Diesel Prices in Connecticut Today
EIA doesn't publish a weekly diesel price for Connecticut alone. This is the average for the New England region, which includes Connecticut. Pump prices in Connecticut can be higher or lower.
New England average diesel price (includes Connecticut)
$6.349per gallon
−$0.067 vs last week+$0.147 vs 8 weeks ago
Week of November 9, 2026. Source: U.S. EIA, all taxes included.
That is +$0.222 a gallon compared with the U.S. average of $6.127.
At this price, 10,000 miles a month at 6.5 mpg costs about $9,768 in diesel.
Compared with other regions
| Region | Price / gal | vs Connecticut |
|---|---|---|
| Lower Atlantic | $5.694 | −$0.655 |
| Gulf Coast | $5.741 | −$0.608 |
| Midwest | $6.201 | −$0.148 |
| Rocky Mountain | $6.206 | −$0.143 |
| Central Atlantic | $6.412 | +$0.063 |
| West Coast (except California) | $6.429 | +$0.080 |
| California | $7.897 | +$1.548 |
Other New England states
Spend less on diesel
- Plan fill-ups for the cheaper regions on your route. This week the cheapest and most expensive regions are $2.203 a gallon apart.
- Use a fuel card with discounts at the truck stop chains you pass most. Compare the discount with the card’s fees.
- Watch idle time and speed: both burn fuel without moving freight.
- Know your real cost per mile, so a cheap-looking load that burns expensive fuel doesn’t lose money.
Diesel price questions
Where do these diesel prices come from?
From the U.S. Energy Information Administration (EIA) weekly survey of retail on-highway diesel prices. EIA collects prices every Monday and usually publishes them Monday afternoon (Tuesday after a federal holiday). The prices include all taxes.
Does EIA publish a diesel price for every state?
No. EIA publishes weekly diesel prices for the U.S., for regions of the country and for California only. For other states we show the average of the EIA region the state belongs to. Prices at individual truck stops can be higher or lower.
Why is diesel cheaper in some parts of the country?
Mostly because of state fuel taxes and the cost of getting fuel to the area. The Gulf Coast, close to many refineries, is usually among the cheapest regions. California is usually the most expensive because of higher taxes and its own fuel rules.
Does buying diesel in a low-tax state lower my fuel tax?
Not overall. Under IFTA you owe fuel tax to each state for the miles you drove there, and the tax you paid at the pump is credited on your quarterly return. Buying where the price before tax is lower saves money; buying only to dodge tax is mostly evened out on the IFTA return.