This is a business law question

Kenny, aged 17 years, 11 months, buys a used car on credit from Cars R Us The contract also includes a service agreement obligating the seller to perform certain maintenance on the car for one year, Kenny makes five monthly payments in the five months after he turns 18. In addition, he has the seller service the car on four separate occasions. After making the fifth payment Kenny announces to Cars R Us that he wants to disaffiemie return the car and get back the full price. Will he be able to do so