It ticks me off when with all of your tuning of a car, and you sell it for the 25% of the base price of the car. I hated that in GT2, and pretty much do the same with GT3. GT4 will need to improve. Otherwise, what good is it to sell your tuned sweetheart for its base price? It's the same thing if someone sold a 1999 Mitsubishi Eclipse tuned with a trick muffler, cool stereo system, usually flamboyant rear wing, and in a nice candy color... but can only be sold for the base price of the original car. I mean, you'd be wanting to kick yourself, then scream like you was at the Teen Choice Awards... just, in anger.
I agree with you, my friend. If you have a 25K Cr car and tuned it for 175K Cr, you should be able to get at least 25% of the car, plus tuning. In this example, you'd get 50,000 Cr back from selling your car. But unless if PD thinks that selling your car for 25% of its base price without tuning is a way to avoid cheating of some kind, then I think now is the time to implement 25%, or hell... 50% of the price of your car plus tuning! The PC game "Sports Car GT" had you selling your car for 50% of all the tuning for your car and maybe the car itself as well, so why not GT4? Respectful and reasonable resale values need some real consideration, people.