Hmmm...lessee...83,000 miles would be about 3500 km per year. $40/mo = $480/yr...divide by km driven...yup, aint that good. Works out to 13.7 cents per km...my Sonic has averaged 6.8c/km over the last 113,000+ km... I also spend $40 a month on gas...and then some.
Reminds me of the story my salesman friend told me of a guy wanting to trade his truck in for a Focus. Gas prices were rising, and damn, with his truck using so much fuel he needed to get out of it and into a more efficient car. He hummed and hawed, and my friend finally asked him how much did he drive? It too was a low number, and so he figured it out for the guy - based on mfg ratings, he would've saved about $350 per year. Huh. Guess he can keep the truck after all.
Some people don't bother with the big numbers. Or even the little ones.