There are tons pf websites that offers coupons, deals and discounts. But, I follow few of them that saves me money
Fat Wallet and RetailMeNot is my favorites. When I see Promo Code or Coupon Code at Checkout, I head straight to Retail Me Not, then I search in google for Coupons. If you are planning to buy a new car, Fat Wallet is the best source on how to find great deal.