Built from official NHTSA complaint and recall data · data through 07/14/2026
High complaint levelIts most-reported problem — Engine — runs 4.5× the fleet median for that category across the 2583 model-years tracked on this site.
748Complaints
5Recalls
26Crashes
19Fires
21Injured
1Deaths
Source: U.S. NHTSA complaint & recall data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
Is this problem acknowledged?
The most-reported problem — Engine (56.3% of complaints) — was examined in a now-closed NHTSA investigation that did not result in a recall.
Engine complaints here are 4.5× the median for that category across the 2583 model-years tracked on this site.
2 of the 6 most-reported categories on this page are backed by a recall or open investigation; the other 4 rest on owner reports alone.
Complaint category
Reports
Official status
Reference
Engine
421 · 56.3%
Investigation closed
DP22003
Electrical System
96 · 12.8%
No official action
—
Power Train
70 · 9.4%
Recalled
Recall 16V705000
Fuel/propulsion System
53 · 7.1%
Recalled
Recall 18V907000
Exterior Lighting
43 · 5.7%
No official action
—
Structure:body
39 · 5.2%
No official action
—
Recalled = an NHTSA safety recall covers this category, so a free repair exists. Under investigation = NHTSA has an open probe but no recall yet. Investigation closed = NHTSA examined it and closed the probe — this is not a defect finding; where a closed probe led to a recall we name the campaign. Not available = recall or investigation data could not be confirmed for this vehicle — it is not a “no”. Categories are matched by NHTSA's top-level component. Check your VIN at nhtsa.gov/recalls.
Percentages are the share of the 748 complaints citing each component; one complaint can cite several components. “Unspecified / other” is NHTSA’s own catch-all category — we show it rather than hide it.
Recalls — 5 campaigns
Fuel System, Gasoline:delivery:hoses, Lines/piping, And Fittings
If the driveshaft cracks and separates from the vehicle, it will not be able to move forward. Additionally, if the parking brake is not applied upon exiting the vehicle, the vehicle may roll. Either scenario can increase the risk of a crash. Recall repairs are free at authorized dealers.
PARK-IT: NO · PARK-OUTSIDE: NO · OVER-THE-AIR FIX: NO
A person inside the trunk compartment may become trapped, increasing their risk of injury. Recall repairs are free at authorized dealers.
PARK-IT: NO · PARK-OUTSIDE: NO · OVER-THE-AIR FIX: NO
Park itPark outside Specimen badges — shown on a recall card only when NHTSA sets the flag. None of the campaigns above carries either flag. Always check your own vehicle by VIN at nhtsa.gov/recalls.
What owners report
“P1326 ENGINE CODE CAME ON WHILE DRIVING 60MPH ON THE INTERSTATE. LUCKILY WAS IN FAR LEFT LANE WHEN ENGINE SHUT OFF AND WAS SAFELY ABLE…”NHTSA complaint 11283209 — filed 12/02/2019 · ENGINE
“E - C V V T SEAL SEATING ISSUE. MY 2016 KIA OPTIMA IS GIVING AN OBD II ERROR CODE OF P0010 "A" CAMSHAFT POSITION…”NHTSA complaint 11283015 — filed 11/30/2019 · ENGINE
“I AM STARTING TO EXPERIENCE ENGINE TROUBLE WITH MY 2016 KIA OPTIMA. I PURCHASED THE VEHICLE NEW WITH 0 MILES. MY ISSUE STATED ON FRIDAY…”NHTSA complaint 11267758 — filed 10/10/2019 · ENGINE
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Complaint trend by year filed
Frequently asked questions
What are the most common problems with the 2016 Kia Optima?
Engine issues are the most-reported category, cited in 421 of 748 NHTSA complaints (56.3%), followed by unspecified/other issues (121), electrical system (96), power train (70). Complaints are unverified owner reports.
How many complaints does the 2016 Kia Optima have?
748 complaints were on file with NHTSA as of 07/14/2026. Of those, 26 involved a crash, 19 involved a fire, and 21 reported injuries. 1 deaths were reported.
Does the 2016 Kia Optima have any recalls?
Yes — 5 NHTSA safety recall campaigns, including campaign 18V907000. Recall repairs are free at authorized dealers. Check your specific vehicle by VIN at nhtsa.gov/recalls.
Has NHTSA acted on the 2016 Kia Optima's reported problems?
2 of the 6 most-reported complaint categories on this page are backed by an NHTSA safety recall or open investigation; the rest are unverified owner reports. A recall means a free repair is available at authorized dealers.
Is a complaint proof of a defect?
No. Complaints are reports submitted by consumers to NHTSA. NHTSA does not verify individual complaints, and a complaint is not proof that a defect exists.
About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/14/2026.
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