• GasBuddy's national gasoline average reached $4.25/gallon, up 17.2 cents on the week and $1.14 on the year, with every state posting an increase, per data cited by Rigzone on September 16.
• Diesel also rose in every state over the same week, per GasBuddy's Patrick De Haan — but neither GasBuddy nor the cited Rigzone report published a specific national diesel average, so no diesel figure or record claim can be verified from this source set.
• Michigan (+32.1 cents), Utah (+29.2 cents) and Wisconsin (+29.1 cents) saw the steepest weekly increases; prices ranged from $3.58 in Indiana to $5.95 in California, per GasBuddy data via Rigzone.
• The proximate driver is Gulf crude flow, not US refining capacity: Saudi Arabia's East-West pipeline — rated at up to 7 million bpd but already running near 2 million bpd in August, below its typical 4-5 million bpd — has been offline since a drone attack CNBC first reported on September 11.
• Pipeline repair timing is reported, not confirmed: Reuters sourcing cited by Al Jazeera put restoration at five to six weeks, while the US Energy Secretary told CNBC he expects a shorter, days-long interruption.

Gasoline prices rose in every one of the 50 US states this week, GasBuddy data cited by Rigzone show, with the national average reaching $4.25 a gallon. Diesel rose too, in every state, according to GasBuddy's Patrick De Haan — though neither GasBuddy nor Rigzone published a specific national diesel figure in this report, so no diesel price or record claim is confirmed here. What is verifiable is the mechanism: Saudi Arabia's East-West pipeline has been offline since a drone attack CNBC first reported on September 11, and Brent crude has traded above $107 a barrel, with no confirmed restart date for the line.

What's confirmed at the pump

GasBuddy's national average stood at $4.25 a gallon, up 17.2 cents on the week, 19.0 cents on the month, and $1.14 on the year, per data cited by Rigzone on September 16. The steepest state-level moves were in Michigan (+32.1 cents), Utah (+29.2 cents) and Wisconsin (+29.1 cents), while prices ranged from $3.58 in Indiana to $5.95 in California. GasBuddy's Patrick De Haan said average gasoline and diesel prices rose in every state 'as geopolitical tensions escalated on multiple fronts, with friction between the U.S. and Iran, new hostilities in the Red Sea, and the shutdown of Saudi Arabia's East-West pipeline all combining to jolt prices sharply higher.'

The Gulf chokepoint behind the spike

Saudi Arabia shut its East-West pipeline after a drone attack CNBC first reported on September 11; Al Jazeera's later account of the same episode does not give an identical date, an inconsistency this desk cannot resolve from the two reports alone. The line is rated at up to 7 million barrels a day, per Al Jazeera, but was already running below that before the shutdown — roughly 4 to 5 million bpd — and had fallen to about 2 million bpd in August, its lowest since January. Brent crude traded near $107.63 a barrel and WTI near $102.48, both the highest since May 19, as markets priced a seventh month of US-Iran confrontation, per CNBC.

What's reported, not confirmed

How long the pipeline stays shut is genuinely unsettled. US Energy Secretary Chris Wright told CNBC he expects only a brief, days-long interruption. Reuters sourcing cited separately by Al Jazeera put actual repairs at five to six weeks, with one source suggesting operations could restart sooner. Saudi Arabia's state oil company has not published a restart date or confirmed the extent of damage. Until it does, both timelines are estimates from officials and unnamed sourcing, not verified facts, and should be read that way.

What to watch next

Two signals matter more than the daily pump-price headline: whether Saudi Arabia or its state oil company issues an official East-West restart date, and whether Strait of Hormuz shipping activity — tracked independently via tanker and AIS data — shows renewed disruption beyond the pipeline itself. Al Jazeera also reports intensified Houthi attacks around the Red Sea and Bab al-Mandeb, a general threat to the kingdom's Red Sea export route that this report cannot make more specific without further confirmation. This is analysis of confirmed and reported market conditions, not a trading call.