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Vauxhall Signnum vs Vauxhall Vectra: reliability comparison

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

Vauxhall Signnum
67%
MOT pass rate · 1 vehicles
Vauxhall Vectra
67%
MOT pass rate · 740,983 vehicles
Verdict: On MOT pass rate the Vauxhall Signnum (67%) and Vauxhall Vectra (67%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Vauxhall Signnum Vauxhall Vectra
MOT pass rate 67% 67%
MOT failure rate 33% 33%
Faults & advisories per test 2.7 2.3 ✓
Dangerous-fault share 0% ✓ 1%
Average mileage 168,851 mi 126,456 mi
Sample size (vehicles) 1 740,983

Most common faults

Vauxhall Signnum

  1. Nearside Rear Tyre tread depth below requirements of 1.6mm (4.1.E.1)
  2. Exhaust emits smoke under acceleration but not excessive
  3. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  4. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  5. Rear Exhaust has part of the system slightly deteriorated (7.1.1a)
  6. n/s/f inner cv boot split

Vauxhall Vectra

  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
  6. Offside Rear Brake pipe slightly corroded (3.6.B.2c)

Reliability FAQ

On MOT pass rate the Vauxhall Signnum (67%) and Vauxhall Vectra (67%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Vauxhall Signnum report Full Vauxhall Vectra 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.