That is a really good deal.
Based on the current inventory in my area.. $1,600 is the default discount and then some for miles over 1,600 (Only best guess). There are 6 Brand New M3 P models in the Los Angeles Area.. some of them are so tempting.
2020 M3 SR+, Red, White, 19" Sport + FSD: $48,860 (1,610 miles) ---New with same config is $50,490: Difference of $1,630
2020 M3 LR, Red, Black, 18" Aero + FSD: $55,390 (905 miles) --- New with same config is $56,990: Difference of $1,600
2020 M3 LR, Red, Black, 19" Sport + FSD: $56,610 (1,393 miles) --- New with same config is $58,490: Difference of $1,880
2020 M3 P, Black, White, 19" Sport + NO FSD: $56,990 (<50 miles) --- New with same config is $56,990