<prompt> Human: My sister just parked her newly leased Mercedes C300 in our driveway, and I feel queasy thinking about it.She put 2800 down, and will be paying 300 a month for 4 years. Maintenance is included, but she will have to pay for tires, and oil changes. The thing that makes me feel bad is, after 4 years, she will have spent over 17,000 to pay for a car which is not hers she doesnt want to buy the car afterward.What Im thinking is, shes at the age when she needs to start saving for a home the bay area is not cheap!. She is 27, makes 50,000 a year, lives at home, and spends money like shes got an established money tree.Was it a good decision to lease this car, only to be carless in 4 years and down without 17,000?  <response>: Im surprised its a 4 year lease and not 3. 300 a month is a good deal if thats a 50k C class, but that doesnt mean it was a good idea in her situation. 