Vauxhall Insignia Sri 158 Cdti (2012)
2012 Vauxhall Insignia Sri 158 Cdti
CarHunch analysed 163 real MOT records for the 2012 Vauxhall Insignia Sri 158 Cdti. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
This 2012 Insignia diesel is a poor first-time MOT performer, passing just 67.2% on initial test versus the UK average of 80%, which means nearly one in three fail their MOT. The good news is that dangerous defects are absent from this cohort, so failures are typically repairable issues rather than safety-critical problems.
At 105,900 miles median mileage for a 12-year-old car, these Insignias are running fairly high but not exceptionally so, and with an average of 0.98 failures per vehicle, you're looking at roughly one defect per MOT across the fleet. Before committing to buy one, budget for a pre-purchase inspection focusing on suspension, brakes, and emissions kit, since this diesel's weak MOT track record suggests these are the likely trouble spots.
What to check before buying a 2012 Vauxhall Insignia Sri 158 Cdti
Practical pre-purchase checks for this age and model.
- 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
- 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
- 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
- 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.
Before you buy a Vauxhall Insignia Sri 158 Cdti
MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Diesel (99%) | 162 | 67.2% | 0.97 |
| Gas Bi-Fuel (1%) | 1 | 66.7% | 2 |
Mileage Distribution
Most 2012 Vauxhall Insignia Sri 158 Cdti vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 2012 Vauxhall Insignia Sri 158 Cdti vehicles fall between 88,778 and 120,157 miles.
2012 Vauxhall Insignia Sri 158 Cdti — Still on the Road
70 vehicles still getting MOTs in 2025 — 58% of the peak remain.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2017–2025.
MOT History Averages
Found a specific Vauxhall Insignia Sri 158 Cdti?
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