Fuel stations Trieste → Istria (Croatia) is a 60 km transit route along the A1/H5 and takes about ~50 min. The cheapest fill-up comes from leaving the motorway — for example at Divača — where regulated prices apply.
Regulated prices for petrol 95 and diesel in Slovenia change every 14 days, on every second Tuesday.
An electronic vignette is mandatory to drive on Slovenian motorways.
Take the exit at Divača and refuel off the motorway — regulated prices apply there and are lower than at motorway service areas.
Fuel in Slovenia is substantially cheaper than in Italy — fill up right after the border.
Dragonja is a smaller crossing; the last cheap stations are around Koper and Lucija.
stations
Fernetiči (meja) — 0 km
Divača — 12 km
Koper — 40 km
Dragonja (meja) — 60 km
FAQ
How long is the drive from Trieste to Dragonja?
About 60 km, roughly 50 minutes on the A1 and H5.
Why refuel in Slovenia rather than Italy?
Petrol 95 and diesel prices are regulated in Slovenia and are usually substantially lower than in Italy.
Where are the last cheap stations before the Croatian border?
Around Koper, Izola and Lucija — Dragonja is a small crossing with no stations right at the border.