I save roughly $120 a month in just gas costs alone. Most, if not all, of my short-distance trips to grocery store, library, school, etc. are done on my bike now. I'm putting waaay fewer tough, stop-and-go miles on my car so I feel like I'm saving a ton in car maintenance/repairs.
It's hard to quantify but I know it'll add it up to significant savings. For example, I used to change my car's oil four times a year but that's been cut down to only once per year. Other regular maintenance items such as filters, fluids, brakes, tires, suspension that I would replace annually or every two years are changed much less frequently now.
Also saving quite a bit in parking costs. No more carrying spare change for meters or stalking for parking spaces.
Last edited by SophannPhin; 09-11-08 at 11:40 PM.