1999 Audi A4 vs 1999 Mercury Cougar
Complaints, recalls, TSBs, investigations and safety ratings side by side, from official federal data. Last verified Aug 8, 2026. Raw complaint counts are not adjusted for sales volume.
| Metric | 1999 Audi A4 | 1999 Mercury Cougar |
|---|---|---|
| NHTSA complaints | 190 | 454 |
| Recall campaigns | 2 | 5 |
| Service bulletins (TSBs) | 73 | 229 |
| Investigations | 5 | 1 |
| Crash reports | 9 | 23 |
| Fire reports | 2 | 3 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | 20–24 | 20–25 |
| Median reported incident mileage | 75,000 mi | 68,717 mi |
Reported problems side by side
| Component | Audi A4 | Mercury Cougar |
|---|---|---|
| Service Brakes, Hydraulic | 81 | 72 |
| Electrical System | 11 | 99 |
| Engine and Engine Cooling | 28 | 67 |
| Power Train | 10 | 50 |
| Visibility | 5 | 52 |
| Vehicle Speed Control | 16 | 31 |
| Fuel System, Gasoline | 4 | 39 |
| Air Bags | 8 | 31 |
Symptoms owners describe
| Stalling | 8 | 48 |
| Hesitation / surging | 7 | 25 |
| Brake problems | 6 | 12 |
| Vibration / shaking | 0 | 16 |
| Check engine light | 0 | 12 |
| Loss of power | 0 | 11 |
| Won’t start | 0 | 10 |
| Clunking / rattling | 0 | 10 |
1999 Audi A4
1999 Mercury Cougar
Compare all Audi A4 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.