Vauxhall Signum MOT Pass Rate & Official DVSA Failure Statistics

Vauxhall Signum MOT History and Failure Rates vs UK National Average

The Vauxhall Signum passed on its first attempt in 62.2%, and its overall record sits −9.7 percentage points below the national average for all cars. These figures come from every recorded DVSA MOT test for the Vauxhall Signum in the 2023–2025 data: 4,800 tests across 6 model years (2003–2008). A test still carries exactly one pass or fail verdict.

Figures are computed from every recorded DVSA test for this model in the 2023–2025 data.

Most Common Vauxhall Signum MOT Problems by Failure Category

Every MOT failure a tester records belongs to one inspection section of the DVSA manual. For the Vauxhall Signum, the Lamps, reflectors and electrical equipment section leads the record — the breakdown below shows where the recorded failures cluster, then the exact strings behind the three biggest sections.

Shares are over the Vauxhall Signum's recorded defect strings, merged across its year pages.

Top Recorded Vauxhall Signum DVSA MOT Test Statistics & Defect Descriptions

The descriptions below are the exact DVSA failure strings testers recorded most often for the Vauxhall Signum, each with how many of the model's 4,800 tests it was noted on.

• "Registration plate lamp(s) inoperative in the case of multiple lamps or light sources" (Minor) — noted on about 457 Vauxhall Signum tests, 9.5% of the model's MOT record.
• "Coil spring fractured or broken" (Major) — noted on about 252 Vauxhall Signum tests, 5.3% of the model's MOT record.
• "Joints constant velocity boot severely deteriorated" (Minor) — noted on about 252 Vauxhall Signum tests, 5.2% of the model's MOT record.
• "Windscreen damaged but not adversely affecting driver's view" (Minor) — noted on about 203 Vauxhall Signum tests, 4.2% of the model's MOT record.
• "Headlamp lens slightly defective" (Minor) — noted on about 188 Vauxhall Signum tests, 3.9% of the model's MOT record.
• "Joints constant velocity boot split or insecure, no longer prevents the ingress of dirt" (Major) — noted on about 184 Vauxhall Signum tests, 3.8% of the model's MOT record.

Best and Worst Vauxhall Signum Model Years by Pass Rate

The strongest Vauxhall Signum model year on record is 2003 (73.8% across 191 tests), and the weakest is 2008 (68.3%). The gap between them is 5.5 points. Years with fewer than 50 recorded tests are excluded, so these are the years with enough MOT history to mean something.

Newest model year first. Only years with at least 50 recorded tests are listed.

Pre-MOT Inspection Checklist for Vauxhall Signum Owners

These checks follow this Vauxhall Signum's own most-recorded failure strings, starting with what a tester is most likely to flag on a Vauxhall Signum.

• the lights — “registration plate lamp(s) inoperative in the case of multiple lamps or light sources”

  Switch everything on and walk round the car: both headlamps on dip and main, every indicator, both brake lights, reverse, fog and the two number-plate lamps. A bulb is a few pounds and a five-minute job.

• the coil springs — “coil spring fractured or broken”

  Look up inside each wheel arch with a torch, all the way round the spring. A snapped spring usually breaks at the very bottom coil, where a quick glance will not reach.

• the windscreen — “windscreen damaged”

  Check the driver’s side of the screen within the swept area for chips and cracks; anything larger than 10mm in the driver’s central view is a fail. Most chips can be resin-repaired for far less than a new screen.

Derived from the DVSA failure strings testers recorded for the Vauxhall Signum. A check that finds nothing means the item is likely fine, not that the test is guaranteed.

Frequently Asked Questions: Vauxhall Signum MOT & Reliability