New scores will include data from property records, utilities and telecommunications firms.
Consumer data firm Equifax said auto loans made up about one-third of all consumer non-mortgage debt in the U.S.
Equifax reports auto loans at an all-time high at $975B in 2014.
Credit data firm will make scores available to those who sign up for credit tracking services.
A new service from Equifax allows credit unions to see what happened to auto loans they denied or otherwise failed to book.
Tool tracks applicants who did not receive credit union loans to find out where they financed.
Delinquencies at all-time low representing less than 1% of total outstanding balances.
A couple of key stats offer a glimpse of where credit unions may need to continue to look when targeting car shoppers.
Credit reporting agency credits lenders' risk assessment, portfolio management and credit availability for record numbers of auto loan originations.
Both numbers of cards and amounts charged are higher.