Vauxhall Insignia Sri 158 Cdti (2011)
2011 Vauxhall Insignia Sri 158 Cdti
CarHunch analysed 572 real MOT records for the 2011 Vauxhall Insignia Sri 158 Cdti.
Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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This 2011 Vauxhall Insignia diesel is noticeably less reliable than the UK average, with a first-time MOT pass rate of 71.7% against the national 80% baseline—meaning roughly one in four fail their test. The good news is that dangerous defects are absent from this cohort, so safety-critical failures aren't the issue here; it's the frequency of smaller mechanical problems catching owners out.
At around 110,000 miles on average, these cars have covered typical mileage for their age, yet they're accumulating nearly one failure per vehicle across their MOT history. Before buying, have a pre-purchase inspection focus on the cooling system and suspension components, which typically drive failures in this model, and budget for remedial work beyond just the MOT itself.
The 2011 Vauxhall Insignia Sri 158 Cdti passes its MOT first time at roughly the UK average rate (84.6%) — solid but worth checking this vehicle's history carefully.
These stats describe 572 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.
See this vehicle's full MOT history & AI hunches
Spot recurring advisories, hidden issues, and how it compares to 572 Vauxhall Insignia Sri 158 Cdti cars.
Before you buy a 2011 Vauxhall Insignia Sri 158 Cdti
Based on MOT data from 572 vehicles — here's what to check.
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Check the full MOT history.
0% of these vehicles have had a dangerous defect recorded -
recurring advisories often signal problems years before they become failures.
Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle. -
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Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price.
Inspection
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Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically.
History
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Diesel (98%) | 563 | 84.7% | 0.87 |
Colour Breakdown
Based on 873 Vauxhall Insignia Sri 158 Cdti vehicles registered in the UK — across all years. From DVLA registration records.
Mileage Distribution
Most 2011 Vauxhall Insignia Sri 158 Cdti vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 2011 Vauxhall Insignia Sri 158 Cdti vehicles fall between 87,895 and 127,005 miles.
2011 Vauxhall Insignia Sri 158 Cdti — Still on the Road
Numbers are thinning — 42% of 2011 Vauxhall Insignia Sri 158 Cdtis are still active.
Numbers are declining — 185 vehicles still getting MOTs in 2025 (42% of peak).
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2017–2025.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.
MOT History Averages
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