I assume both YTD numbers represent January 1 to June 30 of each year. I was a bit confused by the "foreign" and "domestic" distinction, but it seems to indicate location of manufacture. The order is kind of goofy too. Here's the ranking by June 2017 sales. Tesla is still among the boutique marques, but within striking distance of Volvo and Mitsubishi. Ford 227,166 Toyota 202,376 Chrysler 184,089 Nissan 143,328 Honda 139,793 Kia 56,143 Hyundai 54,507 Subaru 52,057 Mercedes 32,102 BMW 28,962 VW 27,377 Mazda 22,342 Audi 19,416 Mitsubishi 7,625 Volvo 7,303 Land Rover 5,760 Porsche 4,516 Mini 4,410 Tesla 3,900 Jaguar 2,946 Fiat 2,242 Maserati 1,235 Alfa Romeo 1,017 Smart 226 Ferrari 218 Bentley 218 Rolls Royce 111 Lamborghini 102 Maybach 0 GM 242,873