<prompt> Human: Ive got a 2002 Chevrolet Prizm re-badged Toyota Corolla with about 175,000 miles on it. Its got rust issues, burns oil, just dropped the muffler, and theres a pinhole leak in my fuel tank. I cant reasonably do anything about the rust issues or the oil burning worn piston rings. Theres also a rust spot on my driverside wheel well that could potentially wear through and it would not pass inspection without this being repaired 900. My inspection sticker is good through May 2017. Despite these issues, the car has been extremely reliable and Ive never had any problems with the engine or transmission. Its going to cost at least 500 to replace the fuel tank and it just cost 110 to get the muffler re-attached. This is probably the first time in at least 18 months its required any major repairs. I have more than enough money saved to fix the car or to replace it. I was hoping it would last until May because then I get a sizable bonus in company RSUs that I was hoping to use towards a down payment on a new car about 6750 worth at the current price. I also hit long-term capital gains on a sizable portion of company stock at the same time about 18,000 in gains at the current price. The company is very healthy and weve exceeded our numbers every quarter since weve gone public. What would you do in my financial situation? Is there a rule of thumb for determining when its more cost-effective to replace a car than repair an old one?EDIT: Just found another 2002 Chevrolt Prizm with 90,000 miles on CraigsList used auto dealer for 2600. Thoughts?EDIT 2: Im going to take a look at the used Prizm that I found on CraigsList. Thanks for all your input!  <response>: For me, when the car repairs average more than a car payment would be for a new car, over about a six-month time. Thats when Im generally done 