This is the formula for calculating the USA check digit, the ninth position in the Ferrari Vehicle Identification Number.
The check digit of the VIN appears in the 9th position and provides a way to verify the validity of all of the other characters in positions 1-8 and 10-17. The check digit is calculated by carrying out the following mathematical computation.A = 1 | G = 7 | N = 5 | V = 5 |
B = 2 | H = 8 | P = 7 | W = 6 |
C = 3 | J = 1 | R = 9 | X = 7 |
D = 4 | K = 2 | S = 2 | Y = 8 |
E = 5 | L = 3 | T = 3 | Z = 9 |
F = 6 | M = 4 | U = 4 |
VIN position | Weight factor | VIN position | Weight factor |
1st | 8 | 10th | 9 |
2nd | 7 | 11th | 8 |
3rd | 6 | 12th | 7 |
4th | 5 | 13th | 6 |
5th | 4 | 14th | 5 |
6th | 3 | 15th | 4 |
7th | 2 | 16th | 3 |
8th | 10 | 17th | 2 |
9th | to be calculated |
See also the MSExcel file "VINCheckDigit.xls" for an easy calculation of the check digit.