I know that automobile dealers operate a specific credit measure to lease/finance a car, though we forgot that one. we hold it is possibly Trans Union or Experian. we know that automobile dealers operate a single measure even if this measure is a lowest of all. Does any a single know that credit score, Trans Union or Experian, automobile dealers operate to lease/finance a car? Thanks.

they probably pull all three Trans union, experian, and Equafax.
Dealers can have accts w/ either one of them. They have passwords & codes to let them log on just as you would with any acct. If they have a specific lender, then they would go thru them & use their links. If it’s a manufacturers lease, then they would go thru them also.
Different lenders have different policies. Some may use just one (like us) , some may use all 3. We generally select the highest FICO score to use
You might want to check out this website regarding your credit score (and getting a free report):
http://www.squidoo.com/how-to-protect-my-credit-score