2018 Kia CADENZA
Problems, Recalls & Reliability Report
Quick Summary
The 2018 Kia CADENZA has 7 owner complaints filed with NHTSA — that's 0.2x the segment average of 43. The most common issue is engine problems (71% of all complaints), specifically: 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 de. There is 1 recall issued for this model year.
7
Total Complaints
1
Recalls Issued
—/5
Safety Stars
0.2x
vs Segment Avg
Known Problems(top 2 of 2)
ENGINE
5 complaints- • 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 DE
- • 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
- • Vehicle has been properly maintained and at 78k miles, while at a stop sign, the engine seized. No warning signs from vehicle appeared.
“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 DE”
— NHTSA complaint filing
Recalls (1)
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.
Risk: An engine compartment fire can increase the risk of injury.
Fix: 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 contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC206.
Fuel Cost Calculator for 2018 Kia CADENZA
Live EIA pricesBased on EPA fuel-economy ratings and EIA weekly retail prices (2026-07-20). Real-world cost varies with driving style, trim/engine, terrain, and traffic.
5-Year Gas Price History
EIA weekly retail data · 2021 → todaySource: US Energy Information Administration weekly retail gasoline prices.
Estimated Insurance Cost for 2018 Kia CADENZA
How this estimate is calculated
Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.
Maintenance & Warranty
Recommended Kia CADENZA Service Intervals
Turbo engines (Optima 2.0T, Sorento 2.5T) may benefit from more frequent oil changes.
"Severe service" conditions (heavy towing, extreme temps, city stop-and-go) typically halve these intervals. Always consult your vehicle's owner's manual for the authoritative schedule.
Kia New-Vehicle Warranty Coverage
10 year powertrain not transferable to subsequent owners
These are the terms for a new Kia. If you're buying a used 2018 CADENZA, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Kia dealer for VIN-specific remaining warranty.
Estimated Repair Costs
Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.
🔍 Pre-Purchase Inspection Checklist
Based on 7 owner complaints for this specific year, here's what to check or ask about:
- ☐ENGINE: 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 DE
Typically appears around 50K miles. Repair cost ~$500
- ☐OTHER: 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 SMOK
Typically appears around 50K miles. Repair cost ~$500
- ☐RECALLS: Verify all 1 recall have been completed — free at any Kia dealer
- ☐General: Get a pre-purchase inspection from an independent mechanic ($100-$200)
Kia CADENZA — Year Comparison
How does 2018 compare to other years? Fewer complaints = more reliable.
NHTSA Safety Rating
No NHTSA safety rating available
At a Glance
- Complaints
- 7
- Recalls
- 1
- Fire reports
- 0
- Crash reports
- 0
- Injury reports
- 0
- Segment avg
- 43
Check a Specific VIN
See recalls for YOUR 2018 Kia CADENZA