<human>:  What would be the most economical car for a family of four?
<bot>: The most economical car for a family of four would likely be a mid-size sedan or SUV that offers plenty of passenger and cargo space along with great fuel economy. Models such as the Toyota Corolla, Honda Civic, Hyundai Elantra, or Kia Sportage are all good choices that offer excellent value for your money.