Mazda 3 (2003)
2003 Mazda 3
CarHunch analysed 197 real MOT records for the 2003 Mazda 3. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 2003 Mazda 3's 74.1% first-time pass rate sits 5.9 points below the UK average, signalling moderate reliability concerns—but the real red flag is that a third of these cars have recorded dangerous defects during their MOT history, which is well above the typical threshold and suggests buyers should factor in potential safety-critical repairs. At nearly 74,000 miles on average, these cars show typical mileage for their age, yet they're accumulating nearly 4 failures per test and almost 20 advisories, indicating wear across multiple systems rather than isolated problem areas.
Any 2003 Mazda 3 you consider should be inspected by a trusted mechanic before purchase, with particular attention to the systems generating those recurring advisories—brake wear, suspension, and exhaust components are common culprits in this generation—and you should walk away if the seller can't produce a full MOT history showing the pattern of defects.
What to check before buying a 2003 Mazda 3
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.
- ⚠️ 33.5% of these vehicles have had a dangerous defect recorded. Enter the reg below — the full MOT history will show exactly what was flagged and whether it was resolved.
- 📄 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 Mazda 3
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%) | 195 | 74.1% | 3.88 |
| Diesel (1%) | 2 | 73.9% | 3.5 |
Mileage Distribution
Most 2003 Mazda 3 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 2003 Mazda 3 vehicles fall between 60,821 and 86,356 miles.
2003 Mazda 3 — Still on the Road
Numbers are declining — 12 vehicles still getting MOTs in 2023 (8% of peak).
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2014–2023.
MOT History Averages
Most Common MOT Issues — 2003 Mazda 3
Based on actual MOT test records for this model. Percentage shows how often each item appears across all vehicles in this cohort.
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107.4%
Nearside Front Tyre worn close to the legal limit
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89.6%
Offside Front Tyre worn close to the legal limit
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61.4%
Offside Rear Tyre worn close to the legal limit
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55.9%
Nearside Rear Tyre worn close to the legal limit
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45%
Front Brake pad(s) wearing thin
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44.1%
Rear Brake pad(s) wearing thin
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32.2%
Nearside Front Suspension arm rubber bush deteriorated but not resulting in excessive movement
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31.2%
Child seat fitted not allowing full inspection of adult belt
Data covers a 3-year window centred on 2003. Counts include advisories and failures.
Found a specific Mazda 3?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.