Gas prices decline significantly from last week. National retail fuel price averages Price Change from last week Regular gasoline/gallon $3.69 ↓ .06 Diesel fuel/gallon $4.15 ↓ .06 Regional regular gasoline prices Price Change from last week East Coast $3.63 ↓ .07 -New England $3.66 ↓ .07 -Central Atlantic $3.67 ↓ .06 -Lower Atlantic $3.60 ↓ .07 Midwest $3.69 ↓ .02 Gulf Coast $3.52 ↓ .08 Rocky Mountain $3.83 ↓ .05 West Coast $3.91 ↓ .07 -California $3.96 ↓ .08 Source: Energy Information Administration, 8/25/08 For more information on saving fuel see our reports on how to get the best gas mileage and where to find the cheapest gas.