NHTSA lists 2 safety recalls and 48 owner complaints for the 2015 Kia Cadenza. Most complaints involve electrical system (13) and engine (13). The EPA rates it 22 mpg combined.
Kia America, Inc. (Kia) is recalling certain 2010-2019 Borrego, 2014-2016 Cadenza, 2010-2013 Forte, Forte Koup, Sportage, 2015-2018 K900, 2011-2015 Optima, 2011-2013 Optima Hybrid, Soul, 2012-2017 Rio, 2011-2014 Sorento, and 2010-2011 Rondo vehicles. The Hydraulic Electronic Control Unit (HECU) may experience an electrical short, which can result in an engine compartment fire while parked or driving.
Kia Motors America (Kia) is recalling all 2014-2016 Cadenza vehicles. During manufacturing, the front windshield may not have been properly bonded to the vehicle, allowing it to detach.
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
“Vehicle: 2015 Kia Cadenza Issue: Open HECU Safety Recall — Fire Risk I am the owner of a 2015 Kia Cadenza with an open HECU recall related to a known fire risk. I have been experiencing a burning smell inside the cabin of the vehicle, consistent with the recall defect. Upon contacting Kia Consumer Assistance, I was advised not to drive the vehicle due to the fire risk and to have it towed to a dealer. However, after calling multiple Kia dealers in the Pittsburgh, PA area, the earliest available appointment is over one week away. Kia Consumer Assistance called dealers on my behalf and was unable to secure an earlier appointment. They said they could "Look into a potential reimbursement of $55/day for a rental vehicle." but could not confirm a loaner. I am concerned that Kia is not treating this recall with the urgency a fire risk warrants. I WAS NOT PROACTIVELY CONTACTED ABOUT THIS RECALL DESPITE MY VIN BEING AFFECTED. I am now without transportation, my vehicle cannot be safely driven or stored in an enclosed space, and I am waiting over a week for a repair on a vehicle that could combust. I am requesting NHTSA review whether Kia is adequately addressing this…”
“Engine seized. 3.3L Lambda II GDI. This is the 2nd Hyundai/KIA product that the engine has seized on me. Both with bearing failure. Neither on the list of recalled engines. You need to do a more thorough investigation into Hyundai/KIAs engines. The brands share the same power trains across the entire line up for a number of years. This class of engines has been produced for YEARS along with the Theta class of engines that you already forced Hyundai/KIA to recall. This seizure has cost me THOUSANDS and additional THOUSANDS that I am unable to pay. I was forced to do a voluntary surrender of the vehicle due to this repairs! BEFORE completing the suggested maintenance totaling over 5 thousand dollars the service tech should have warned me that the engine wasn't going to last much longer instead of telling me that the repairs were necessary and could be dangerous. The dealer and this company took advantage of me and who knows how many others! NHTSA needs to do something about Hyundai/KIA!”
“While driving on the freeway my rearview mirror suddenly came down causing a Crack across the windshield. "Recall on windshield"So I looked up recalls seen there is one for a loosening windshield. I took it to the dealership he said that couldn't happen and there is no way he can take windshield off to find out due to it being cracked. It's obviously the reason why. I can feel cold air when driving on freeway driverside top of windshield now that it's cold out. I was sent on my way. [XXX]”
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| Cadenza Auto 6-spd, 6 cyl, 3.3 L · Front-Wheel Drive | 19 | 28 | 22 | $2,900 | 404 |
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
2 safety recalls as of Oct 29, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.
Owners filed 48 complaints with NHTSA. The most-cited components are electrical system (13), engine (13), visibility (5). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 2015 Kia Cadenza at 22 mpg combined, depending on engine and drivetrain (1 version rated).