If only Ford dealers had sold 221,648 F-Series pickups instead of a measly 221,647. Or Jeep sold two Patriots — a vehicle it killed nearly four years ago — instead of just one.
Or Tesla played by the same rules as virtually everyone else in the industry and reported its U.S. sales instead of just a global total each quarter.
In the absence of that data, we have to estimate. It's not the only brand we do that for: McLaren, Ferrari, Rolls-Royce and a few others don't provide exact numbers, either.
But Tesla has become a much bigger player than any of those. Not having precise, U.S.-only numbers for Tesla, especially as it expands in Europe and China, creates much more murkiness than making a well-informed guess that Lamborghini logged 405 sales last quarter.
Year to date, Tesla has outsold BMW and Lexus. (We think.)