Based on estimates from Vietnam's fuel wholesalers, the newspaper Thanh Nien reported on September 9 that the biofuel gasolines E10 and E5 are each expected to rise by about 1,400 dong per liter (đồng/lít) in the price adjustment set for the following day, September 10. Diesel is also expected to climb by roughly 700 dong. For residents who ride motorbikes or drive cars daily in Hanoi or Ho Chi Minh City, fuel sits at the center of transport costs, so understanding the reasons behind the hike makes it easier to respond at the next adjustment.
E10 and E5 forecast to rise about 1,400 dong in the September 10 adjustment
Thanh Nien's article was published on the morning of September 9. It reports fuel wholesalers' estimates that in the September 10 adjustment, both E10 and E5 gasoline will rise by about 1,400 dong, and diesel by about 700 dong. In Vietnam, fuel prices are, as a rule, revised at 3 p.m. on adjustment days, with the new prices taking effect at gas stations nationwide from that time. This adjustment will follow the same process.
The breakdown of the forecast, and why it isn't yet a "final figure"
This estimate is only the wholesalers' forecast, and the article itself notes that it doesn't factor in changes to the Price Stabilization Fund (Quỹ bình ổn) or same-day shifts in product market conditions. Drawing down the fund could shrink the increase, while adding to it could push the pump price up more than forecast. The final figures are announced by the authorities at the time of the adjustment. What readers need to take away are the two key points: "about 1,400 dong for E10" and "about 700 dong for diesel," with the changeover happening "at 3 p.m." Treating these as enough information to estimate fuel costs is more practical than chasing precision down to the last digit.
Crude oil returning to a six-week high underpins the forecast
Behind the price-hike forecast is a rebound in international crude oil. According to the article, benchmark Brent crude futures rose to $97.92 a barrel (up 0.9% from the previous day), while U.S. WTI also topped $93 (up 1.7%). That level marks a return to roughly a six-week high.
How international prices feed into Vietnam's pump prices
Vietnam's retail fuel prices are revised based on a base price reflecting import and refining costs, averaged over international market rates across a set period. Because a large share of domestic consumption is met through imports and domestic refining, a rise in international crude and product prices eventually flows through to pump prices with a time lag. This forecast increase, too, has less to do with a single day's move than with crude staying at elevated levels.
How to read price moves since the shift to E10
Vietnam has been pushing ahead with the shift to E10 biofuel gasoline, and as this outlet previously reported onthe September 4 adjustment, when E10 hit a record high, today's September 10 adjustment falls exactly one week later. September 4 and 10 are separate adjustment rounds, and both point to further increases, but conflating the two risks leaving only the impression of "one big jump." As long as crude stays elevated, it helps to think of E10 as a price tag that moves by a few hundred to over a thousand dong with each adjustment, rather than reacting to every move.
Increase by fuel type: gasoline rising roughly twice as much as diesel
The forecast change for each fuel type in the September 10 adjustment is as follows. All figures are wholesaler estimates and don't reflect changes to the stabilization fund.
| Fuel type | Forecast change (September 10 adjustment) | Direction |
|---|---|---|
| Gasoline E10 | About +1,400 dong/L | Increase |
| Gasoline E5 RON92 | About +1,400 dong/L | Increase |
| Diesel | About +700 dong/L | Increase |
A distinctive feature of this round is that the increase for the two gasoline grades is roughly twice that of diesel. Motorbike and car users who run on gasoline will feel the difference before and after the adjustment more than diesel users.
How much does a 1,400 dong hike add to a single fill-up?
If E10 rises by 1,400 dong per liter as forecast, how much does that change per fill-up? A simple calculation by fill-up volume shows the scale of the impact.
Estimated price difference by fill-up volume
- Motorbike (4-5L fill-up): about 5,600-7,000 dong difference
- Small car, partial fill-up (20L): about 28,000 dong difference
- Near-full tank (40L): about 56,000 dong difference
- Larger tank (50L): about 70,000 dong difference
For a single motorbike, the difference is small, but for delivery riders and rideshare drivers who fill up daily, or small businesses running several company vehicles, it adds up over time. Even a move of a few hundred to over a thousand dong per liter pushes up the monthly fuel bill more for those who drive longer distances.
Knowing the adjustment cycle lets you plan around it
Vietnam's fuel adjustments run on a fixed weekly cycle, as a rule, taking effect at 3 p.m. Forecast articles tend to come out from the day before the adjustment through the morning of the day itself. You can fill up before an adjustment expected to raise prices, and after one expected to lower them, but the savings are capped at the price difference for a single tank. The fill-up volume itself doesn't change, so it's best kept as a rough guide for staying calm rather than something to over-rely on.
Fuel, gas, and fees all rising in the same month
Resident households in September 2026 face rising costs beyond fuel as well. For those who cook at home, this outlet's coverage ofthe household gas price hike starting in Septemberis hitting kitchens directly, with both fuel and gas rising in the same month. On top of that, when it comes to bank accounts,bank fees being revived and newly introduced one after anotherare being deducted, in small amounts, every month.
Managing these "small hikes" together
Gasoline, gas, and fees each rise only a little on their own, but stacked in the same month they add up to a real increase in living costs. There's a step to take for each: adjust fill-up timing to the adjustment cycle for fuel, review usage for gas, and switch to free notification or free transfer settings for fees. Rather than treating each hike as a separate news item, checking your fixed costs all at once at the start of the month catches more of what would otherwise slip through.
Living with fuel costs while crude stays elevated
The September 10 fuel adjustment is forecast to raise E10 and E5 gasoline by about 1,400 dong and diesel by about 700 dong, against a backdrop of crude oil back at a six-week high. The figures are wholesaler forecasts, and the final numbers will be set by the authorities, but as long as crude stays elevated, upward pressure is likely to persist. Readers have two concrete options. One is to check fuel, gas, and fees together at the start of the month and set up money-saving settings just once. The other is to use the adjustment cycle and crude oil levels as a guide for shifting fill-up timing within a reasonable range. Rather than reacting to each day's news, making it a habit to review fixed costs monthly makes it easier to respond quickly.
