Looks like we have some new stuff coming in the Model X VINs, so building on the Tesla Wiki VIN decoder for the X, with a sample size of 1.5 (someone else posted their 2 different VINs for identical Sigs but one with 6 and the other with 7 seats):
Digits 1-3: 5YJ = Tesla WMI
Digit 4: Line/Series (S/X, I'll assume Model III will be "E"
Digit 5: Body Type (my X VIN is "C" here, as opposed to "A" for the Model S 5 door hatchback.)
Digit 6: This seems to be seat arrangement on the X (A=7 seats, B=6 seats, ?C=5 seats?)
Digit 7: Unclear, no match to what's shown in the Wiki, my P90D has an "E" here.
Digit 8: The dual motor S has a "2" here, my dual motor Ludicrous has a "4" here. Any Ludicrous S owners out there with info on digit 8, or anyone with a non-ludicrous X who have their VIN assigned want to contribute here?)
Digit 9: Check digit?
Digit 10: Model year, F=2015, the X probably starts at G=2016, mine is a "G"
Digit 11: Manufacture location: F=Fremont, anyone know the european location code?
Digit 12: Production series (A, B, R, S=Signature, F=Founders, Production has a 0-9 digit here as the first of 6 digits in the production sequence to allow for 999,999 cars
Digit 13-17: Production sequence last 5 digits.
Peter+
Digits 1-3: 5YJ = Tesla WMI
Digit 4: Line/Series (S/X, I'll assume Model III will be "E"
Digit 5: Body Type (my X VIN is "C" here, as opposed to "A" for the Model S 5 door hatchback.)
Digit 6: This seems to be seat arrangement on the X (A=7 seats, B=6 seats, ?C=5 seats?)
Digit 7: Unclear, no match to what's shown in the Wiki, my P90D has an "E" here.
Digit 8: The dual motor S has a "2" here, my dual motor Ludicrous has a "4" here. Any Ludicrous S owners out there with info on digit 8, or anyone with a non-ludicrous X who have their VIN assigned want to contribute here?)
Digit 9: Check digit?
Digit 10: Model year, F=2015, the X probably starts at G=2016, mine is a "G"
Digit 11: Manufacture location: F=Fremont, anyone know the european location code?
Digit 12: Production series (A, B, R, S=Signature, F=Founders, Production has a 0-9 digit here as the first of 6 digits in the production sequence to allow for 999,999 cars
Digit 13-17: Production sequence last 5 digits.
Peter+