Saab 9-5 aero ttid4 vs Saab 99 gl: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Saab 9-5 aero ttid4
78%
MOT pass rate · 13 vehicles
Saab 99 gl
56%
MOT pass rate · 15,388 vehicles
Verdict: On MOT pass rate the Saab 9-5 aero ttid4 (78%) and Saab 99 gl (56%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Saab 9-5 aero ttid4 | Saab 99 gl |
|---|---|---|
| MOT pass rate | 78% ✓ | 56% |
| MOT failure rate | 22% ✓ | 44% |
| Faults & advisories per test | 0.6 ✓ | 3.0 |
| Dangerous-fault share | 0% | 0% |
| Average mileage | 126,709 mi | 135,154 mi |
| Sample size (vehicles) | 13 | 15,388 |
Most common faults
Saab 9-5 aero ttid4
- Offside Rear Shock absorbers has light misting of oil (5.3.2 (b))
- Steering lock not functioning (7.3 (a))
- Rear fog lamp not working (4.5.1 (a) (ii))
- 245/40R19
- Nearside Front Tyre worn close to legal limit/worn on edge JUST ABOVE THE TREAD WEAR BARS (5.2.3 (e))
- Offside Front Tyre worn close to legal limit/worn on edge JUST ABOVE THE TREAD WEAR BARS (5.2.3 (e))
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)
Reliability FAQ
On MOT pass rate the Saab 9-5 aero ttid4 (78%) and Saab 99 gl (56%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Saab 9-5 aero ttid4 report Full Saab 99 gl 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.