fact is, it happens with most car brands, some worse than others. Also, if you try and trade a car in, in less than 2 years of ownership you gona feel it. Keep in mind that you have hardly paid back most of the principal debt, as most of the money goes towards interest, new or 2nd hand.
If you buy new, you loose a crap load of money the minute yo udrive off the floor, and it will go at about 15% per year.
A car starts depreciating a little less after 3 years.
Buy 2nd hand, older than 3 years and you will still feel the loss in value, although a little less, keep in mind that you then have an older car, and might be close or out of maintenance plans and if you dont have the know-how, its gona cost you. After motorplan you will get about R2.50 for it.
Best in my opinion is to go 1 or 2 year old cars, with low mileage, and you score on extra's. Then keep it at least two to three years.
moral of the story is, cars is not an asset but a liability, you going to loose money, no matter what route you take.