Before diving into the list, it is essential to understand why fuel efficiency matters:Cost Savings: Spending less on gas means more money in your pocket for other expenses.Environmental Impact: Reduced fuel consumption lowers greenhouse gas emissions.Convenience: Fewer trips to the gas station save time and hassle.Resale Value: Fuel-efficient cars often have higher resale values.To evaluate a vehicle’s fuel efficiency, you can use a fuel mileage calculator to compare your current car with potential options.