Chart 7. Gross-profit growth of major business segments as a percentage of total gross-profit growth, 2007–19
Business segment Percent

New vehicles


Used vehicles


Parts, labor, and service


Finance and insurance


Note: The category of "other" was omitted because it was trivial. Percentages do not add up to 100 because of rounding.

Source: Authors' calculations using U.S. Securities and Exchange Commission data (