Inco - I think 1 is US and 4 is Canada but I could be wrong. I know our Solara is made in Canada and it's a 1. The Bullitt is a 4, correct of Dearborn. The RAV is a J, correct of Japan. Did a check on Camry's (for another post on here) on local Toyota shop lot recently and there was a mix of 1s for the US-built ones and Js for the Japanese built ones. I've never seen the 3 VIN, but that makes sense to be Mexico. Just curious.