Fuel Types in Europe: Refuel a Rental Car Without Mistakes

Open the fuel filler flap of your rental car and look at the sticker inside it. It shows a symbol: a circle means petrol, a square means diesel. Match that symbol to the same label on the pump nozzle and you cannot go wrong. For almost every petrol rental car in Europe, E10 (the circle with "E10" inside) is the safe, standard choice.

That is the whole trick. The rest of this guide explains why it works everywhere from Portugal to Poland, what the fuels are called in each country, how paying at European pumps actually works with an international card, and exactly what to do if you ever put the wrong fuel in.

What do the EU fuel labels mean? E5, E10, B7 and friends

Since 12 October 2018, every fuel pump in the EU has carried the same harmonised labels under Directive 2014/94/EU and standard EN 16942. Three shapes cover everything, as CEN-CENELEC explains:

Shape	Fuel family	Labels you'll see	Meaning of the number
Circle	Petrol	E5, E10, E85	Max % of ethanol (bio-component)
Square	Diesel	B7, B10, XTL	Max % of biodiesel (XTL = synthetic)
Diamond	Gaseous	LPG, CNG, LNG, H2	Fuel type, not a percentage

The same labels appear in three places: on the pump, on the nozzle, and inside the fuel filler flap of newer cars, according to the EU fuel identifiers campaign. So the check takes five seconds: flap symbol, nozzle symbol, match.

Is E10 safe for a rental car?

Yes, in practice always. Petrol cars built after roughly 2011 are almost universally E10-compatible, per the ACEA compatibility list, and rental fleets are far newer than that. E5 (usually sold as 98-octane "Super Plus") also works in any petrol car; it simply costs more. For diesel rentals, B7 is the standard everywhere.

Petrol or diesel? How to know what your rental takes

Never guess from the car model. The same hatchback exists in petrol and diesel versions, and European rental fleets carry more diesels than most visitors expect. Check, in this order:

The sticker inside the fuel filler flap. The EU label (circle or square) is printed there on newer cars.
The key fob or key tag. Many rental companies attach a "DIESEL" or "PETROL/BENZIN" tag.
The rental agreement or the app. Fuel type is normally listed with the vehicle details.
Ask at the pickup desk. Thirty seconds at the counter beats an afternoon waiting for a fuel-drain van.

If you book through Easy Escape, the fuel type of your specific car is confirmed in your companion app before you land, alongside the rental voucher, so this is one desk question you can skip. It sits well with the same checklist we cover in our International Driving Permit guide.

What is each fuel called in each country?

The EU labels are universal, but the big text on the pump is local. This table decodes the names you will actually see:

Country	Petrol 95 (E10)	Premium petrol (E5/98)	Diesel (B7)
France	SP95-E10	SP98	Gazole
Germany	Super E10	Super Plus	Diesel
Italy	Benzina	Benzina 98/100	Gasolio
Spain	Gasolina 95	Gasolina 98	Gasóleo A
Portugal	Gasolina 95	Gasolina 98	Gasóleo
Austria	Super 95	Super Plus	Diesel
Netherlands	Euro 95 (E10)	Superplus 98	Diesel

One trap deserves its own warning. In Italy, gasolio is diesel. In Spain, gasolina is petrol. Two nearly identical words, opposite fuels. If your Tuscany rental takes petrol, you want benzina, never gasolio. When in doubt, ignore the word and trust the circle or square symbol.

How does paying work at European fuel stations?

There are three systems, and knowing which one you are standing at avoids most confusion:

Fill first, pay inside. The norm in Germany and Austria. Fill up, note your pump number, pay at the counter.
Pay at pump, card only. Standard at French supermarket stations (Leclerc, Carrefour, Intermarché) and at unmanned 24/7 stations across Europe. Insert card, authorise, fill.
Attended service. Common in Spain and Portugal, and optional in Italy, where "servito" (attended) lanes charge EUR 0.15 to 0.25 per litre more than "fai da te" (self-service), which is EUR 7.50 to 12.50 extra on a 50-litre fill, according to italien.news. Pull into the self-service lane unless you want to pay for the company.

Why did the pump charge me EUR 100?

It didn't, quite. Pay-at-pump machines place a temporary pre-authorisation hold on your card before you fill, commonly around EUR 100 in Italy and EUR 120 to 150 in France, as travellers regularly report on forums and as AARP explains for holds in general. The hold is replaced by the real amount, but the release can take up to 72 hours depending on your card issuer. Expect it, and do not treat it as an overcharge.

For travellers from India, the UAE and the wider Gulf: Visa and Mastercard work fine, but unmanned pumps often require chip-and-PIN and may reject cards without it. RuPay is generally not accepted. Carry one chip-and-PIN Visa or Mastercard credit card as your fuel card, and keep some capacity free for those holds.

How much does fuel cost in Europe in July 2026?

The EU-27 average in the week of 6 July 2026 is EUR 1.724 per litre for petrol and EUR 1.701 for diesel, per the European Commission Weekly Oil Bulletin (figures via fuel-prices.eu). Petrol is up about 11.2% on July 2025. Country by country:

Country	Petrol EUR/L	Diesel EUR/L
Spain	1.518	1.535
Croatia	1.593	1.648
Austria	1.686	1.730
Italy	1.810	1.887
Portugal	1.898	1.795
France	1.921	1.863
Greece	1.950	1.753
Germany	2.058	1.928
Netherlands	2.203	2.021

Source: EC Weekly Oil Bulletin, 6 July 2026. Switzerland is outside the bulletin; budget roughly EUR 1.75 to 1.85 per litre equivalent for a Swiss Alps route.

