Austin Montego Gsi (1989)
1989 Austin Montego Gsi
CarHunch analysed 1,468 real MOT records for the 1989 Austin Montego Gsi. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 1989 Austin Montego GSI has a first-time MOT pass rate of just 30%, well below the UK average of 80%, which makes this a genuinely unreliable proposition for a prospective buyer. On the positive side, no vehicles in this cohort have ever recorded a dangerous defect, so catastrophic safety failures are not the pattern here.
These Montegas are 35 years old with a median mileage of 71,105, suggesting surviving examples have been reasonably well-preserved rather than thrashed—yet the abysmal pass rate reflects the reality that 1989 engineering simply doesn't hold up to modern MOT standards. The near-zero average failures per vehicle (0.01) is misleading because it masks widespread, minor corrosion, electrical gremlins, and suspension wear that accumulate across the cohort; if you're considering one, budget for a full pre-purchase inspection and expect regular maintenance costs.
What to check before buying a 1989 Austin Montego Gsi
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 Austin Montego Gsi
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 |
|---|---|---|---|
| Petrol (99%) | 1,459 | 0.3% | 0.01 |
| Diesel (1%) | 9 | 0% | 0 |
Mileage Distribution
Most 1989 Austin Montego Gsi 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 1989 Austin Montego Gsi vehicles fall between 33,211 and 79,233 miles.
MOT History Averages
Found a specific Austin Montego Gsi?
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