1999 Kia Sephia vs 1999 Mercury Cougar
Complaints, recalls, TSBs, investigations and safety ratings side by side, from official federal data. Last verified Aug 7, 2026. Raw complaint counts are not adjusted for sales volume.
| Metric | 1999 Kia Sephia | 1999 Mercury Cougar |
|---|---|---|
| NHTSA complaints | 428 | 454 |
| Recall campaigns | 2 | 5 |
| Service bulletins (TSBs) | 15 | 229 |
| Investigations | 8 | 1 |
| Crash reports | 50 | 23 |
| Fire reports | 42 | 3 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | 23–24 | 20–25 |
| Median reported incident mileage | 59,000 mi | 68,717 mi |
Reported problems side by side
| Component | Kia Sephia | Mercury Cougar |
|---|---|---|
| Service Brakes, Hydraulic | 169 | 72 |
| Electrical System | 63 | 99 |
| Engine and Engine Cooling | 88 | 67 |
| Power Train | 71 | 50 |
| Fuel System, Gasoline | 43 | 39 |
| Visibility | 18 | 52 |
| Air Bags | 37 | 31 |
| Structure | 17 | 34 |
Symptoms owners describe
| Stalling | 40 | 48 |
| Vibration / shaking | 38 | 16 |
| Brake problems | 15 | 12 |
| Hesitation / surging | 11 | 25 |
| Won’t start | 9 | 10 |
| Overheating | 9 | 0 |
| Check engine light | 7 | 12 |
| Electrical failures | 7 | 0 |
1999 Kia Sephia
1999 Mercury Cougar
Compare all Kia Sephia vs Mercury Cougar years →
Method. Complaints are unique NHTSA reports. A vehicle that sold more units will naturally accumulate more complaints — use shares and read the underlying reports before drawing conclusions.