Case Unknown (1998)
1998 Case Unknown
CarHunch is tracking 358 1998 Case Unknown vehicles on UK roads. MOT test data will appear here once vehicles from this cohort reach their first test date.
This 1998 CASE UNKNOWN has a 0% first-time pass rate against the UK average of 80%, which is a complete red flag—every single vehicle in this dataset failed its MOT. The fact that 356 of the 358 vehicles are diesel models suggests either a systematic issue with this particular cohort or a data quality problem that makes any reliability assessment unreliable.
With zero recorded failures, advisories, and dangerous defects across the dataset, something is clearly wrong with how this data has been captured or categorised. Do not rely on these figures to make a purchase decision; instead, insist on a full pre-purchase inspection from an independent mechanic and request the specific MOT history from the DVLA before considering any vehicle from this cohort.
We have 358 1998 Case Unknown vehicles in our database, but the DVLA's digital MOT records for vehicles of this age don't include reliable pass/fail outcomes — detailed test statistics aren't available for this vintage.
What to check before buying a 1998 Case Unknown
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 Case Unknown
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%) | 356 | 0% | 0 |
| Electric (0%) | 1 | 0% | 0 |
| Petrol (0%) | 1 | 0% | 0 |
Found a specific Case Unknown?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.