Should I buy my car at the end of the lease?

Compare the buyout price (residual plus any fees) with what similar cars sell for. If the market value is higher, buying could be a good financial move or you might sell it for the equity. Buying also avoids mileage and wear charges. If the car is worth less than the buyout and you're within limits, returning it may make more sense. Also consider the car's reliability and your needs.