BMW Unknown (1998)
1998 BMW Unknown
CarHunch analysed 145 real MOT records for the 1998 BMW Unknown. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
This 1998 BMW is a serious red flag: just 6.1% pass on first attempt versus the UK average of 80%, and petrol variants manage only 4% — meaning 96 out of 100 fail their MOT at first try. On the positive side, no vehicles in this cohort have recorded dangerous defects, so catastrophic safety failures aren't the issue here.
The median mileage of 25,247 miles is unusually low for a 1998 model, suggesting these are either collectors' cars or have sat idle for years, which explains the surprisingly low failure count (0.03 per vehicle) — vehicles that barely run don't rack up typical wear-and-tear failures. Before buying, get a pre-purchase inspection to understand what's actually wrong with it, because a 6% pass rate tells you the MOT standard hasn't changed but this specific generation has aged very poorly.
What to check before buying a 1998 BMW 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 BMW 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 |
|---|---|---|---|
| Petrol (91%) | 132 | 4% | 0.02 |
| Diesel (6%) | 9 | 11.1% | 0 |
| Other (2%) | 3 | 89.2% | 0.67 |
| Gas (1%) | 1 | 0% | 0 |
Mileage Distribution
Most 1998 BMW Unknown 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 1998 BMW Unknown vehicles fall between 12,116 and 181,074 miles.
MOT History Averages
Most Common MOT Issues — 1998 BMW Unknown
Based on actual MOT test records for this model. Percentage shows how often each item appears across all vehicles in this cohort.
-
40%
Power steering component has slight seepage from a component rack
-
30%
Oil leak, but not excessive
-
30%
condensation in headlamps
-
30%
Vehicle has oil leak
-
20%
Nearside Front brake disc worn, pitted or scored, but not seriously weakened
-
20%
Windscreen has damage to an area less than a 10mm circle within zone 'A'
-
20%
Central Rear Upper Stop lamp(s) with a multiple light source up to 1/2 not functioning
-
20%
indicator bulbs becoming pale
Data covers a 3-year window centred on 1998. Counts include advisories and failures.
Found a specific BMW Unknown?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.