If you drive an average of 15,000 miles per year, a 50 mpg vehicle will save you about $450 annually over a 35 mpg vehicle (assuming gas averages $3.50/gallon). That’s just under $38 per month.
429 gallons @ 35mpg = 15000 miles
300 gallons @ 50mpg = 15000 miles
gallons saved 129 @ $3.50/gallon = 451.50
If you drive an average of 12,000 miles per year, a 50 mpg vehicle will save you about $360 annually over a 35 mpg vehicle. That’s about $30 per month.
343 gallons @ 35mpg = 12000 miles
240 gallons @ 50mpg = 12000 miles
gallons saved 103 @ $3.50/gallon = 360.50