BMW 6 Series (2005)
2005 BMW 6 Series
CarHunch analysed 183 real MOT records for the 2005 BMW 6 Series. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 2005 BMW 6 Series passes its first MOT attempt 82.7% of the time, marginally above the UK average of 80%, but the serious red flag here is that 35% of these cars have recorded a dangerous defect at some point—nearly double the typical rate. This suggests electrical, brake, or structural issues are endemic to the model, and any prospective buyer should factor in potentially expensive repairs.
These 6 Series have covered a typical 74,500 miles for their age, yet they're racking up an average of 2.92 failures and a concerning 14.1 advisories per test. The high advisory count points to wear in trim, suspension, and ancillary systems that, while not immediate failures, signal upcoming costs; before purchasing, get an independent specialist inspection focused on the cooling system, electrical harnesses, and suspension components, which are known weak points on this generation.
What to check before buying a 2005 BMW 6 Series
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.
- ⚠️ 35% 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 BMW 6 Series
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 (98%) | 179 | 82.6% | 2.96 |
| Diesel (2%) | 3 | 86.9% | 1.67 |
| Other (1%) | 1 | 100% | 0 |
Mileage Distribution
Most 2005 BMW 6 Series 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 BMW 6 Series vehicles fall between 45,802 and 93,603 miles.
2005 BMW 6 Series — Still on the Road
Numbers are declining — 59 vehicles still getting MOTs in 2025 (48% of peak).
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2014–2025.
MOT History Averages
Found a specific BMW 6 Series?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.