If somebody told you to always put N95 petrol in a rented motorbike in Vietnam, that advice was correct for years — and then it quietly stopped being true. On 1 June 2026 the fuel behind the label changed nationwide. The pumps still say 95. What comes out of them does not.

№ 01What happened to N95 petrol on 1 June 2026

Vietnam has been working towards biofuel for more than a decade, mostly without much success — E5 RON 92 was introduced years ago and most riders ignored it, filling up with mineral RON 95 instead. Decision 46/2025/QĐ-TTg ended that choice. From 1 June 2026, production plants, distributors and every retail outlet in the country had to convert, and mineral RON 95 stopped being blended at all.

So the phrase N95 petrol has not disappeared — the octane rating is identical, the pump nozzle is the same one, and Vietnamese riders still say chín lăm (“ninety-five”) when they pull in. What changed is the recipe. You are now buying 90% mineral petrol and 10% ethanol, sold under the label E10 RON 95.

The roadmap does not stop there. E5 RON 92 stays on sale in parallel until the end of 2030, specifically so that older engines have somewhere to go. From 1 January 2031, Vietnam intends to move to higher blends again — E15 or another ratio, to be set by the Ministry of Industry and Trade closer to the date.

№ 02The two fuels at a Vietnamese pump today

Every public petrol station in Vietnam now sells the same short menu, and N95 petrol is only one line on it. Read the board before you point at anything.

The word to burn into your memory is the difference between xăng (petrol) and dầu (diesel). Vietnamese stations put the diesel pump on the same island as the petrol pumps, often with a black nozzle sitting right next to the green one. Attendants fill your tank for you, so this is rarely a problem — but if you ever serve yourself at a quiet rural station, that one word matters more than knowing anything else about N95 petrol.

№ 03Is E10 N95 petrol safe for your rented bike?

For anything you are likely to rent in Hoi An: yes, and there is nothing to think about. The Ministry of Industry and Trade has been consistent that E5 and E10 do not damage engines, and ethanol actually raises the octane rating rather than lowering it. Rental fleets here are modern fuel-injected Hondas and Yamahas — Vision, Air Blade, Janus, PCX, XSR — machines designed to run on E10-grade N95 petrol in every other market they are sold in.

The genuine caveat is about age, not about the fuel being bad. Ethanol absorbs moisture from the air and is harder on the older generation of rubber seals, fuel lines and carburettor parts. Bikes built in the 1990s and early 2000s, especially carburettor models, are the ones Vietnamese mechanics advise to stay on E5 RON 92 — which is precisely why that grade was kept on sale until 2030. If you have somehow rented a 1998 Honda Cub from a homestay, ask the owner which one they use. For everything else, E10 is the correct N95 petrol.

• Fuel economy barely moves. Ethanol carries about 3% less energy per litre than mineral petrol, so a 10% blend costs you roughly 1–2% more fuel. On a 5-litre scooter tank that is a couple of kilometres of range. You will not feel it.
• Do not mix grades out of caution. Half a tank of E5 topped up with E10 will not hurt anything, but there is no benefit either. Pick one and stay with it.
• Long standing time is the real enemy. Ethanol blends do not like sitting in a tank for months. That is a problem for a bike stored over winter, not for a rental that gets ridden every single day.
• If the bike runs rough, it is not the fuel. A modern engine hesitating on E10 N95 petrol almost always means a dirty air filter or old spark plug. Tell the rental shop and swap the bike.

№ 04What N95 petrol costs and how far a tank goes

One wrinkle nobody warns you about: there are two E10 grades. Most pumps sell E10 RON 95-III, the standard grade and the price quoted throughout this guide. A few stations also offer E10 RON 95-V, a cleaner-burning grade to a stricter emissions standard, which on 21 August 2026 cost 24,060₫ per litre in zone 1 — roughly 1,400₫ more. On a rented scooter it makes no practical difference. If the nozzle you are handed says 95-V and the meter climbs faster than you expected, that is why, not a scam.

Vietnam sets a ceiling retail price that is revised on a regular cycle, so the number on the board moves week to week. As of the adjustment in force on 21 August 2026:

Zone 2 prices for N95 petrol — remote areas far from the ports and depots — run slightly higher, but nowhere around Hoi An is zone 2. The difference between the two grades is under 900₫ a litre, which works out to less than 5,000₫ on a full tank. Choosing E5 to save money is not a strategy; choose it only if the bike genuinely calls for it.

A typical automatic scooter returns somewhere around 40–45 km per litre in Vietnamese traffic, which puts a full tank near 200 km. To put that in context for a Hoi An trip:

№ 05How to refuel, step by step

Buying N95 petrol in Vietnam is a full-service affair. You will not touch a nozzle, tap a card reader or pre-pay. Here is the whole ritual.

