Buyer Research

2017 Kia Cadenza — Should You Buy One?

Typical asking price: $9,000–$15,000. There are 3 high-severity known issues you need to know before handing over a check.

Deciding between model years? Compare the 6 Kia Cadenza years we've written up →

Kestrel Take

A comfortable, heavily equipped full-size sedan that almost nobody bought new, which is why 32 complaints is the whole public record — a thin file, and a thin file is not a clean bill of health. What is in it points one direction: 38% of the complaints are the 3.3L Lambda II V6, and owners describe oil weeping from the pressure switch, coolant vanishing, knocking that gets louder, and a handful of engines that seized. Two recalls sit on top of that, one of them for an engine-bay fire risk serious enough that Kia told owners to park outside. Buy this car with a cold-start listen, a torch under the engine, and both campaigns shown closed against the VIN — and price in the chance that this engine is the expensive kind.

What we checked

Reconciled against public records, 2026-09-25

NHTSA holds 32 owner complaints for the 2017 Kia Cadenza, and 2 recall campaigns.

A big number here usually means a lot of these were sold, not that it is a bad vehicle — popular models collect more complaints for the same rate of trouble. So the total on its own says little. What is worth reading is the shape of it. 38% of them are about one thing — the engine. That much concentration is a genuine pattern rather than background noise, and it is the first thing to check on any example you look at.

2 recall campaigns cover this model year. Recalls are repaired free, for any owner, with no time limit on most safety campaigns — but only if someone books it in. Ask the seller to show it was done, or have any dealer check the VIN; it takes them a couple of minutes and costs nothing.

Counts come from the NHTSA complaint and recall database — free, public, and worth checking yourself.

Known Issues for the 2017 Kia Cadenza

Ranked by wallet impact. These are documented, recurring problems — not freak accidents. How we decide that.

3.3L Lambda II V6 — oil weeping from the pressure switch, coolant loss, knocking, seizuresHigh — wallet impact

Twelve of the 32 complaints are this engine, and they name a few repeat failures: the oil pressure switch seeping oil down into the wiring harness, coolant disappearing with no puddle under the car, a tick or knock from the top end that gets louder, and in several filings an engine that simply seized. Kia has extended engine coverage on this 3.3L in some other models; ask a Kia dealer to run this exact VIN for extended coverage or an open campaign before you hand over money, because the answer changes the math on the whole car.

Repair cost (estimate): $5,500–$9,000 for a replacement engine; $300–$700 if it is only the oil pressure switch and a harness clean-up — around 75% of what this car is typically worth

Source: NHTSA complaints filed under the engine (12).

ABS control unit can short-circuit and start a fire in the engine bay (recall)High — wallet impact

Recall 21V137 covers 2017–2021 Cadenza and Sportage: the circuit inside the Hydraulic Electronic Control Unit — the ABS module — can short and set light to the engine compartment, and Kia advised owners to park away from buildings until it was repaired. The electrical cluster here is only six complaints, but one is a fire that broke out in the engine bay minutes after a drive, and another describes a melted wiring harness found after the recall work was supposedly already done. Look the VIN up on NHTSA yourself instead of trusting the seller's memory.

Repair cost: $0 with the recall — verify it was performed

Source: NHTSA complaints filed under electrics and electronics (6); 2 NHTSA recall campaigns on this model year.

Brake vacuum hose can kink and stretch out your stopping distance (recall)High — wallet impact

Recall 17V190 is specific to the 2017 Cadenza: the vacuum hose feeding the brake booster can kink, the power assist weakens, and the car needs more room to stop than the driver expects. Dealers inspect and replace the hose at no charge. The campaign went out in April 2017 so most cars were done early, but a car that has changed hands a few times can slip through. On the test drive, a pedal that feels hard and sits high while the car coasts past where you meant to stop is the symptom to feel for.

Repair cost: $0 with the recall — verify it was performed

Source: 2 NHTSA recall campaigns on this model year.

Raw fuel smell after a fill-up, and direct-injection carbon on the intakeMedium

Five fuel complaints, splitting two ways. Several owners smell raw gasoline by the driver's side fuel door for days after filling the tank; one had the high-pressure fuel pump seal replaced and the smell returned 3,600 miles later. The rest is direct-injection carbon — deposits build on the intake valves and injectors on this engine however diligent the oil changes, and show up as a lumpy idle and a misfire code. Fill the tank during your test drive and stand by the left rear for a minute before you drive off.

Repair cost (estimate): $300–$1,200 for a pump seal or an injector service; $600–$900 for a walnut-blast intake decarbon

Source: NHTSA complaints filed under the fuel system (5).

Electric thermostat failures — heater blows cold, temperature gauge wandersMedium

One owner in this record is on their third electric thermostat, each time with an engine warning light and cold air from the heater. This V6 uses an electronically controlled thermostat rather than a wax pellet, and when it quits the temperature gauge swings and the engine runs cold or hot depending on where it stuck. Not a catastrophe, but it is a dealer part and it comes back. Run the heater to full hot on the test drive and watch the needle settle to the middle and stay there.

Repair cost (estimate): $500–$900

Source: NHTSA complaints filed under the engine (12).

Walk-Away Red Flags

✗Ticking or knocking from the top of the engine at cold start that does not quiet down
✗Oil film or wet grime spreading from the back of the engine down toward the bellhousing
✗Coolant level below the mark on the overflow bottle with no leak you can see
✗Raw fuel smell near the left rear after the tank is filled
✗Brake pedal that stays hard and high while the car rolls further than you intended

Good Signs

✓Recall 21V137 shown closed on the NHTSA VIN lookup
✓Recall 17V190 shown closed with the brake vacuum hose replacement on a dealer invoice
✓Oil-change receipts at 5,000-mile intervals from one shop
✓A dry engine underside when you run a finger around the oil pressure switch
✓A walnut-blast intake decarbon documented somewhere around 60,000 miles