. . . . . .
I really love this car, but this is the third $1000+ repair I've had to do in the last year and a half. The car is only worth $4500-$6500 according to KBB. How much life can I expect out of it - can it reach 200,000 miles? At what point do I need to stop pouring money into it and sell it?
There is no set rule except "Eriks Law" (me) places a limit on repairs at 25% of purchase price. So a $30,000 auto gets $7500 in repairs and then I make a personal decision to keep it or get rid of it.
I do not count tires or oil servicing or insurance claims.
I replace front suspension parts at 100,000 miles. Struts, strut bushings, Strut Boots, tie rods, and alignment. Ball joints and control arms only if worn. Just my pet peeve because that is the mileage my nerves are shot from the rattles of worn parts that are typically the struts or strut bearings. I buy parts at Rock Auto and pay labor for installation including an alignment.
Front brakes and new rotors also at 100,000. I've never had a set wear out. Rear brakes seem to last forever. Same source for parts -- -- Rock Auto.
Battery and Alternators are driven to failure and you will probably go through a battery or two. Serpentine belts when it starts to show fraying or cracks.
I can do all of these maintenance actions for about $3000 being frugal about what I buy and how the labor is completed. I have a 2006 V6 and 2012 GT and these are exactly the same items I have replaced on both cars when they hit 100,000 miles. The V6 is 125,000 and the GT is 114,000.
In all honesty, if you have had 10 instances of costly repairs I would start questioning the need for the repairs. If the car is really that bad I would consider a private sale because trade-in value will not be anything to celebrate.