I did this experiment a while back, but I'll redo for a good exercise.
All info from Honda Website
Honda Civic Sedan
$14,760
30/40
Honda Civic Hybrid Sedan
$22,150
49/51
Given:
250,000 miles
$3.00 per gallon
Car: Hybrid Sedan Sedan
Highway
Gallons used 4,902 6,250
$ on gas 14,706 18,750
Total cost of car 36,856 33,510
City
Gallons used 5,102 8,333.3
$ on gas 15,306 25,000
Total cost of car 37,456 39,760
Don't forget that this is if you run the car out to 250,000 miles.
If I screwed up the math, let me know.
Actual quote from the hone civic hybrid web page:
Hybrid owners are known for their smart thinking