I have 3 cars.. My daily driver is an 03 crown vic ‘sport package’ if you can believe such a thing exists.. but it does.. My weekend car is 07 infinity g35. It actually get’s right at 20 in mixed mode driving.. And, the beast I need to sell, an 89 BMW 750il.. It has a 5 liter 12 cylinder.. it does about 11 mpg, but 18 on the highway..
I drive very little.. a tank of gas lasts about a month, sometimes longer.. in any of my cars (I don’t think I’ve put gas in the bimmer in 3 months).. Because I drive so little, I don’t worry about mileage all that much..