Built from official NHTSA complaint and recall data · data through 07/14/2026
High complaint levelIts most-reported problem — Electrical System — runs 2.6× the fleet median for that category across the 2547 model-years tracked on this site.
154Complaints
6Recalls
7Crashes
2Fires
7Injured
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 — Electrical System (27.9% of complaints) — has no NHTSA recall or open investigation on file.
Electrical System complaints here are 2.6× the median for that category across the 2547 model-years tracked on this site.
3 of the 6 most-reported categories on this page are backed by a recall or open investigation; the other 3 rest on owner reports alone.
Complaint category
Reports
Official status
Reference
Electrical System
43 · 27.9%
No official action
—
Fuel/propulsion System
39 · 25.3%
Recalled
Recall 21V519000 · Recall 25V794000
Engine
26 · 16.9%
No official action
—
Power Train
16 · 10.4%
Recalled
Recall 22V760000
Air Bags
10 · 6.5%
Recalled
Recall 21V164000 · Recall 23V149000
Structure:body
9 · 5.8%
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 154 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.
In the event of a crash, deployment of the front passenger air bag, with a child in that seat, can increase the risk of injury to the child. Recall repairs are free at authorized dealers.
PARK-IT: NO · PARK-OUTSIDE: NO · OVER-THE-AIR FIX: NO
Fuel System, Gasoline:delivery:hoses, Lines/piping, And Fittings
A melted fuel tank can leak, increasing the risk of a fire. 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
“Air/hearing works intermittently. Iâve had fuses replaced and this seems to be a known and ongoing issue that Kia refuses to acknowledge. Many have reported…”NHTSA complaint 11674755 — filed 07/19/2025 · ELECTRICAL SYSTEM
“Having issues with the blower motor and harness which is a known issue with this car. I canât keep my AC working plus my defroster…”NHTSA complaint 11662629 — filed 05/22/2025 · ELECTRICAL SYSTEM
“Main wiring harness melted in my fuse box, had to pay $5000 to replace, turbo leaked into my engine and cause for the engine to…”NHTSA complaint 11661765 — filed 05/19/2025 · ELECTRICAL SYSTEM
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 2021 Kia K5?
Electrical system issues are the most-reported category, cited in 43 of 154 NHTSA complaints (27.9%), followed by fuel/propulsion system (39), unspecified/other issues (31), engine (26). Complaints are unverified owner reports.
How many complaints does the 2021 Kia K5 have?
154 complaints were on file with NHTSA as of 07/14/2026. Of those, 7 involved a crash, 2 involved a fire, and 7 reported injuries. 1 deaths were reported.
Does the 2021 Kia K5 have any recalls?
Yes — 6 NHTSA safety recall campaigns, including campaign 21V164000. Recall repairs are free at authorized dealers. Check your specific vehicle by VIN at nhtsa.gov/recalls.
Has NHTSA acted on the 2021 Kia K5's reported problems?
3 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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