Short answers to the questions drivers ask, worked out with Romania's average prices on 15 November 2026. Every answer has its own page with explanations and examples.
On 15 November 2026, standard diesel costs 10.70 RON/litre on average and standard petrol 9.52 RON/litre, so diesel is 1.18 RON more per litre. Diesel engines use less fuel, so the cost per kilometre matters more than the price per litre: diesel wins on high mileage and long trips, petrol on short city driving.
Read the full answerThe octane number shows how well petrol resists igniting on its own (knocking) when it is compressed in the engine. Standard petrol in Romania is 95 octane; premium grades are 98 or 100. A higher number does not mean more energy, only more resistance to knocking.
Read the full answerOn 15 November 2026, premium petrol costs 10.09 RON/litre on average, 0.57 RON (6%) more than standard petrol. It pays off for engines that ask for 98 octane; for a car that asks for 95, the benefit is usually small compared with the extra cost.
Read the full answerOn 15 November 2026, premium diesel costs 11.56 RON/litre on average, 0.86 RON more than standard diesel. It usually has a higher cetane number and cleaning additives; it helps most in winter and in modern engines with sensitive injection, but it is not required unless the manufacturer asks for it.
Read the full answerFill the tank, note the odometer, and at the next fill-up divide the litres added by the kilometres driven and multiply by 100. The result is your real consumption in litres per 100 km, usually higher than the official figure.
Read the full answerIn the cold, the engine takes longer to reach its best temperature, the oil is thicker and the heating and defrosters draw energy. Tests published by the US Department of Energy (fueleconomy.gov) show that at −7 °C, compared with 25 °C, a petrol car covers 10–20% fewer kilometres per litre in city driving and up to 33% fewer on short trips.
Read the full answerThe first saving is where you fill up: today the gap between the most expensive and the cheapest standard petrol in Romania is 0.55 RON per litre, or 27.50 RON on a 50-litre tank. Over time, driving style, speed and correct tyre pressure save even more.
Read the full answerBecause every network and every station sets its own price. On 15 November 2026, standard petrol in Romania costs between 9.46 RON/litre and 10.01 RON/litre, a gap of 0.55 RON per litre. The network, the location, local competition and the moment the station updated its price all play a part.
Read the full answerThe pump price includes the cost of the refined product, excise duty (a fixed amount per litre set by the Fiscal Code), transport and running costs, the retail margin and 21% VAT, applied last. At today's average petrol price (9.52 RON/litre), excise and VAT add up to 4.71 RON, or 49% of the price; for diesel (10.70 RON/litre) they add up to 3.96 RON, or 37%.
Read the full answerYes, if you drive a lot. Today LPG costs 4.78 RON/litre on average, against 9.52 RON/litre for petrol. Even though the engine burns about 15–25% more litres on LPG, 100 km cost 40.15 RON on LPG in our example, against 66.64 RON on petrol.
Read the full answerAt today's prices, 100 km cost about 58.85 RON in a diesel car (5.5 litres per 100 km) and 48.79 RON in an electric car charged at the reported public chargers (17 kWh per 100 km, 2.87 RON/kWh on average). Charging at home on a household tariff is usually much cheaper than public charging.
Read the full answerOn 15 November 2026, a 50-litre fill-up of standard petrol costs 476.00 RON on average, and 473.00 RON at the cheapest station in the country. For diesel and LPG, see the list below.
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