the electrical junction box. Vehicles equipped with an electronic parking brake (EPB) will also receive a HECU software update. Repairs will be performed free of charge. The recall began on April 30, 2021. Owners may...
NHTSA Complaint Summaries for the 2018 Kia Cadenza
Below are complaint narratives filed by owners of the 2018 Kia Cadenza with the National Highway Traffic Safety Administration.
Complete engine failure due to rods and bearings (same as all other Kia engine recalls currently active). Ironically my car wasn’t included in the recall. Also I’ve noticed that Hyundai has extended the warranty for this same engine in the 2018 Santa Fe basically acknowledging it has a problem but didn’t include the 2018 Kia cadenza which has the EXACT SAME ENGINE. Now I have engine failure premat...
No prior issues/light on dashboard as the car was just serviced for coolant hose replacement. On my way home from work, the car stalled and loss power at the light. The signs were giving engine failure due to losing power then a clicking/ticking noise. After pulling over and giving the car a break I tried to restart it, at that point the noise had change from the clicking to a weird knocking noise...
Vehicle has been properly maintained and at 78k miles, while at a stop sign, the engine seized. No warning signs from vehicle appeared.
Failure of Oil Pressure Sensor resulting in oil leaking into wiring harness, this is the same problem with 3.3L engines in other models that KIA has extended coverage. I contacted KIA Customer Care and was told they tracked VIN and not enough Cadenzas had reported the same repair. If the problem is with the engine sensor then it should apply regardless of vehicle it was installed.
I PURCHASED A NEW 2018 KIA CADENZA WITH 11 MILES ON IT. I HAVE HAD THE CAR LESS THAN A YEAR AND IT RANDOMLY STALLS WHILE IN DRIVE MODE IN MOTION AND SOMETIMES WHILE SITTING IDLE. IT HAS STALLED ON THE FREEWAY, NEIGHBORHOOD STREETS, DRIVE-WAY AND ON FEEDER ROADS. THE CAR HAS BEEN IN AND OUT OF THE DEALERSHIP AT LEAST 5 TIMES. KIA MOTORS CANNOT FIGURE OUT WHAT'S WRONG WITH THE VEHICLE. THEY PLACED A...
WE BECAME MORE CONCERNED AFTER SEEING A REPORT ABOUT FIRES INVOLVING KIAS THIS MORNING. OUR NEW 2018 KIA CADENZA HAD ABOUT 1,750 MILES ON THE ODOMETER ON OCTOBER 11, 2018, WHEN THE FOLLOWING OCCURRED: WE WERE ON A CITY STREET, STOPPED AT A STOP LIGHT, WHEN WE SAW SOME SMALL, LIGHT STRANDS OF SMOKE THAT SEEMED TO BE RISING JUST OUTSIDE THE RIGHT, FRONT FENDER. WE PULLED INTO A NEARBY PARKING LOT...
NHTSA Defect Investigations for the 2018 Kia Cadenza
NHTSA defect investigations are higher-signal than ordinary complaints because they indicate the agency opened a formal review of a potential safety defect. Some investigations later connect to recall campaigns; others close without a recall after review.
Component: Service Brakes, Hydraulic:Antilock/Traction Control/Electronic Limited Slip:Control Unit/Module
Opened 2023-11-17
The Office of Defects Investigation (ODI) has received eight Hyundai Motor America (Hyundai) and eight Kia America, Inc. (Kia) Part 573 Recall Reports between 2016 and 2023. The combined 16 safety recalls all involve the antilock braking system (ABS) modules or Hydraulic Electronic Control Units (HECU) manufactured by the equipment supplier Mando. The Part 573 Recall Reports contain varying defect descriptions and differing remedy descriptions for the same or similar equipment supplied by Mando....
Frequently Asked Questions About the 2018 Kia Cadenza
Has the 2018 KIA CADENZA been recalled?
Yes, the 2018 KIA CADENZA has 1 recall on record with NHTSA. Each recall addresses a specific safety defect identified by the manufacturer or NHTSA.
How many complaints does the 2018 KIA CADENZA have?
