2015 Kia Optima: shudder or vibration when accelerating

Filed Apr 13, 2023 · Engine · MO

While driving down interstate highway 49/71, in the southbound lane of traffic, the engine failed. The vehicle began to shudder and shake and then stalled. There was barely enough time to pull off to the side of the road before it completely stalled. The dash did not display any warning symbols or anything to make me aware of any issue. There was a shuddering noise coming from under the hood that last about 45 seconds before the engine stalled. The vehicle has been taken to two mechanics and each one testified that the engine was blown and unworkable. A vehicle that is only eight years old should not have engine failure. Kia dealerships were notified only to state that there was no recall on this specific model and make it seem like engine failure is not relevant. The vehicle is just 50,000 miles out of warranty and still contains a lien. Engine failure such as this should be addressed please. Please note: No documents to upload - no repairs have been made and quotes for a new engine were all done verbally. Both mechanics stated that the engine cannot be re-built. They would have to replace the current engine with another, or new, Kia engine. The average cost for a new engine is around $4,200-$5,800.00.

Filed Mar 30, 2023 · Acceleration, Engine · 80,000 miles · GA

The contact owns a 2015 Kia Optima. The contact stated that while driving approximately 70 MPH, the vehicle inadvertently decelerated to 60 MPH. The vehicle began to shudder and failed to accelerate above 20 MPH. The check engine warning light was illuminated and flashing. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The approximate failure mileage was 80,000.

Filed Dec 2, 2019 · Engine · 80,000 miles · FL

Tl* the contact owns a 2015 kia optima. While driving 65 MPH, the vehicle failed to accelerate, shuddered, lost power, and shut off without warning. Also, an abnormal burning odor was detected. The vehicle was towed to an independent mechanic. The local dealer and manufacturer were not contacted. The vehicle was not diagnosed or repaired. The failure mileage was 80,000.

Filed Nov 11, 2019 · Engine · 96,436 miles · TX

Driving the vehicle down the feeder road of the beltway going about 40 to 45 miles per hour with no warning lights displayed or anything wrong and running normally then out of blue the engines sputters shudders and dies. This vehicle was a change the oil every 3,000 mile vehicle. I was fortunate to have an apartment driveway to coast into. Had vehicle towed to the shop I've used for 15 years and got the call the engine had seized up!

Filed Nov 15, 2018 · 34,000 miles · FL

In the past 2 months I have noticed my car shudders and shakes a lot when it is stopped at a stoplight or when parked with the engine idling it used to be that I didn't even know the car was running in either of these positions.