Group 1 Automotive, a Houston-based Fortune 500 auto retailer, reported record third-quarter earnings as the company posted annual gains in new and used vehicle sales in its three national markets.

Overall, Group 1 reported a net quarterly income of $ 46 million, up 15.7 percent compared to one year ago.

The company reported adjusted diluted earnings per share of $ 1.91, a quarterly record and up 21.7 percent from one year ago.

New vehicle retail sales increased 5.3 percent to $ 1.6 billion, and used vehicle retail sales increased 11.6 percent to $ 687.6 million.

Same-store, new vehicle sales increased 19.1 percent in the U.K., 4.4 percent in the U.S. and 1.3 percent in Brazil.