OP, if you are not convinced, I would advise you to draw up a spreadsheet of your cashflow and depreciation over the 6 years and think long about what you letting yourself in for. Actually, if you have any common sense, you would not have to think very long.
Let's do the basic maths on the back of a cigarette box:
On the assumptions of R125k cost, R35k deposit, 72 months, 11.25% interest, and 35% balloon payment, you will pay the bank a total of R143k. Add the R35k deposit you paid. Lets assume your insurance is R800p/m at 10% escalation, therefore your total premiums over the 6 years come to R74k. Thats a total paid of R252k over the 6 years for your installments and premiums.
Lets assume your depreciation is 15%, 12%,10%,8%,7%, 6% for each of the 6 years, by the end of the 6 years your precious little car will now be worth R52k.
So you have will a negative outflow of R200k!
On the other hand, you buy a R35k car and take third party only insurance of say R80p/m and take the same depreciation ratios as above. Your cost was R35k, plus R8k insurance and you will be sitting with an old car worth only R15k, but your total outflow would only have been R28k!
Of course there are many unforeseen events that might happen, you could write off your R35k car, it might not last 6 years, it will cost higher to maintain and repair than your new car, your friends might laugh behind your back. But you will have R170k to play with. Off course you will need the self discipline to invest monthly what you would have spend on your installment and premiums. At the end of the 6 years, you will be able to buy a much, much more more decent car and pay in cash for it.