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Saab 9-3 vs Saab Sonnet: reliability comparison

MOT pass rates, common faults and mileage compared from real UK MOT data.

Saab 9-3
74%
MOT pass rate · 155,267 vehicles
Saab Sonnet
78%
MOT pass rate · 2 vehicles
Verdict: On MOT pass rate the Saab 9-3 (74%) and Saab Sonnet (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Saab 9-3 Saab Sonnet
MOT pass rate 74% 78% ✓
MOT failure rate 26% 22% ✓
Faults & advisories per test 1.9 0.3 ✓
Dangerous-fault share 1% 0% ✓
Average mileage 130,302 mi 379,088 mi
Sample size (vehicles) 155,267 2

Most common faults

Saab 9-3

  1. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  2. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  3. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  4. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  5. Oil leak, but not excessive (8.4.1 (a) (i))
  6. Oil leak

Saab Sonnet

  1. o/s/ sill corroded
  2. N/S/F brake binding slightly, front brake balance near limit.Handbrake perfomance only just met limits,N/S low reading.
  3. Offside Registration plate lamp not working (1.1.5c)
  4. Front passenger door cannot be opened from inside the vehicle (6.2.B.1b)
  5. Front passenger door cannot be opened from outside the vehicle (6.2.B.1b)
  6. Service brake: efficiency below requirements (3.7.B.7)

Reliability FAQ

On MOT pass rate the Saab 9-3 (74%) and Saab Sonnet (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Saab 9-3 report Full Saab Sonnet 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.