Seat belts: buckle assembly
Free remedy
ON CERTAIN PASSENGER VEHICLES, THE SAFETY BELT BUCKLE MAY "FALSE LATCH" AND EXPOSE THE DRIVER TO UNRESTRAINED MOVEMENT DURING A CRASH.
Research · Compact Cars
1998 Kia SephiaRecalls, problems, MPG & safety
NHTSA lists 6 safety recalls and 491 owner complaints for the 1998 Kia Sephia. Most complaints involve service brakes, hydraulic (211) and engine and engine cooling (85). The EPA rates it 23–24 mpg combined.
Combined MPG
23–24mpg
EPA · 2 versions
NHTSA overall
—
Not rated by NCAP
Safety recalls
6campaigns
Latest Aug 2002
Owner complaints
491
Top: service brakes, hydraulic
Fuel cost / yr
$2,700est.
EPA estimate, best version
Safety recalls
6 NHTSA campaigns · applies to some vehicles, check your VIN
Exterior lighting: switch
Free remedy
ON CERTAIN PASSENGER VEHICLES WITH 36,000 MILES OR LESS AS OF JULY 15, 2002, AN ELECTRICAL CONTACT PROBLEM MAY HAVE DEVELOPED IN THE HAZARD SWITCH WHICH COULD RESULT IN INOPERATIVE HAZARD LIGHTS AND/OR INOPERATIVE TURN SIGNALS.
Engine and engine cooling: emission control
Free remedy
VEHICLE DESCRIPTION: PASSENGER VEHICLES. MANUFACTURING CHANGES WERE MADE TO THE ORVR SPRING FORCE AND FLOAT WIRE LENGTH REDUCING THE VALVE ANGLE. CERTAIN VALVES CAUSED FUEL SHUT OFF BEFORE THE TANK REACHED 95% OF NOMINAL CAPACITY.
Data from NHTSA Recalls API · synced Oct 28, 2026 · All recall detailsNHTSA vehicle page
Owner complaints by component
491 complaints filed with NHTSA · Jun 1998 – Nov 2019
- Service brakes, hydraulic211
- Engine and engine cooling85
- Electrical system78
- Power train58
- Fuel system, gasoline42
- Air bags27
- Visibility27
- Exterior lighting21
- Structure20
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Oct 28, 2026 · Full problem breakdownNHTSA vehicle page
What owners report most
Verbatim excerpts from NHTSA complaints, by component
Service brakes, hydraulic
211 reports9 crashes2 fires
“MY 1998 KIA SEPHIA REAR BRAKE PAD FELL OFF FELL OFF THE SHOE. APPARENTLY THEY ARE HELD ON BY GLUE. IT WAS REPLACED BUT I STILL HAVE PROBLEMS WHEN IT RAINS A LOT , THEY LOCK UP WHEN PARKED. I DON'T DARE USE MY EMERGENCY BRAKE BECAUSE THE BRAKES LOCK UP. *TR”
Engine and engine cooling
85 reports3 crashes5 fires
“MY WIFE WAS DRIVING OUR 1998 KIA SEPHIA AND THE ENGINE BEGAN TO STALL. SHE PULLED INTO A PARKING LOT AND THE ENGINE CAUGHT ON FIRE. MY WIFE RAN AWAY FORM THE VEHICLE. THE WHOLE FRONT OF THE CAR WAS BURNED UP. *NM”
Electrical system
78 reports5 crashes8 fires
“I BROUGHT A NEW KIA SEPHIA IN 1998, AND HAD NOTHING BUT TROUBLE WITH IT! TRANSMISSION WAS REPLACED 2 TIMES BY THE MECHANIC FOR KIA MOTORS, AND NEEDED TO BE REPLACED AGAIN ON 7/2007. ALSO , THE BRAKES HAVE BEEN REPLACED 4 TIMES AND NEED TO BE REPLACED AGAIN. NOW THE HEADLIGHTS KEEP TURNING OFF WHILE DRIVING AT NIGHT, BUT NO MECHANIC CAN LOCATE THE ELECTRICAL SHORT PROBLEM. *AK”
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 28, 2026
Engines, transmissions & drive
2 versions rated by the EPA
- EPA class
- Compact Cars
- Engines
- 1.8L 4-cyl
- Transmissions
- Manual 5-spd · Automatic 4-spd
- Drive
- Front-Wheel Drive
- Fuel
- Regular Gasoline
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
Data from EPA fueleconomy.gov · synced Oct 28, 2026EPA listing
EPA fuel economy by version
City / highway / combined, annual fuel cost and CO₂
EPA
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| Sephia Man 5-spd, 4 cyl, 1.8 L · Front-Wheel Drive | 21 | 28 | 24 | $2,700 | 370 |
| Sephia Auto 4-spd, 4 cyl, 1.8 L · Front-Wheel Drive | 20 | 29 | 23 | $2,800 | 386 |
- 24mpg comb.
- 23mpg comb.
Data from EPA fueleconomy.gov · synced Oct 28, 2026 · Fuel cost is EPA’s annual estimate (15,000 mi, 55% city)
NHTSA 5-Star Safety Ratings
New Car Assessment Program
NHTSA has not published 5-Star Safety Ratings for the 1998 Kia Sephia as of Oct 28, 2026.
Data from NHTSA NCAP Safety Ratings API · synced Oct 28, 2026
Maintenance basics
General guidance, not the OEM schedule. Check your owner’s manual.
General guidance
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
- Engine oil & filter5,000–10,000 mi
6–12 months - Tire rotation5,000–7,500 mi
Every oil change - Engine air filter15,000–30,000 mi
1–2 years - Cabin air filter15,000–25,000 mi
1–2 years - Brake fluid—
2–3 years - Coolant60,000–100,000 mi
5–10 years - Spark plugs60,000–100,000 mi
— - 12V battery—
3–5 years
Typical intervals for modern cars. Severe service (towing, short trips, extreme heat or cold) shortens them.
1998 Sephia questions
How many recalls does the 1998 Kia Sephia have?
6 safety recalls as of Oct 28, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.
What are the most common 1998 Kia Sephia problems?
Owners filed 491 complaints with NHTSA. The most-cited components are service brakes, hydraulic (211), engine and engine cooling (85), electrical system (78). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
What MPG does the 1998 Kia Sephia get?
The EPA rates the 1998 Kia Sephia at 23–24 mpg combined, depending on engine and drivetrain (2 versions rated).
Data from NHTSA & EPA · synced Oct 28, 2026