$47k plus your car?
Just showing trade difference really hides how much they are giving you for your car and how much they are charging for theirs. What does Edmunds or KBB say your car is worth on trade with an honest assessment of condition?
Not knowing all the options on the car also makes this very hard to assess.
tldr - Need to know price of car, trade amount, kbb value of trade, options on car
2011 E92 M3, 2008 Evo X MR, 2008 S2000 CR