What year Vauxhall Signum is most reliable?

Based on MOT first-test pass rates, the 2008 Vauxhall Signum has the highest pass rate at 72.7%, out of 100 vehicles tested.

What are the most common Vauxhall Signum MOT failures?

The most common Vauxhall Signum MOT failures vary by year. Check the individual year pages for detailed defect breakdowns — links in the table above.

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Vauxhall Signum — Reliability by Year

16,857 vehicles · MOT data 2003–2008 · first-test pass rates

This page shows MOT first-test pass rates for each year the Vauxhall Signum was manufactured — click any year to explore that cohort in detail. Trying to decide which year to buy? See the full buying guide →

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Best pass rate year

2008

72.7% pass rate · 100 vehicles

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Lowest pass rate year

2003

69.5% pass rate · 2,748 vehicles

Year	Pass rate	Avg mileage	Vehicles
2008	72.7%	88,023 mi	100
2007	72.5%	88,105 mi	1,597
2006	72.2%	85,244 mi	3,557
2005	70.5%	84,639 mi	3,516
2004	69.6%	81,657 mi	5,339
2003	69.5%	81,860 mi	2,748

Which year Vauxhall Signum is most reliable?

MOT pass rate by year of manufacture — averaged across each vehicle's lifetime of tests.

Tests range from an average of 81,657 miles (newest year) to 88,105 miles (oldest year). Older years naturally accumulate more tests at higher mileages — see the mileage-normalised breakdown →

Trying to decide which year to buy?

We've done the full analysis — which years to look for, which to avoid, and where to find the best value for reliability on a Vauxhall Signum.

See the buying guide →

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