Depreciation is tricky, because as a buyer, you factor in taxes and everything else, sellers are different.
For example, the GT in Canada, with remote start and the tech package with Taxes is roughly $38-42k depending on your province. I priced mine out at $42k with taxes in Saskatchewan and that included the HomeNet, remote start, plastic protection package and the tech upgrade, plus 10% tax (5% GST and 5% PST).
GS with Nav and Remote Start is roughly $35-37k with taxes, depending on province, but my quote came to $38k with Nav/Plastic/Homenet and Remote Start.
Good luck selling that a year later for anything more than $28k for the GT or $25k for the GS. That is a $10-14k hit and roughly 30% depreciation in the first year, probably more and the main reason I am trying to hold off buying one, even though I would keep it for 8-10 years and it wouldn't matter much.
I want one, but if I can get a GS next year with less than 30k km on it for $22-25k, I would do it. That would save me about $12-15k.
I saw a "used" one sell here the other day. Grey GS with 1000km on it that sold for $28500 plus tax. Same one at the Mazda dealer with 17km was $32000 plus tax. Now, how did O'Brians have it for 1000km and not be at a Dealership, I don't know...but that is a significant savings amount.
I don't mind buying used personally, but you are always going to get "screwed" if you sell your car immediately after buying it new IMO.
Another example is a 2011 Tucson with 40k on it. They bought it 2 years ago for $42k with tax and no navigation and are trying to sell it today for $27000 "asking", which means it will sell for $25k if they are lucky. (No tax needed as it was used).
I also looked at a 2012 Mitsubishi RVR SE with 27k on it. Dealership price was $24k (plus GST and PST as it was an out of province inport). You could of picked it up for $25k taxes in, but that is about $12k savings from brand new in 1 year.