Gas in Massachusetts averaged $2.73 in 2018 — $3.50 in today’s money
Average, that year
$2.73
In 2025 dollars
$3.50
The average price of a gallon of regular gasoline in Massachusetts across 2018, shown both as it was at the pump and adjusted for inflation to constant 2025 dollars (CPI-U).
Across the year
How Massachusetts prices moved through 2018
Weekly average for regular gasoline. The year’s high was $2.96 the week of May 28, 2018; the low was $2.48 the week of December 31, 2018 — a swing of 19.2%.
View the weekly data (53 weeks)
| Week of | Nominal | 2025 $ |
|---|---|---|
| January 1, 2018 | $2.52 | $3.26 |
| January 8, 2018 | $2.55 | $3.30 |
| January 15, 2018 | $2.53 | $3.27 |
| January 22, 2018 | $2.54 | $3.28 |
| January 29, 2018 | $2.56 | $3.32 |
| February 5, 2018 | $2.60 | $3.35 |
| February 12, 2018 | $2.62 | $3.38 |
| February 19, 2018 | $2.58 | $3.33 |
| February 26, 2018 | $2.55 | $3.30 |
| March 5, 2018 | $2.54 | $3.27 |
| March 12, 2018 | $2.53 | $3.27 |
| March 19, 2018 | $2.53 | $3.27 |
| March 26, 2018 | $2.55 | $3.29 |
| April 2, 2018 | $2.61 | $3.36 |
| April 9, 2018 | $2.61 | $3.36 |
| April 16, 2018 | $2.66 | $3.43 |
| April 23, 2018 | $2.73 | $3.51 |
| April 30, 2018 | $2.76 | $3.56 |
| May 7, 2018 | $2.79 | $3.58 |
| May 14, 2018 | $2.83 | $3.64 |
| May 21, 2018 | $2.91 | $3.73 |
| May 28, 2018 | $2.96 | $3.80 |
| June 4, 2018 | $2.95 | $3.79 |
| June 11, 2018 | $2.91 | $3.73 |
| June 18, 2018 | $2.88 | $3.70 |
| June 25, 2018 | $2.87 | $3.68 |
| July 2, 2018 | $2.88 | $3.68 |
| July 9, 2018 | $2.88 | $3.69 |
| July 16, 2018 | $2.88 | $3.70 |
| July 23, 2018 | $2.88 | $3.68 |
| July 30, 2018 | $2.88 | $3.69 |
| August 6, 2018 | $2.88 | $3.68 |
| August 13, 2018 | $2.88 | $3.68 |
| August 20, 2018 | $2.86 | $3.66 |
| August 27, 2018 | $2.84 | $3.64 |
| September 3, 2018 | $2.84 | $3.63 |
| September 10, 2018 | $2.85 | $3.63 |
| September 17, 2018 | $2.85 | $3.63 |
| September 24, 2018 | $2.83 | $3.62 |
| October 1, 2018 | $2.84 | $3.62 |
| October 8, 2018 | $2.85 | $3.63 |
| October 15, 2018 | $2.82 | $3.60 |
| October 22, 2018 | $2.82 | $3.60 |
| October 29, 2018 | $2.80 | $3.57 |
| November 5, 2018 | $2.78 | $3.55 |
| November 12, 2018 | $2.73 | $3.48 |
| November 19, 2018 | $2.69 | $3.43 |
| November 26, 2018 | $2.67 | $3.40 |
| December 3, 2018 | $2.63 | $3.35 |
| December 10, 2018 | $2.61 | $3.32 |
| December 17, 2018 | $2.56 | $3.27 |
| December 24, 2018 | $2.53 | $3.22 |
| December 31, 2018 | $2.48 | $3.16 |
Year over year
How 2018 compares, adjusted for inflation
2018 was Massachusetts’s 12th-most-expensive year for gas on record, adjusted for inflation — equivalently, the 13th-cheapest of 24 years (2003–2026).
Every grade
Massachusetts fuel prices by grade in 2018
Year-average price per grade. Premium figures are the spread drivers paid for higher-octane fuel that year.
| Grade | Avg / gal | 2025 $ | vs. regular |
|---|---|---|---|
| Regular | $2.73 | $3.50 | — |
| Midgrade | $3.00 | $3.85 | +26.9¢ |
| Premium | $3.19 | $4.09 | +46.2¢ |
Common questions
Massachusetts gas prices in 2018, answered
- What was the average price of gas in Massachusetts in 2018?
- The average price of regular gasoline in Massachusetts in 2018 was $2.73 per gallon — about $3.50 in 2025 dollars after adjusting for inflation, according to U.S. Energy Information Administration weekly data.
- How high did gas prices get in Massachusetts during 2018?
- Massachusetts's weekly average for regular gasoline peaked at $2.96 the week of May 28, 2018 and bottomed out at $2.48 the week of December 31, 2018 — a swing of 19.2% across the year.
- Were gas prices in Massachusetts higher in 2018 than in 2017?
- Adjusted for inflation, regular gasoline in Massachusetts was more expensive in 2018 than in 2017, up 11.0% year over year.
- How does 2018 rank for gas prices in Massachusetts history?
- Adjusted for inflation, 2018 was the 12th-most-expensive year for regular gasoline in Massachusetts out of the 24 years EIA has published weekly prices (2003–2026).