2B -
How much gas? Generally 5-6 gallons would be a good guesstimate - will vary by manufacturer and model year.
MPG? 40-50 mpg would again be a reasonable expectation.
Make sure you allocate some money for insurance - probably $75-150 per year depending on insurance company and coverage. Allow for the cost of on-going maintenance - oil changes, air filters, spark plug, annual check-up (if you choose to do so), etc. It would also make sense to set aside some money for future potential repairs/wear-and-tear items (battery, tires, etc.).
Bill
