Saab 99 gl vs Saab Sonet: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Saab 99 gl
56%
MOT pass rate · 15,388 vehicles
Saab Sonet
87%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Saab 99 gl (56%) and Saab Sonet (87%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Saab 99 gl | Saab Sonet |
|---|---|---|
| MOT pass rate | 56% | 87% ✓ |
| MOT failure rate | 44% | 13% ✓ |
| Faults & advisories per test | 3.0 | 0.2 ✓ |
| Dangerous-fault share | 0% | 0% |
| Average mileage | 135,154 mi | 96,020 mi |
| Sample size (vehicles) | 15,388 | 1 |
Most common faults
Saab 99 gl
- Parking brake: efficiency below requirements (3.7.B.7)
- Exhaust emissions carbon monoxide content excessive (7.3.B.1a)
- Nearside Rear Suspension component mounting prescribed area is excessively corroded (2.4.A.3)
- Offside Rear Suspension component mounting prescribed area is excessively corroded (2.4.A.3)
- Offside Rear fog lamp not working (1.3.2b)
- Parking brake lever has no reserve travel (3.1.6b)
Saab Sonet
- Indicator switch faulty (1.4.A.1)
- Offside Registration plate lamp not working (1.1.5c)
- Offside Front Front wheel bearing has excessive play (2.5.A.3c)
- Oil leak
Reliability FAQ
On MOT pass rate the Saab 99 gl (56%) and Saab Sonet (87%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Saab 99 gl report Full Saab Sonet report Most reliable cars
Pass rates are computed over completed (pass/fail) MOT tests. Reliability also depends on age, mileage and upkeep — see each model's page for the full picture.