Vauxhall Insignia Sri Nav Cdti Eco S/s (2015)
2015 Vauxhall Insignia Sri Nav Cdti Eco S/s
CarHunch analysed 341 real MOT records for the 2015 Vauxhall Insignia Sri Nav Cdti Eco S/s. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
This 2015 Insignia diesel has a first-time pass rate of just 50.5%, nearly 30 percentage points below the UK average of 80%, which is a significant reliability red flag for any potential buyer. The good news is that dangerous defects are absent from this cohort, so the failures aren't safety-critical—but the sheer volume of them suggests these cars need proper pre-purchase inspection before committing.
With a median mileage of 91,498 miles for a nine-year-old car, these Insignias are running at typical wear levels, yet they're still averaging 0.44 failures per MOT attempt. Before buying, get a full diagnostic scan focused on the common diesel issues afflicting this generation—emissions components and turbo problems are likely culprits behind the low pass rate.
What to check before buying a 2015 Vauxhall Insignia Sri Nav Cdti Eco S/s
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 Nav Cdti Eco S/s
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%) | 338 | 50.3% | 0.43 |
| Gas Bi-Fuel (1%) | 3 | 75% | 1.33 |
Mileage Distribution
Most 2015 Vauxhall Insignia Sri Nav Cdti Eco S/s 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 2015 Vauxhall Insignia Sri Nav Cdti Eco S/s vehicles fall between 73,907 and 106,387 miles.
2015 Vauxhall Insignia Sri Nav Cdti Eco S/s — Still on the Road
Strong survival — 151 vehicles still getting MOTs in 2025, 94% of the peak.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2019–2025.
MOT History Averages
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Other model years — Vauxhall Insignia Sri Nav Cdti Eco S/s: