How much does it cost me per day and per month to drive to work.
home_to_work = 5.4 miles (~8.7 km)
work_to_home = 5.8 miles (~9.3 km)
round_trip = home_to_work + work_to_home = 11.2 miles (18 km)
car_mpg = 14 mpg
gallons_per_trip = round_trip / car_mpg = 0.8 gallons
gallons_price = $3
gas_cost_per_trip = gallons_per_trip * gallons_price = $2.4
parking = $10.50 (after subsidies)
commute_per_day_by_car_cost = parking + gas_cost_per_trip = $12.9
commute_per_month_by_car_cost = commute_per_day_by_car_cost * 20 = $258
Parking is the dominant cost. My car mpg is terrible, however that barely makes a dent on the costs.