Mazda 323 (2003)
2003 Mazda 323
CarHunch analysed 6,103 real MOT records for the 2003 Mazda 323.
Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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The 2003 Mazda 323 passes its MOT at 73.2%, well below the UK average of 80%, and nearly a third of these cars have recorded dangerous defects at some point—a significant concern for any buyer. Diesel versions fare slightly worse at 69.9% pass rate compared to petrol's 73.4%, suggesting fuel type offers little reliability advantage here.
At around 58,000 miles median, these 20-year-old cars show relatively modest mileage, yet they're still racking up nearly 4 failures per test and 17 advisories, indicating age-related wear is catching up fast. Before buying, get a full pre-purchase inspection and budget for imminent work on brakes, suspension, and exhaust—the typical problem areas for this generation.
The 2003 Mazda 323 has a below-average first-time pass rate (73.2% vs ~80% UK average) — check the specific vehicle's full MOT history carefully before buying.
These stats describe 6,103 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.
What tends to go wrong
Across 6,103 vehicles — figures show how many had each issue flagged at least once in their MOT history.
Data covers a 3-year window centred on 2003.
See this vehicle's full MOT history & AI hunches
Spot recurring advisories, hidden issues, and how it compares to 6,103 Mazda 323 cars.
Before you buy a 2003 Mazda 323
Based on MOT data from 6,103 vehicles — here's what to check.
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Check the full MOT history.
29.3% of these vehicles have had a dangerous defect recorded -
recurring advisories often signal problems years before they become failures.
Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle. -
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Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price.
Inspection
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Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically.
History
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Petrol (94%) | 5,759 | 73.4% | 3.92 |
| Diesel (6%) | 342 | 69.9% | 4.27 |
Colour Breakdown
Based on 92,513 Mazda 323 vehicles registered in the UK — across all years. From DVLA registration records.
Mileage Distribution
Most 2003 Mazda 323 vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 2003 Mazda 323 vehicles fall between 46,101 and 72,012 miles.
2003 Mazda 323 — Still on the Road
Numbers are thinning — 6% of 2003 Mazda 323s are still active.
Numbers are declining — 278 vehicles still getting MOTs in 2023 (6% of peak).
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2014–2023.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.
MOT History Averages
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Compare with another model
See how the 2003 Mazda 323 stacks up against a rival.