* Country: Car ownership rates differ dramatically between countries. Developed nations with extensive highway systems and lower public transportation options will have higher averages than countries with more robust public transit.
* Household income: Higher-income households tend to own more vehicles.
* Household size: Larger households may need more cars to accommodate commuting and other needs.
* Urban vs. Rural: Rural areas often have higher car ownership rates due to less accessible public transportation.
* Time period: The average can fluctuate year to year based on economic conditions and changes in car affordability.
While you can find statistics on car ownership *rates* (percentage of households owning at least one car), finding data specifically on the *average number of cars bought per household* over a specific timeframe is difficult. Such data would require tracking individual household purchases over a period and is not consistently collected in many places.
To find a relevant statistic, you'd need to specify a country and time period and search for data from sources like national automotive associations or government statistical agencies.