JM refers to Japan, Mazda
1- Designates vehicle type.
1 is for cars, 2 is for trucks, & 3 for MPVs etc.
NA is the model ID: NA=Miata, UF=B-2200, SD=MX-6, FC=RX7, etc.
351 is the model type (352 for Miatas of some markets)
2 is a check digit
L is model year:
L=90, M=91, N=92, P=93, etc.O is not used to avoid confusion
The 0 is the plant number.(0 for Hiroshima,1 for Hofu)
The 100014 is the car number.
The leading digit is the year number.
The second digit resets to 0 every year.
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