2015 Kia Optima · symptom sheet
Battery dies or the car will not start
- 30owner reports
- 85,000median miles
- $1,522median quote
- 2involved a crash
Newest report Dec 9, 2025 · checked Oct 2, 2026
135 of the 1,006 complaints on this car are about the electrical system. 30 of those describe dead battery.
Tick what matches of 30 reports
Dead battery on other Optima years
No other Optima model year has enough reports of dead battery for a sheet of its own. See every Optima year.
What this problem usually is
These owners walk out to a car that's dead. Some find it drained after sitting only a day or two, some need a jump start every week, and some have had the battery replaced more than once without the problem going away. A good number describe the dealer testing the battery, calling it fine, and sending them home.
What got replaced
Owners who name the part that was replaced mention the battery (23 reports), the starter (5 reports) and the alternator (4 reports).
Recalls and investigations
No recall on the electrical system covers the 2015 model year as of Oct 2, 2026.
NHTSA investigations into the electrical system on the Optima
Non-crash vehicle fires. Closed dec 22, 2021, led to recall 20V-088.
Non-crash vehicle fires. Closed may 10, 2019, led to recall 18V-907.
None of these investigations covers the 2015 model year.
What owners paid
8 of the 30 reports quote a price. Each dot is one quote. The middle half runs $450 to $4,080.
When it happens
The middle half of failures fell between 58,556 and 129,403 miles, from the 14 reports that gave a mileage.
What owners wrote
“I driving my vehicle is just started powering down and didnât want to turn on again. We jumped started it thinking it was the battery but it checked out fine. The vehicle doesnât want to start anymore and the mobile mechanic said the engine had ti be replaced since it was off the timing loop. No engine or vehicle lights were in and no prior issues were appearing.”
Filed Jul 20, 2023
“not really sure my car just started making a clicking noise out of no where & powered off & now it wont detect key or wont start up”
Filed Jul 6, 2022
Should you keep driving it?
This page can't tell you that. 2 of 30 reports involved a crash and 2 people were hurt. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.
Guide Taking it to a shop? How to describe this problem so it gets found
Other problems on this car
- Engine failure, knocking or rod bearing 319 reports
- Engine stalls or loses power while driving 256 reports
- Check engine light or misfire 108 reports
- Brakes grind, pulse or wear early 89 reports
- Vehicle fire 70 reports
- Paint peels or body rusts 56 reports
- Engine rattles or ticks 49 reports
- Burns oil or oil level rises 37 reports
- Airbag warning light or recall 26 reports