Percentiles – how to read a mileage distribution

A percentile tells you what share of cars have a lower mileage. If p25 for cars of the same model and age is 200,000 km, a quarter of them have covered less than 200,000 km.

  • p10 – 10% of cars have a lower mileage;
  • p25–p75 – the middle half of cars, the shaded band in charts;
  • p50 (median) – half of the cars are below, half above;
  • p90 – only 10% of cars have a higher mileage.

What does "expected mileage now" mean?

The median mileage of cars at their current age – for example Toyota Avensis 2008. When a model has too few readings, the mileage of the same class and fuel is used.

Does a mileage below p10 mean the odometer was rolled back?

Not necessarily. A low mileage can be genuine, but it is a reason to check the history. Try the is the mileage normal? calculator and read about odometer inconsistencies.