The Car Market Share is calculated by dividing the total number of cars sold by a given company by all of the cars sold through out the world
This metric is used exclusively in the Auto Industry to judge the relative size of a company. A company with a high percentage share of the car market means that a large portion of all cars sold in the world come from a given company. This is important in judging certain aspects like a company's control over the market, consumer demand, and the company's overall market exposure.
Example
- If there are 500M cars sold in the world and Tata Motors (TTM) sells 50M its share of the car market is 10% or 50M/500M.