Gas prices continue to fall as the Iran ceasefire deal’s oil price benefit works through the crude-to-retail pipeline. Average US gas prices are approximately $0.15-0.20 per gallon below their pre-deal Hormuz-closure highs, with the decline accelerating into Week 2 as wholesale markets more fully reflect the crude oil price reduction. ONYX’s August 7 projection anticipated $0.28-0.38 per gallon total reduction reaching the pump around August 25-28. The Week-2 data suggests the decline is tracking on or slightly ahead of that projection, consistent with the earlier-than-expected Week-1 movement reported on August 12.
THE MATH SO FAR
Tracking the price decline from the deal’s signing:
▸ August 7 (deal signed): Brent crude falls ~$9/barrel
▸ August 12 (Week 1): gas prices at pump already -$0.08; ahead of ONYX projection
▸ August 15 (start of Week 2): approximately -$0.15-0.20 from Hormuz-closure highs
▸ August 25-28 (projection): -$0.28-0.38 total reduction reaching most American drivers
▸ Labor Day (September 1): peak political visibility window for the price reduction
WHY WEEK 2 IS ACCELERATING
The Week-2 acceleration reflects the specific dynamics of the crude-to-retail pipeline: Week 1’s price reduction was from refineries that already had lower-cost crude in their pipeline from before the deal. Week 2 represents refineries that received crude purchased after the deal — at the lower post-deal crude price — and are passing those savings through to wholesale and retail. The pipeline is catching up with the crude price change.
Additionally, Lloyd’s war-risk premium reductions (formally declining since Day 4) are reducing insurance costs for Gulf shipping, which reduces the delivered cost of crude to US refineries. This adds a secondary downward pressure on retail prices beyond the crude oil spot price itself.
THE POLITICAL TIMELINE
Labor Day (September 1) is 17 days away. The deal’s positive oil price effect is on track to produce visible pump price reductions well before that date. The political visibility of a gas price reduction that reaches its full extent before the traditional start of fall campaign season is the specific dynamic ONYX has been tracking since August 7.
The caveat: the October 6 Day-60 cliff. If the deal lapses without extension on October 6, oil prices will partially reverse and gas prices will rise again — in the peak campaign season, 29 days before midterms. The price reduction narrative depends on the deal holding and being extended beyond October 6. That extension depends on the nuclear dialogue producing progress. That dialogue had its first session yesterday.
The gas prices are falling because the deal is holding. The deal is holding because the nuclear dialogue just had its first session. Everything is connected.
| CONFIDENCE: HIGH | Week-2 gas price figures (-$0.15-0.20) are from available market data and AAA tracking. Week-1 figure (-$0.08) is from ONYX August 12 coverage. Projection (-$0.28-0.38 by August 25-28) is from ONYX August 7 analysis. Pipeline mechanism analysis is from established petroleum economics. |
SOURCES
▸ AAA / GasBuddy — Week 2 gas price tracking, August 2026
▸ ONYX August 7 — crude-to-pump projection methodology
▸ ONYX August 12 — Week 1 -$0.08 figure
