2017 Kia Optima — Known Issues & Recalls

Your engine seized and locked up, which you report is a known issue with Kia's Theta II 2.4L GDI engines. Kia refused to cover engine replacement, saying you hadn't completed a required KSDS ECU update recall — but Kia admits they didn't have your contact information on file, so you never received the recall notice. You believe Kia failed to properly notify you of this safety recall and is unfairly denying warranty coverage. The fix would likely involve a complete engine replacement or reprogramming of the engine control unit, depending on what Kia determines.

Your engine is burning through oil at an excessive rate—about 1 quart every 1,000 miles—requiring you to constantly top it off to avoid engine damage. Your check engine light came on, and a mechanic found that your PCV valve has failed and oil is coating your spark plugs. The dealership is refusing to perform a required diagnostic test under Kia's engine settlement unless you first pay $3,300 to replace the turbo, even though the turbo wasn't problematic before. Addressing this will likely require replacing the PCV valve, spark plugs, and possibly other engine components once the dealership performs the diagnostic.

Your engine completely shut down while you were driving. After having the engine replaced and other repairs done, you discovered this was part of a class action lawsuit. You've spent two years trying to recover the repair costs and the money you paid for the vehicle.

Your engine started having problems just three months after you bought the car. You've noticed jerking and shaking, a metal clicking noise, loss of power while driving, and declining overall performance. Kia has been attempting repairs for a year without fully resolving the issue. The fix will likely involve engine diagnostics, possible valve or timing component inspection, and potentially engine rebuild or replacement.

Your car lost power while driving at highway speeds and went into limp mode (reduced power mode) three separate times, with the check engine and hybrid warning lights coming on and off. The dealer couldn't reproduce the problem during testing, so no repair was made. The issue may involve the engine control computer or related sensors that need diagnostic scanning to identify the root cause.

Your engine is burning through oil much faster than normal—the dipstick showed completely dry before you hit 5,000 miles, requiring you to add oil to prevent engine damage. The dealership suggested waiting until the engine knocks or the knock sensor fails before addressing it, which risks serious engine damage if oil levels drop too low while driving.

Your engine is burning through oil at an unusually high rate, requiring you to add oil 3-5 times per month. The excess oil is fouling your spark plugs prematurely, forcing replacements every 10-12 months instead of the normal interval. This excessive oil consumption suggests an internal engine problem that will eventually lead to engine damage if not repaired.

Your 2017 Optima has been consuming oil constantly, requiring you to repeatedly replace spark plugs and ignition coils over the past year. You've also had the valve cover gasket replaced, and your diagnostic scanner shows code P1326. Your dealership says they won't replace the engine unless it starts knocking, but you're concerned about being stranded if you wait for that to happen.

Your 2017 Kia Optima is hesitating and stalling, especially when starting from a stop, with the check engine light on. The dealership diagnosed a faulty knock sensor and replaced it, but the problem persisted immediately after. Kia then recommended replacing the knock sensor again and performing a tune-up, but the car still runs in "limp home mode" and remains unsafe to drive. The engine was replaced two years ago under warranty for excessive oil consumption, and you believe this current issue should also be covered under Kia's stated lifetime warranty on replacement engines, but the dealership is declining to do so. A proper diagnostic scan and engine evaluation will be needed to determine if the engine requires replacement or if additional sensors and ignition components need service.

Your engine is burning oil faster than normal, and oil has accumulated on your spark plugs. This is causing the oil to be consumed during operation. Your mechanic may recommend a decarbonizing service to help clean carbon buildup inside the engine that could be contributing to the problem.

Your 2017 Kia Optima's engine has developed serious internal problems shortly after purchase, including a loud knocking sound from failing bearings, excessive oil consumption, and power loss. The engine may stall, seize, or potentially catch fire due to the bearing and piston ring damage. Your dealership has refused to repair or replace the engine despite these safety concerns. Engine repair or replacement will be needed to resolve this issue.

Your 2017 Optima Hybrid experienced a "check hybrid system" warning while driving at highway speed, causing the car to enter limp mode and lose power. You had to safely pull over on the freeway shoulder. A mechanic diagnosed a failed hybrid inverter (costing $2,177 to replace) and also detected engine knocking, which may indicate faulty factory rod bearings covered under Kia's extended warranty. The repair will likely involve replacing the hybrid inverter and potentially the engine if the rod bearing defect is confirmed.

Your 2017 Kia Optima with the 1.6T-GDi engine is consuming oil at an unusually high rate—you're adding 1 to 1.5 quarts every other day, totaling 7 quarts in three weeks. You're also hearing popping, clunking, and backfiring sounds that seem to come from the intake manifold or valve train area. This level of oil consumption and these noises suggest a serious internal engine problem that could lead to engine failure and leave you stranded.

Your car is experiencing an electrical system problem that's affecting the service brakes and engine. The exact nature of the issue isn't clearly documented. This could prevent your brakes from working properly or cause engine performance problems, so it should be diagnosed and repaired as soon as possible.

Your engine is experiencing sudden loss of power while driving and hesitation during acceleration. The dealer found timing and oil-flow component failures connected to internal engine damage. Your vehicle may stall unexpectedly, making it unsafe to drive. This likely requires internal engine repair or replacement to address bearing and timing system failures.

Your 2017 Kia Optima has experienced repeated safety issues that mechanics have tried to fix multiple times, but the problem keeps coming back. According to your service records, these unresolved issues have put your safety at risk. The manufacturer should investigate why the repairs haven't worked and provide a permanent solution.

While driving at 60 MPH, your car made an abnormal knocking sound and several systems stopped working — cruise control became unresponsive, the infotainment screen went dark, and the charging outlet no longer worked. The Check Engine light came on and off intermittently. A vehicle scanner revealed a knock sensor fault code indicating the engine was detecting excessive vibration. The issue occurred around 98,000 miles.

Your 2017 Kia Optima is losing engine oil at an unusually fast rate — you're needing to add oil almost every 2 weeks — without any warning light initially alerting you to the problem. A dealer inspection found that oil is leaking onto the catalytic converter, and the manufacturer has been notified of a potential connecting rod bearing issue. The repair will likely involve inspecting or replacing internal engine components and sealing the oil leak.

Your car is burning oil too quickly, which happened before and previously resulted in engine replacement under recall. Additionally, your steering wheel is locking when you turn it fully to the left. You also notice a strong gasoline smell when the engine is warming up. These issues may require engine inspection, steering system diagnosis, and fuel system evaluation.

Your 2017 Kia Optima's tail lights are continuing to fail due to a wiring harness problem that's covered under a recall, but your dealer only replaced the bulb instead of fixing the actual harness defect. Your tail lights keep malfunctioning and triggering warning lights, creating a safety issue and causing you to receive traffic tickets. The harness should be replaced as part of the recall repair, not just the bulb.