Mercedes 300d Diesel Auto (1990)
1990 Mercedes 300d Diesel Auto
CarHunch is tracking 238 1990 Mercedes 300d Diesel Auto vehicles on UK roads. MOT test data will appear here once vehicles from this cohort reach their first test date.
This 1990 Mercedes 300D has a first-time MOT pass rate of just 50%, well below the UK average of 80%, which means roughly half of these cars fail their test on first attempt. The good news is that dangerous defects are extremely rare (0%), and when failures do occur they're typically minor — averaging only 0.01 failures per vehicle with zero advisories recorded.
These 30-plus-year-old diesels are running at a median mileage of 170,554, which is genuinely high for their age and suggests the survivors in this cohort are robust workhorses. Before buying, have a pre-purchase inspection focus on the areas that commonly trip up older Mercedes — fuel system components, seals, and exhaust — since the 50% first-time pass rate points to wear items rather than structural problems.
We have 238 1990 Mercedes 300d Diesel Auto vehicles on record but don't have enough MOT test data to show reliable statistics for this cohort.
What to check before buying a 1990 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 (99%) | 236 | 0.6% | 0.01 |
| Petrol (1%) | 2 | 0% | 0 |
Mileage Distribution
Most 1990 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 1990 Mercedes 300d Diesel Auto vehicles fall between 124,641 and 170,554 miles.
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.