Some Analysis

My monthly bus pass is running out soon, so I wanted to check the math on driving versus taking the bus. The advantage of the bus is that I can read or nap on the way to and from work. It's also better for the environment than driving my own car. It's about a 15 minute bus trip and the bus comes every half an hour. I have a 5 minute walk from the bus stop to the office as well. Driving is clearly more stressful but I can leave whenever I want and don't have to walk to the bus stop. However, I can't say I trust the car I was given very much.

mileage (liters/100km)	9
price of gas per liter	$2,10
km per day	20
working days per month	21
cost of bus pass	$105,00
liters per km	0,09
price per km	$0,19
price per day	$3,78
price per month	$79,38
Savings by taking the bus	-$25,62

(all figures converted to Canadian dollars)

Wow, that was worse than I expected. I figured the bus would be cheaper than driving but would be offset by the inconvenience of not driving. However, the big factor missing here is the true cost of car ownership which should approximately triple my driving cost figures. On the other hand, the cost of car ownership to me is zero since I'm not paying insurance or maintenance on this car.