Mazda 6 (2005)
2005 Mazda 6
CarHunch analysed 14,263 real MOT records for the 2005 Mazda 6. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 2005 Mazda 6 falls short of the UK average with a 74.1% first-time pass rate, and that gap widens when you consider that 27.1% of these cars have recorded dangerous defects at some point—a significantly high proportion that should concern buyers. Petrol and diesel variants perform almost identically (74.2% and 73.7% respectively), so fuel choice won't be a reliability differentiator here.
At 19 years old, the median mileage of 73,564 is reasonable, yet these cars are racking up an average of 3.67 failures and 16.7 advisories per test, pointing to accelerating wear rather than one-off faults. Before buying, insist on a full service history and a pre-purchase inspection focusing on suspension, braking, and emissions systems—the high advisory count suggests these are the trouble spots on ageing examples.
What to check before buying a 2005 Mazda 6
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.
- ⚠️ 27.1% 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 6
MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.
CarHunch may earn a small commission if you buy via these links — at no extra cost to you.
Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Petrol (74%) | 10,607 | 74.2% | 3.86 |
| Diesel (26%) | 3,638 | 73.7% | 3.13 |
| LPG (0%) | 17 | 77% | 2.76 |
| Other (0%) | 1 | 57.1% | 3 |
Mileage Distribution
Most 2005 Mazda 6 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 2005 Mazda 6 vehicles fall between 59,617 and 89,588 miles.
2005 Mazda 6 — Still on the Road
Numbers are declining — 754 vehicles still getting MOTs in 2024 (6% of peak).
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2014–2024.
MOT History Averages
Most Common MOT Issues — 2005 Mazda 6
Based on actual MOT test records for this model. Percentage shows how often each item appears across all vehicles in this cohort.
-
68.2%
Nearside Front Tyre worn close to the legal limit
-
62.6%
Offside Front Tyre worn close to the legal limit
-
60.3%
Nearside Rear Tyre worn close to the legal limit
-
55.3%
Rear Brake pad(s) wearing thin
-
51.7%
Offside Rear Tyre worn close to the legal limit
-
36.8%
Front Brake pad(s) wearing thin
-
35%
Under-trays fitted obscuring some underside components
-
31.5%
Child seat fitted not allowing full inspection of adult belt
Data covers a 3-year window centred on 2005. Counts include advisories and failures.
Found a specific Mazda 6?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.