Audi A4 SE TDI (2005)
2005 Audi A4 SE TDI
CarHunch analysed 1,116 real MOT records for the 2005 Audi A4 SE TDI.
Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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This 2005 A4 SE TDI is a genuinely unreliable proposition: only 43.8% pass their MOT first time, nearly half the UK average of 80%, with diesel variants performing identically poorly at 43.7%. The good news is that dangerous defects are absent from the dataset, so failures tend to be fixable rather than safety-critical.
At 164,000 miles median mileage, these are well-worn cars, and the 0.69 average failures per vehicle reflects serious wear across the fleet—likely suspension, emissions systems, and electrical gremlins common to high-mileage VAG diesel engines. If you're considering one, budget for immediate remedial work post-purchase and factor in that you'll probably face another MOT attempt or two before it settles; a pre-purchase inspection by a diesel-savvy specialist is essential.
The 2005 Audi A4 SE TDI passes its MOT first time at roughly the UK average rate (75.6%) — solid but worth checking this vehicle's history carefully.
These stats describe 1,116 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.
See this vehicle's full MOT history & AI hunches
Spot recurring advisories, hidden issues, and how it compares to 1,116 Audi A4 SE TDI cars.
Before you buy a 2005 Audi A4 SE TDI
Based on MOT data from 1,116 vehicles — here's what to check.
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Check the full MOT history.
0% 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 |
|---|---|---|---|
| Diesel (99%) | 1,109 | 75.7% | 0.68 |
Colour Breakdown
Based on 2,626 Audi A4 SE TDI vehicles registered in the UK — across all years. From DVLA registration records.
Mileage Distribution
Most 2005 Audi A4 SE TDI 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 2005 Audi A4 SE TDI vehicles fall between 144,761 and 186,277 miles.
2005 Audi A4 SE TDI — Still on the Road
Numbers are thinning — 16% of 2005 Audi A4 SE TDIs are still active.
Numbers are declining — 92 vehicles still getting MOTs in 2025 (16% of peak).
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2017–2025.
* 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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