For your info I got 68% for my 2.25 year old mint ISF (mk.2) which betters the German equivalents that loose significant cash due to the Factory Options that hold almost zero value.
If you read the long-term tests over months, not years, Audi & Bmw trade-ins plummet!
A senior Bmw guy told me Not to spec "my" then 335i to Lexus Stds as I would loose a packet as the retained value of Bm's was based on metallic,auto ,leather,18".
Tel