Like much of the auto industry, some American dealership groups, both public and private, are going international.
New-vehicle sales for some publicly held companies on our list include sales at dealerships outside the United States.
Penske Automotive Group Inc., No. 2 on the list, and Group 1 Automotive Inc., No. 4, both had European dealerships last year.
Penske didn't break out international unit sales. But the company had announced that 2012 total revenues of almost $13.2 billion were split 64 percent U.S./36 percent international operations. Penske has dealerships in the United Kingdom, Germany and Italy.
Group 1 said its U.K. dealerships accounted for 6.2 percent of its 2012 new-vehicle unit sales, up from 5 percent in 2011. The rest of its sales were in the United States. Group 1 retailed 128,550 new vehicles in 2012, up 26 percent, so that implies the U.K. stores retailed 7,970 units in 2012, up from 5,101 in 2011.
This year, Group 1 purchased UAB Motors Participacoes, a group of 18 stores in Brazil.
Some private groups also own dealerships outside the United States and may or may not have included non-U.S. sales in their numbers. Here's what we know about three of them.
International sales were not included in our rankings of Greenway Automotive, of Orlando, and David Wilson Automotive Group, of Orange, Calif., both of which own dealerships in other countries.
McLarty Automotive Partners, which has non-U.S. stores, is a shareholder in RLJ McLarty Landers Automotive Holdings of Little Rock, Ark. The RLJ numbers on our ranking do not include the non-U.S. sales.