any money you put into a car is not worth the money, you buy a new car and as soon as you take it off the lot you lose 10 to 20%, you cant sell it for the same price you bought it for, so in your thinking that means its not worth the money. add the loan rate, higher ins, monthly car pymnts, it cost alot to have a car, but still cheaper to keep an older used car .
but if the car is in good shape and you kept up w/repairs it is worth the money. if its falling apart, rusting, neglecting maintance and repairs its probably not worth it to fix the tranny unless you can swap one in yourself. any used car he buys has the potantial to brekdown as soon as he drives it, so money for buying it and then more money to fix it. if a car is paid for and in good shape (and you like the car), it could be worth the money to fix, and he gets a one year guarantee that the tranny will work, probably and most likely longer than that. thats my 2 cents
