We have two cars: my husband’s car that gets 30 miles per gallon and my minivan that gets 20 miles per gallon. Our kids’ three car seats live in the van most of the time, but to save money we move them into the car on Saturday nights in preparation for Sunday morning when we drive just over 20 miles to get to church (remember how we live in the boonies?).
Van: 40 miles @ 20 mpg = 2 gallons of gas @ $4/gallon = $8.00 roundtrip to church
Car: 40 miles @ 30 mpg = 1.3 gallons of gas @ $4/gallon =$5.20 roundtrip to church
We save $2.80 each Sunday by taking his car, which doesn’t seem like much, but after 52 weeks, we save $145. We actually save much more than this because when we have family outings on Saturday (or any time we’re all going together as a family), we do the car seat swap then, so we are saving gas on all our weekend travels.
When we have another child, this arrangement won’t work anymore, so we are taking full advantage of saving money (you know, to go toward our big fat goal) by squeezing into the more fuel efficient vehicle while we can.
Does fuel efficiency affect which car you drive away in?