BMW 1 Series 2004
Cars aged 21 · Data updated: 2026-11-09 (week 46) · source: VDA / Transeksta, CC BY 4.0
Pass the inspection first time
49.8% ±2.4 pp
M1 average at 21 years – 38.5%
n = 1,640 inspections
Expected mileage now (median)
303,439 km
Percentiles · cars aged 21
p10 216k
p25 273k
p50 303k
p75 339k
p90 374k
| km | |
|---|---|
| p10 | 216,178 km |
| p25 | 273,271 km |
| p50 | 303,439 km |
| p75 | 338,509 km |
| p90 | 374,297 km |
Inspection verdicts
1 Series 2004, n = 1,640
| % | |
|---|---|
| No defects | 20.1% |
| Minor defects | 29.8% |
| Major defects | 48.8% |
| Dangerous defects | 1.4% |
Odometer inconsistencies
0.4%
cars whose reading dropped between inspections
CO (petrol, idle)
0.10%
5.0% over the limit · n = 418
Smoke opacity (diesel)
0.43 m⁻¹
10.8% over the limit · n = 1,181
What these numbers say
49.8% of 2004 BMW 1 Series cars pass the technical inspection at the first attempt (n = 1,640), against an average of 38.5% for all 21-year-old M1 cars.
At 21 years old, a typical one now shows 303,439 km on the odometer; half of them read between 273,271 km and 338,509 km.
An odometer inconsistency was recorded for 2 cars, 0.4% of those assessed.
The median diesel smoke opacity is 0.43 m⁻¹; 10.8% of measurements exceed the limit.
Figures are not adjusted for how intensively cars are used. How we calculate