Updated April 5, 2026 — Prices updated regularly from EIA data
$3.10
Average regular unleaded — Massachusetts
Today's Massachusetts Gas Prices
Gas prices in Massachusetts currently average $$3.10 per gallon for regular unleaded, below ($0.89) the national average of ${natAvg}. Prices across Massachusetts's cities and towns reflect the state's state fuel tax of 24 cents per gallon fuel tax and Northeast regional supply chain.
Many states require reformulated gasoline (RFG) or special summer blends to meet EPA air quality standards during warmer months. These blends reduce evaporative emissions but cost 5-15 cents more per gallon to produce.
Costco consistently offers the cheapest gas in any Massachusetts market where it operates — typically 15-20 cents below local street prices. Circle K, Speedway, and QuikTrip (where available) also routinely undercut the market average. Premium brands like Shell, Chevron, and BP typically price above the local average.
For a standard sedan with a 13-gallon tank, a fill-up in Massachusetts at today's $$3.10 average costs approximately ${fillCost}. A full-size truck or SUV with an 18-22 gallon tank runs ${truckFillLow} to ${truckFillHigh} to fill.
Gas price trends in Massachusetts follow national crude oil market movements combined with regional refinery and supply factors. Seasonal patterns typically see prices rise in spring (summer blend transition) and ease in fall and winter.
Four main factors drive Massachusetts gas prices: crude oil cost (50-60% of the price), state and federal fuel taxes (24 cents + 18.4 cents federal), refining and distribution costs, and retail station margins. Crude oil price swings cause the most dramatic short-term changes.
