2018 Kia Cadenza Safety Report

2018 Kia Cadenza faces engine failure complaints and HECU fire recall, unrated for crash safety.

6Complaints
1Recalls
55/100Reliability Score
Most reported components: Engine (4)Unknown Or Other,Engine (1)Unknown Or Other (1)

AI Safety Analysis for the 2018 Kia Cadenza

The 2018 Kia Cadenza presents a mixed safety picture, primarily due to a significant engine concern despite a low overall complaint count. With only 6 total NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported, the vehicle appears statistically safe in terms of direct incident reporting. However, 4 out of these 6 complaints (67%) are related to the 'ENGINE' component, indicating a concentrated area of concern. These complaints describe severe issues such as complete engine failure due to rods and bearings, engine seizing at 78k miles, and stalling while in motion, mirroring known problems in other Kia/Hyundai 3.3L engines. Adding to this, the vehicle is subject to one recall (NHTSA ID: 20V750000) concerning the Hydraulic Electronic Control Unit (HECU). This recall, affecting 2017-2021 Sportage and Cadenza vehicles, addresses a potential electrical circuit short-circuit in the HECU that can lead to an engine compartment fire. One complaint specifically mentions seeing smoke and being concerned about Kia fires, which aligns with the recall's premise. While NHTSA has not conducted crash tests for the 2018 Kia Cadenza, leaving its crashworthiness unrated, the existing data points to potential mechanical reliability issues, particularly with the engine, and a fire risk associated with the HECU. The overall safety picture is therefore one of potential mechanical vulnerability rather than direct crash safety concerns. The low complaint volume might suggest these issues are not widespread across all units, but their severity and concentration on the engine, coupled with a fire-related recall, warrant careful consideration. The lack of NHTSA crash test ratings means its performance in collisions is unknown, shifting the focus to its operational reliability and the identified fire risk.

Reliability Score

The 2018 Kia Cadenza receives a reliability score of 55 out of 100 based on analysis of NHTSA complaint data, recall history, crash reports, and safety ratings. This indicates average reliability — some notable concerns exist that prospective buyers should be aware of.

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:

IssueSeverityFrequencyTypical Mileage
Engine Failure (Rods/Bearings/Seizing)
Multiple complaints detail complete engine failure, seizing, or stalling due to internal components like rods and bearings, similar to issues in other Kia/Hyundai 3.3L engines.		 High Occasional 30000-78000 miles
Hydraulic Electronic Control Unit (Hecu) Short-Circuit
Recall issued for HECU electrical circuit short-circuiting, posing a risk of engine compartment fire. One complaint mentioned smoke and fire concerns.		 High Rare 1750-unknown miles
Oil Pressure Sensor Failure/Leak
Complaint of oil pressure sensor failure leading to oil leaking into the wiring harness, a known issue in other Kia 3.3L engines.		 Medium Rare unknown 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 67% of complaints

The most significant pattern involves severe engine issues, including complete failure, seizing, and stalling, often linked to internal components like rods and bearings.

Frequently Asked Questions About the 2018 Kia Cadenza

Is the 2018 KIA CADENZA safe?

Based on NHTSA data, the 2018 Kia Cadenza has a low number of overall complaints (6 total) with no reported crashes, injuries, or deaths. However, it has a significant recall for a potential HECU short-circuit fire risk and a high percentage of complaints (67%) related to severe engine failures. Its crashworthiness is unrated by NHTSA.

What are common problems for the 2018 KIA CADENZA?

The most reported issues for the 2018 Kia Cadenza are concentrated on the ENGINE, with 4 out of 6 complaints detailing severe problems like complete engine failure, seizing, and stalling. There is also a recall for a Hydraulic Electronic Control Unit (HECU) short-circuit that can cause a fire.

Has the 2018 KIA CADENZA been recalled?

Yes, the 2018 Kia Cadenza has been subject to one recall (NHTSA ID: 20V750000). This recall addresses a potential electrical circuit short-circuit in the Hydraulic Electronic Control Unit (HECU) which can lead to an engine compartment fire.

Are there fire risks with the 2018 KIA CADENZA?

Yes, there is a known fire risk associated with the 2018 Kia Cadenza due to a recall (NHTSA ID: 20V750000). The recall states that the electrical circuit in the Hydraulic Electronic Control Unit (HECU) may short-circuit, which can cause an engine compartment fire. One complaint also mentioned seeing smoke and concerns about Kia fires.

Buyer Advice

Our recommendation: Given the severe engine failure complaints and a fire-related recall, potential buyers should prioritize a thorough pre-purchase inspection, especially of the engine and HECU, and ensure all recall remedies have been completed.

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.