I keep seeing people on here considering buying $20,000+ cars, and they want the bigger engine option, but are afraid of how much the extra gas costs. Even if the smaller engine gets 10mpg more than the bigger engine, if you drive 1000 miles/month, you save about $25/month by buying the car with the smaller engine... Now, when you're spending $400/month or more on a car payment, and $100/month or more on insurance, why is this $25 such a significant burden to you? I don't get it. Anyone that can afford a big car with a powerful engine shouldn't have a problem paying for the gas for it.