1. Pull in slowly and stop with the engine off. Keep both feet down and stay on the bike — you do not need to dismount, and dismounting into a busy forecourt is how people get clipped. Riding in with the engine running is technically against the rules at every station in Vietnam and staff will wave at you until you switch off.
2. Wait for the attendant to come to you. There is always one, usually in a blue or orange uniform. They open the fuel cap, which on most scooters is under the seat or behind a flap in the footwell.
3. Check the meter reads zero before they start. Both numbers — litres and đồng — should be at 0.000. This is the single habit worth building. Say “số về không chưa?” or just point at the display. An honest attendant resets it without being asked; the rare dishonest one is counting on you not looking.
4. Say what you want. Either an amount of money (năm mươi nghìn — fifty thousand) or a full tank (đầy bình). Point at the 95 on the N95 petrol pump if there is any doubt. Holding up a 50,000₫ note works everywhere.
5. Watch the counter while it fills. Not out of suspicion — it takes ten seconds and it tells you exactly what you are paying.
6. Pay. Cash is simplest and always accepted. Almost every station now also has a QR code for bank transfer, which is useless to you unless you hold a Vietnamese bank account. Have notes smaller than 500,000₫.
7. Glance at the fuel gauge before you ride off. Ten seconds, and it settles any question later about what you actually got.

№ 06The Vietnamese you actually need

Six words cover every N95 petrol stop you will ever make. Rough pronunciation in brackets — nobody expects the tones to be right, and pointing works fine.

№ 07Where to fill up around Hoi An

Two chains dominate and both are reliable: Petrolimex, with the orange and blue P, and PVOil in yellow. Anything carrying one of those signs is metered, regulated and selling genuine N95 petrol at the posted price.

• Search Google Maps for “cây xăng”, not “petrol station”. The Vietnamese term returns three or four times as many results, including the small independents that never bothered with an English listing. This one trick solves the problem permanently.
• There are no pumps inside the Old Town. The historic core is pedestrianised in the evenings and there is nowhere to fill up in it. The stations sit out on the ring roads — on the Cua Dai road heading to the beach, and on the routes north towards Da Nang.
• Fill before a long ride, not during it. Heading for Deo Le, My Son or the far side of the Hai Van Pass, stations thin out fast once you leave the coastal strip. Top up in town where it is cheapest and easiest.
• The roadside bottle sellers are a last resort. You will see hand-lettered XĂNG signs outside houses with petrol in old water bottles. They charge well above pump price, the grade is whatever they poured in, and there is no meter. Fine when you have misjudged the tank on a village road. Not a plan.
• Ask what the tank holds at pickup. Vietnamese rental shops hand the bike over with whatever fuel is in it and expect nothing back — there is no full-to-full policy here. Just look at the gauge before you ride away so you know what you started with.

№ 08Mistakes tourists make with N95 petrol

None of these are expensive mistakes. They are just the small frictions that turn a two-minute stop for N95 petrol into an awkward one, and they are all avoidable.

• Hunting for a pump labelled plain RON 95. It no longer exists. If a station board reads E10 RON 95, that is the N95 petrol you came for — not a cheaper substitute someone is fobbing you off with.
• Refusing E10 because a 2019 blog post said to. Most English-language advice about Vietnamese fuel predates June 2026 and tells you to avoid ethanol blends. That advice is now impossible to follow, because ethanol-free N95 petrol does not exist at the pump.
• Not watching the meter reset. The overwhelming majority of attendants are straight. Looking costs nothing and removes the only real way to be short-changed.
• Paying with a 500,000₫ note for a 50,000₫ fill. Small stations genuinely run short of change in the morning. Keep 20s, 50s and 100s.
• Setting off for the beach at night on a quarter tank. The An Bang and Cua Dai roads have long unlit stretches and the stations out there close earlier than you would expect. Running dry at 10pm on a dark coastal road is the one fuel mistake that is actually dangerous.
• Assuming an electric bike solves it. It does — no fuel stops at all — but check the charge before a beach run the same way you would check a fuel gauge.

№ 09Questions we get asked at the shop

Once the fuel question is sorted, the riding is the easy part — the run out to An Bang Beach costs less in petrol than a coffee, and the Marble Mountains are a half-tank round trip. If you would rather have someone else worry about the logistics for a day, there are guided tours and day trips from Hoi An that include transport.

Updated August 2026. The ethanol blending requirement follows Decision 46/2025/QĐ-TTg, effective 1 June 2026, with E5 RON 92 remaining on sale until 31 December 2030. Retail prices quoted are the zone 1 ceiling prices in force on 21 August 2026 and change on a regular adjustment cycle — check the board at the station. Fuel consumption figures for N95 petrol are typical for automatic scooters in local traffic and will vary with the bike, the load and how you ride. Disclosure: the tour link above is an affiliate link. If you book through it we may earn a small commission at no extra cost to you, and it does not change what we recommend.