Co-signing a loan drop my credit score and affect future loans?

One of my friends asked me to co-sign the loan car and I wonder if it will drop my credit score.
My current score is 730, with no history of previous loans or bad debts. Also, if I decide to go ahead and sign the cooperation that is for me a loan for me in the future?

You can use this service credit monitoring in the future pre-estimate scores for different scenarios of such payments.

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