Exhibit 99.1 Investor Contact: Derek Fiebig (954) 769-2227 fiebigd@autonation.com Media Contact: Lisa Rhodes Ryans (954) 769-4120 publicrelations@autonation.com AutoNation Reports First Quarter 2024 Results • Q1 2024 EPS $4.49, compared to $6.07 a year ago • Q1 2024 Revenue $6.5 billion, compared to $6.4 billion a year ago • Q1 2024 After-Sales gross profit increased 9% from a year ago to a record $556 million • Year-to-date through April 24, 2024, repurchased 1.6 million shares of common stock • Board of D ...