Gas prices in Connecticut: New England average and state gas tax
There's no official weekly average just for Connecticut. What there is: the New England regional average, which the state is part of, at $4.38 for regular this week (September 21, 2026). That's −9.6¢ versus the whole country. Taxes are a big part of the story: Connecticut's state gas tax and fees total 25.0¢ per gallon (37th of 51, highest first), and diesel carries 49.9¢. Since January 2015, the gasoline rate has moved ±0.0¢.
The quick take
Crossing a state line can change the tax you pay: next door to Connecticut, rates run from 24.2¢ in New York to 41.1¢ in Rhode Island.
Regular gas, weekly average · New England
September 30, 2024: $3.019 · September 21, 2026: $4.382 · min $2.784 · max $4.489
The state's gas tax since 2015
| Rate as of | Gasoline | Diesel |
|---|---|---|
| Jul 2026 | 25.0¢ | 49.9¢ |
| Jan 2026 | 25.0¢ | 48.9¢ |
| Jul 2025 | 25.0¢ | 48.9¢ |
| Jan 2025 | 25.0¢ | 52.4¢ |
| Jul 2024 | 25.0¢ | 49.2¢ |
| Jan 2024 | 25.0¢ | 49.2¢ |
| Jul 2023 | 25.0¢ | 49.2¢ |
| Jan 2023 | 5.0¢ | 42.9¢ |
| Jul 2022 | 0.0¢ | 42.9¢ |
| Jan 2022 | 25.0¢ | 40.1¢ |
| Jul 2021 | 25.0¢ | 40.1¢ |
| Jul 2020 | 25.0¢ | 44.6¢ |
| Jan 2020 | 25.0¢ | 46.5¢ |
| Jul 2019 | 25.0¢ | 46.5¢ |
| Jan 2019 | 25.0¢ | 43.9¢ |
| Jul 2018 | 25.0¢ | 43.9¢ |
| Jan 2018 | 25.0¢ | 41.7¢ |
| Jul 2017 | 25.0¢ | 41.7¢ |
| Jan 2017 | 25.0¢ | 41.7¢ |
| Jul 2016 | 25.0¢ | 41.7¢ |
| Jan 2016 | 25.0¢ | 50.3¢ |
| Jul 2015 | 25.0¢ | 50.3¢ |
| Jan 2015 | 25.0¢ | 54.5¢ |
Neighboring states
Massachusetts27.6¢New York24.2¢Rhode Island41.1¢
Map
Region: New England · Gas tax by state · Diesel prices · U.S. average