SDCL § 32-6D-4: Allowance for use of vehicle offset against monetary recovery.

Refunds shall be made to the consumer and any lien holders, as their interests may appear. There shall be offset against any monetary recovery of the consumer a reasonable allowance for the consumer's use of the vehicle. A reasonable allowance for use is that amount directly attributable to use by the consumer before his first report of the nonconformity to the manufacturer or authorized dealer and shall be calculated by multiplying the full purchase price of the motor vehicle by a fraction having as its denominator one hundred thousand and having as its numerator the number of miles that the vehicle traveled before the first report of nonconformity.