5 Grand Prize Winners in the Mars and M&M's "When We Win You Win Sweepstakes" will win a 2013 Toyota Camry - Win A Car Contest. NOTE: After your first time entering, you'll need to enter where it says "Back Again?" and login with your email and password. INSTANT WIN SWEEPSTAKES GAME PRIZES: 650 FIRST PRIZES: Set of 2 M&M'S Racing 16 oz. Turvis Tumbler with Lid. ARV: $40. 500 SECOND PRIZES: $25 NASCAR.com SuperStore Gift Certificate. 250 THIRD PRIZES: M&M'S Brand Racing Backpack. ARV: $25. 1,000 FOURTH PRIZES: M&M'S Racing Earbud Headphones. ARV: $10.