Having owned mine 7 years and still loving it, I think the zed is holding its value very well, unlike the RX8 I owned previously which I lost 12k in the 2.5 years I owned it. Now that's depreciation ! . So in seven years Id say I've only lost about 10k on the Zed. I wouldn't worry about depreciation Id be more worried about contracting zeditis ! As I've spent more on the car than it's worth in the last year alone haha.