2018 Kia Optima vehicle speed control problems
10 owner complaints filed with NHTSA name the vehicle speed control on the 2018 Kia Optima — 4% of all complaints for this model year.
What owners report
“Purchased car about 4 months ago, before warranty ran out, the shop looked at it told me it was fine, it wouldn't accelerate. Few weeks later same issue but all my oil was gone, they found 11 things wrong with the vehicle, told me warranty wouldn't take care of it unless the engine blow up. The…”
filed Jul 10, 2025
“My engine burns oil very bad. Black smoke comes out of my tailpipe and I burn through 5 quarts in less than a thousand miles. I just got my oil changed two weeks again and I just had to add more oil to my car bc it was empty. I’ve had to replace the spark plugs twice due to soot build up. I can’t…”
filed Jan 20, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Vehicle Speed Control problems in other Optima years
| Year | Reports | Share |
|---|---|---|
| 2020 Optima | 6 | 4% |
| 2019 Optima | 10 | 5% |
| 2017 Optima | 13 | 5% |
| 2016 Optima | 29 | 4% |
| 2015 Optima | 35 | 3% |
| 2014 Optima | 21 | 4% |
| 2013 Optima | 39 | 3% |
| 2012 Optima | 40 | 4% |
| 2011 Optima | 19 | 3% |
| 2010 Optima | 6 | 8% |
| 2009 Optima | 11 | 9% |
| 2008 Optima | 7 | 5% |
Other reported problem areas on the 2018 Kia Optima
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.