Seeing that you are not in the US, your rules for car buying may be much different than here in the states. Big price swings are usually more doable on new vehicles when the dealer is close to hitting their bonus money from the manufacturer at the end of the month. They may be willing to take a bit of a loss in order to trigger a $xx,xxx bonus for moving X number of this model that month. So buying new may actually make more sense than buying a 1 year old model, so long as you hit the timing right. This would really only be true for high residual value vehicles, like many Toyotas and Jeep Wranglers. Again, this may be very different where you are. If you want to own a vehicle that has a high drop in residual, by all means...go after a 1-3 year old one.

When leasing, you are making a wager that the vehicle will depreciate more in X years than the sum of your payments. When you buy outright, you are wagering the vehicle will depreciate less than what you have into it during the same time. This is only applies when you don't keep vehicles long term.