premier 4dMyMagnum 4D app is your access to becoming an M Premium member! Get exclusive benefits and privilege by verifying your account. • Magnum Life Grand Prize Winner Bonus RewardA 2020 Chevrolet Bolt EV Premier Hatchback 4D has depreciated $14,420 or 52% in the last 3 years and has a current resale value of $12,872 and trade-in value of $11,469.