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Trieste to Spalato by car: fuel cost, tolls and vignettes 2026

Italia→ Slovenia→ Croazia

About 530 km through 3 countries. At today's prices the fuel for one way costs about 67 € with a petrol car or 62 € with a diesel.

Distance530 kmapprox., one way

Petrol 9567 €7 l/100 km

Diesel62 €6 l/100 km

Round trip134 €fuel only

Where to fill up: petrol is cheapest in Slovenia (1,718 €/l). Italia is the most expensive on this route (2,037 €/l) – a 50-litre tank there costs about 15,96 € more. Fill up before you cross into Italia and buy only what you need there. Motorway service stations are usually the most expensive – leaving the motorway for a few minutes often saves 10–20 cents per litre.

Fuel cost by country

FuelConsumption l/100 kmDistance km

Country	km	€/l	Litres	Cost
Italia	10	2,037	0,7	1,43 €
Slovenia	50	1,718	3,5	6,01 €
Croazia	470	1,803	32,9	59,32 €
Total	530		37,1	66,76 €

Assumes you refuel in each country in proportion to the distance driven there. Station averages from our daily data for Italia, Slovenia. European Commission Weekly Oil Bulletin (week of 12/10/2026) for Croazia.

Vignettes and tolls on this route

Italia: Distance-based motorway tolls, paid at toll booths or electronically. How it works →
Slovenia: Vignette required on motorways – from 16,00 € (7 giorni). All prices →
Croazia: Distance-based motorway tolls (toll booths, card or cash; ENC tag optional). No vignette.

Cars up to 3.5 t. Buy vignettes only from the official sellers – unofficial sites add large fees.

Questions

How much does fuel cost from Trieste to Spalato?

For about 530 km a petrol car using 7 l/100 km needs about 37 litres, costing about 67 €; a diesel car using 6 l/100 km about 62 €. One way, at current national average prices.

Where is fuel cheapest between Trieste and Spalato?

Petrol is cheapest in Slovenia (1,718 €/l) and diesel in Slovenia (1,934 €/l); the most expensive is Italia (2,037 €/l).

Do I need a vignette from Trieste to Spalato?

Yes – for Slovenia. Buy it online from the official seller before you cross the border.

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Distances are approximate and follow the usual motorway route; your navigation may differ. Prices are national averages and change daily.