Austin Montego L (1989)
1989 Austin Montego L
CarHunch analysed 25,903 real MOT records for the 1989 Austin Montego L. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 1989 Austin Montego L has a first-time MOT pass rate of just 20%, far below the UK average of 80%, making it a genuinely unreliable proposition for any potential buyer. The diesel variant shows a 100% pass rate, but only 268 of the 25,903 vehicles analysed were diesel, so petrol examples dominate and fail consistently at 20%.
These Monteagos are 35 years old with a median mileage of 84,301—reasonable for their age—yet the zero average failures and advisories per vehicle is almost certainly a recording anomaly given the abysmal pass rate, suggesting either incomplete MOT history data or that only the hardiest survivors remain registered. If you're seriously considering one, treat the 20% pass rate as your baseline expectation: plan for immediate and ongoing repair costs, and have a pre-purchase inspection by a specialist in 1980s British Leyland vehicles.
What to check before buying a 1989 Austin Montego L
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 L
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%) | 25,635 | 0.2% | 0 |
| Diesel (1%) | 268 | 1% | 0.01 |
Mileage Distribution
Most 1989 Austin Montego L 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 L vehicles fall between 66,032 and 109,557 miles.
MOT History Averages
Found a specific Austin Montego L?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.