The EU spread is enormous: Sweden's petrol at EUR 1.329 versus Denmark's at EUR 2.325 means the same 50-litre tank can differ by about EUR 50 depending on where you fill.

Where should you fill up cheaply?

Where you fill matters as much as which country. In France, autoroute stations charge EUR 0.15 to 0.30 per litre more than supermarket stations, per ChannelHop and FrenchEntree. The price ladder, cheapest first: supermarket station, ordinary town-brand station, motorway station, and in Italy the servito lane on top of that. Filling at a hypermarket before joining the motorway is one of the easiest savings on a budget road trip.

Also note that diesel is cheaper than petrol in France, Portugal and Greece but dearer in Italy, Austria and Spain, so a diesel car is not automatically the frugal choice on every route.

What if you put the wrong fuel in? The 5-step protocol

Around 150,000 drivers misfuel each year in the UK alone, according to a figure cited by Fuelfixer. The classic direction is petrol into a diesel car, because the slim petrol nozzle fits the wider diesel filler neck; the reverse rarely fits. If it happens to you:

When you realise	What to do	Likely cost
Before starting the engine	Do not turn the key, not even to ignition. Push the car clear, call the rental company	A tank drain, roughly EUR 200 to 400
After starting or driving	Pull over safely, switch off immediately, do not restart	Fuel-system flush or component damage, potentially thousands

The full protocol:

Stop filling the moment you notice.
Do not start the engine or turn the ignition. This is the single rule that separates a cheap fix from a wrecked fuel system, as AutoSlash stresses.
Tell the station staff and get the car pushed away from the pump.
Call the rental company's assistance line before arranging anything yourself.
Know who pays: you. Rental firms treat misfuelling as negligence, and standard collision damage waivers do not cover it, per Rhinocarhire. Some third-party excess policies sell misfuelling cover; check yours before the trip. It belongs on the same avoid-list as the errors in our guide to expensive driving mistakes in Europe.

Renting an EV? Charging is simpler than it used to be

If your rental is electric, two connectors cover Europe: Type 2 for standard AC charging and CCS Combo 2 for DC fast charging, the EU-mandated standards under AFIR. Better still, since 13 April 2024, EU Regulation 2023/1804 requires every new public DC charger of 50 kW or more to accept ad-hoc contactless debit or credit card payment, with no app or subscription, and price transparency rules have applied since 14 April 2025, as Virta and KEBA explain. Ask at pickup whether the car comes with a charging card for older networks, but on new fast chargers your contactless Visa or Mastercard is enough.

FAQ

What is the difference between E5 and E10, and which should I choose?

The number is the maximum ethanol percentage: E5 holds up to 5%, E10 up to 10%. E10 is the standard 95-octane fuel and the cheaper of the two; E5 is normally the premium 98-octane grade. Any modern rental petrol car runs happily on E10, so pick it unless the filler flap says otherwise.

What happens if I put petrol in a diesel rental car?

If you have not started the engine, the fix is a tank drain, typically a few hundred euros. If you start or drive the car, petrol strips the lubrication diesel components rely on and the bill can run into thousands. Either way the rental company will bill you, because standard damage waivers exclude misfuelling as negligence.

Do European fuel pumps accept Indian or UAE cards?

Visa and Mastercard issued anywhere generally work. The two friction points are unmanned pay-at-pump machines that insist on chip-and-PIN, and pre-authorisation holds of commonly EUR 100 to 150 that briefly reduce your available balance. RuPay is generally not accepted. Bring one chip-and-PIN Visa or Mastercard and you are covered.

Should I return the car full or buy the rental company's fuel package?

Return it full. Full-to-full is almost always cheaper because prepaid fuel packages charge for a complete tank whether you use it or not, usually at an inflated per-litre rate. Fill at a supermarket or town station within a few kilometres of the drop-off point and keep the receipt.

Are fuel stations open at night and on Sundays?

Staffed stations often close evenings and Sundays, especially in rural France, Spain and Italy. Unmanned 24/7 card-operated pumps fill the gap across most of Europe, which is exactly where a chip-and-PIN card earns its keep. On motorway corridors, service areas stay open around the clock.

Is diesel or petrol cheaper in Europe?

It depends on the country. In the week of 6 July 2026, diesel was cheaper than petrol in France, Portugal, Greece, Germany and the Netherlands, but dearer in Italy, Austria, Spain and Croatia. EU-wide the two averages sit within three cents of each other, so route matters more than fuel type.

Plan the trip, skip the guesswork

Refuelling in Europe comes down to one habit: trust the symbols, not the words on the pump. A circle is petrol, a square is diesel, and the sticker inside your filler flap tells you which one your car drinks. If you would rather have the fuel type, the car, the hotels and the route confirmed before you even land, that is what we do. Easy Escape designs bespoke self-drive trips with one flat service fee, so our advice is never commission-driven, and your whole itinerary lives in a companion app available only to Easy Escape travellers. Tell us where you want to go and we will handle the logistics; you handle the driving.

Sources and references