I just inherited a 2005 Prius with only 23,500 miles. I am trying to decide whether to sell it or keep it. mid blue book is around 15k. We don't really need the money and investment return on that amount would not be much over the next 3 years. 3 years is when my son turns 16 and will need a car. We have 3 other cars but the one he would get already has over 100,000 miles on it. I am trying to balance the cost of insurance with the savings on gas and the loss of resale value against having a reliable low mileage car in 3 years when my son needs it. Any opinions would be welcome.