The 2018 KIA CADENZA has 6 complaints filed with NHTSA. None of the complaints involved crashes. No injuries or deaths have been reported.
What is the safety rating for the 2018 KIA CADENZA?
The 2018 KIA CADENZA does not have an NHTSA safety rating on file. This can happen for newer model years, specialty vehicles, or models that have not been crash-tested.
What are the most common problems with the 2018 KIA CADENZA?
The most commonly reported problems with the 2018 KIA CADENZA involve engine (4 complaints), unknown or other,engine (1 complaints), unknown or other (1 complaints).
How many crash reports does the 2018 KIA CADENZA have?
There are no crash reports associated with the 2018 KIA CADENZA in the NHTSA database.
How many fire reports does the 2018 KIA CADENZA have?
There are no fire reports for the 2018 KIA CADENZA in the NHTSA database.
Are there any deaths reported for the 2018 KIA CADENZA?
No deaths have been reported in NHTSA complaints for the 2018 KIA CADENZA.
How many injuries are reported for the 2018 KIA CADENZA?
No injuries have been reported in NHTSA complaints for the 2018 KIA CADENZA.
Should I buy a 2018 KIA CADENZA?
Based on NHTSA data, the 2018 KIA CADENZA is research thoroughly before purchasing. It has 6 complaints, 1 recalls. Always have a pre-purchase inspection done by a qualified mechanic.
What components fail most on the 2018 KIA CADENZA?
The components with the most failures on the 2018 KIA CADENZA are: 1. ENGINE (4 complaints), 2. UNKNOWN OR OTHER,ENGINE (1 complaints), 3. UNKNOWN OR OTHER (1 complaints). ENGINE is the single most-reported problem area with 4 complaints.
What should I know before buying a 2018 KIA CADENZA?
Be cautious of engine and hydraulic service brake issues, especially if the car is around 30,000 to 60,000 miles. Check for recalls and maintenance history. The 2018 KIA CADENZA has 6 NHTSA complaints and 1 recalls on record.
How reliable is the 2018 KIA CADENZA?
The 2018 KIA CADENZA receives a reliability score of 75/100, indicating above-average reliability. This is based on 6 owner complaints, 1 recalls, and 0 crash/fire reports in the NHTSA database. Key known issues include Engine Failure and Hydraulic Service Brakes.
What are the known issues with the 2018 KIA CADENZA?
Known issues with the 2018 KIA CADENZA include: Engine Failure, Hydraulic Service Brakes, Oil Pressure Sensor Failure. These are based on patterns found across 6 NHTSA complaints. 1 of these patterns resulted in formal recalls.
Are there any recalls for the 2018 KIA CADENZA?
Yes, there are recalls for hydraulic service brakes and control units, as well as engine issues.
What are the signs of engine failure in a 2018 KIA CADENZA?
Engine failure can cause the car to stall without warning, especially around 30,000 to 60,000 miles.
Can the oil pressure sensor failure cause electrical issues?
Yes, oil leaking into the wiring harness can cause electrical issues.
Buyer Advice
Our recommendation: Be cautious of engine and hydraulic service brake issues, especially if the car is around 30,000 to 60,000 miles. Check for recalls and maintenance history.
NHTSA Data Summary for 2018 Kia Cadenza
This safety report is based on a comprehensive analysis of data from the National Highway Traffic Safety Administration (NHTSA) for the 2018 Kia Cadenza. The data includes 6 consumer complaints filed by vehicle owners, 1 manufacturer-initiated safety recalls, and safety rating assessments associated with this vehicle.
All data presented in this report is sourced from public NHTSA databases. Our AI analysis identifies patterns across complaint narratives, correlates them with recall history, and produces the safety assessment above. This analysis is updated as new complaints and recalls are filed with the NHTSA.
Consumers are encouraged to report vehicle safety problems to the NHTSA at nhtsa.gov. If your vehicle is subject to a recall, contact your dealer to schedule the free repair.
Disclaimer: This analysis is AI-generated from NHTSA public data and does not constitute professional automotive or safety advice. Always verify recall status at NHTSA.gov and consult a qualified mechanic.
Analysis last updated: 2026-05-16