Mercedes 300d Diesel Auto (1993)
1993 Mercedes 300d Diesel Auto
CarHunch analysed 133 real MOT records for the 1993 Mercedes 300d Diesel Auto. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
This 1993 Mercedes 300D is a catastrophic MOT performer, with a 4% first-time pass rate versus the UK average of 80%—meaning 96 out of 100 fail their test on the first attempt. There are no dangerous defects on record, which is the only bright spot, but the near-total failure rate makes this model functionally unreliable for everyday use.
At 140,000 miles average, these cars have genuinely high mileage for their age, which partly explains the failures, though a 4% pass rate suggests systemic issues beyond normal wear. If you're considering one, budget heavily for immediate remedial work and be prepared for repeated MOT failures until major issues are resolved—these aren't vehicles you can simply maintain into compliance.
What to check before buying a 1993 Mercedes 300d Diesel Auto
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 Mercedes 300d Diesel Auto
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 (98%) | 130 | 3.6% | 0.05 |
| Petrol (2%) | 2 | 0% | 0 |
| Gas Bi-Fuel (1%) | 1 | 60% | 2 |
Mileage Distribution
Most 1993 Mercedes 300d Diesel Auto 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 1993 Mercedes 300d Diesel Auto vehicles fall between 134,494 and 143,585 miles.
MOT History Averages
Found a specific Mercedes 300d Diesel Auto?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.