Built from official NHTSA complaint and recall data · data through 07/14/2026
High complaint levelIts most-reported problem — Service Brakes, Hydraulic:foundation Components:disc — runs 7.5× the fleet median for that category across the 2075 model-years tracked on this site.
491Complaints
6Recalls
33Crashes
16Fires
19Injured
0Deaths
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 — Service Brakes, Hydraulic:foundation Components:disc (15.5% of complaints) — has no NHTSA recall or open investigation on file.
Service Brakes, Hydraulic:foundation Components:disc complaints here are 7.5× the median for that category across the 2075 model-years tracked on this site.
1 of the 6 most-reported categories on this page are backed by a recall or open investigation; the other 5 rest on owner reports alone.
Complaint category
Reports
Official status
Reference
Service Brakes, Hydraulic:foundation Components:disc
76 · 15.5%
No official action
—
Service Brakes, Hydraulic:foundation Components
68 · 13.8%
No official action
—
Engine And Engine Cooling:engine:gasoline
67 · 13.6%
Recalled
Recall 00V175000
Service Brakes, Hydraulic:foundation Components:disc:rotor
57 · 11.6%
No official action
—
Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip
46 · 9.4%
No official action
—
Power Train:automatic Transmission
37 · 7.5%
Investigation closed
PE00028
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.
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:PADS25 · 5.1%
ELECTRICAL SYSTEM:IGNITION23 · 4.7%
AIR BAGS:FRONTAL21 · 4.3%
Percentages are the share of the 491 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.
THIS WOULD CAUSE CUSTOMERS TO ADD MORE FUEL TO THE TANK CAUSING FUEL SPILLBACK OR SPITBACK FROM THE FUEL FILLER NECK. Recall repairs are free at authorized dealers.
PARK-IT: NO · PARK-OUTSIDE: NO · OVER-THE-AIR FIX: NO
IN THE EVENT OF A CRASH, THE SEAT OCCUPANT MAY NOT BE PROPERLY RESTRAINED, INCREASING THE RISK OF PERSONAL INJURY. Recall repairs are free at authorized dealers.
PARK-IT: NO · PARK-OUTSIDE: NO · OVER-THE-AIR FIX: NO
THIS CONDITION COULD CAUSE IMPAIRMENT OF VISIBILITY IN INCLEMENT WEATHER INCREASING THE RISK OF A CRASH. Recall repairs are free at authorized dealers.
PARK-IT: NO · PARK-OUTSIDE: NO · OVER-THE-AIR FIX: NO
THE LOSS OF TURN SIGNALS OR REAR HAZARD LAMPS COULD FAIL TO WARN A FOLLOWING DRIVER THAT THE VEHICLE IS TURNING AND/OR IS STOPPED AND COULD RESULT IN A CRASH. 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
“BRAKE PADS AND ROTORS ARE PREMATURELY WEARING OUT. COMPLETE BRAKE SYSTEM HAS BEEN REPLACED 5 TIMES.”NHTSA complaint 845075 — filed 08/16/1999 · SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC
“THIS WIIL BE THE 3RD TIME IN LESS THAN A YEAR THAT THE ROTORS HAVE WARPED.”NHTSA complaint 709627 — filed 08/05/1999 · SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC
“BRAKE ROTORS AND PADS NEEDED TO BE REPAIRED TWICE. WHICH CAUSED EXTENDED STOPPING DISTANCE, AND MAY HAVE RESULTED IN A A CRASH. PLEASE PROVIDE FURTHER…”NHTSA complaint 844325 — filed 08/04/1999 · SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC
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 1998 Kia Sephia?
Service brakes, hydraulic:foundation components:disc issues are the most-reported category, cited in 76 of 491 NHTSA complaints (15.5%), followed by service brakes, hydraulic:foundation components (68), engine and engine cooling:engine:gasoline (67), service brakes, hydraulic:foundation components:disc:rotor (57). Complaints are unverified owner reports.
How many complaints does the 1998 Kia Sephia have?
491 complaints were on file with NHTSA as of 07/14/2026. Of those, 33 involved a crash, 16 involved a fire, and 19 reported injuries. No deaths were reported.
Does the 1998 Kia Sephia have any recalls?
Yes — 6 NHTSA safety recall campaigns, including campaign 99V318000. Recall repairs are free at authorized dealers. Check your specific vehicle by VIN at nhtsa.gov/recalls.
Has NHTSA acted on the 1998 Kia Sephia's reported problems?
1 of the 6 most-reported complaint categories on this page is 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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