Opel Signum 2004
Cars aged 21 · Data updated: 2026-11-09 (week 46) · source: VDA / Transeksta, CC BY 4.0
Pass the inspection first time
41.2% ±1.3 pp
M1 average at 21 years – 38.5%
n = 5,626 inspections
Expected mileage now (median)
305,967 km
Percentiles · cars aged 21
p10 224k
p25 263k
p50 306k
p75 336k
p90 381k
| km | |
|---|---|
| p10 | 223,522 km |
| p25 | 263,051 km |
| p50 | 305,967 km |
| p75 | 336,283 km |
| p90 | 380,930 km |
Inspection verdicts
Signum 2004, n = 5,626
| % | |
|---|---|
| No defects | 18.0% |
| Minor defects | 23.2% |
| Major defects | 56.3% |
| Dangerous defects | 2.5% |
Odometer inconsistencies
2.1%
cars whose reading dropped between inspections
CO (petrol, idle)
0.20%
13.9% over the limit · n = 584
Smoke opacity (diesel)
0.70 m⁻¹
23.5% over the limit · n = 4,760
What these numbers say
41.2% of 2004 Opel Signum cars pass the technical inspection at the first attempt (n = 5,626), against an average of 38.5% for all 21-year-old M1 cars.
At 21 years old, a typical one now shows 305,967 km on the odometer; half of them read between 263,051 km and 336,283 km.
An odometer inconsistency was recorded for 30 cars, 2.1% of those assessed.
The median diesel smoke opacity is 0.70 m⁻¹; 23.5% of measurements exceed the limit.
Figures are not adjusted for how intensively cars are used. How we calculate