Interesting question. Forced me to google this lol. Found this article from Nov 11
http://www.carsguide.com.au/news-and..._your_next_car
Based on it i plugged some estimated number to get to what they think the value is after 3-5 years and extrapolate (very back of the envelope) and basically the difference between the high depreciating cars (large cars) and low deprecating cars (sports cars) is about $6k after 5 years using a 40k gts as my base (10k - 16k).
Realistically once the dust settles the rate will be somewhere in between those 2.
Obviously depends on how long you plan on holding onto the car. After 8-9 years we're looking at a difference of 3-4k.
Obviously there is a big difference in the early years.