Driving in Hungary: how the e-vignette system actually works
Hungary doesn't use a sticker at all. Its entire motorway toll system, called the e-matrica, is digital and tied to your license plate, which makes it easy to buy but also easy to get wrong if you type the plate number incorrectly.

No sticker, no physical proof
Everything runs on the plate number in Hungary's central system. There's nothing to display on your windscreen, and no physical vignette to carry as proof. That means the number you enter when you buy it has to match your registration exactly, including any spaces or the way letters and numbers are formatted on your country's plates. A single wrong character means you're driving without valid coverage even though you paid for it.
If you're not sure how your plate should be entered, check your vehicle registration document rather than guessing from memory.
Coverage options are shorter than you'd expect
Hungary sells vignettes in several lengths: 10 days, one month, and one year, plus separate versions for motorways only versus one that also covers certain county roads. Most visitors passing through only need the 10-day motorway option, which is enough for a single trip in either direction.
The country is also split into zones for some vignette types, so a pass covering the motorways doesn't automatically include every road you might drive on. If your route takes you off the main highways, it's worth checking whether the specific roads you'll use require separate coverage.
Buy it before you need it, not while driving
You can buy an e-vignette online in advance, at petrol stations near the border, or through official kiosks. Buying online ahead of time is the simplest option since it removes any pressure to find a working payment terminal at a rest stop while everyone else in the car is waiting.
One detail that surprises people: the vignette needs to be valid from the moment you enter Hungarian motorways, not from the moment you cross the border on a regular road. If your route enters Hungary on a smaller road before joining the motorway later, make sure your vignette's start date already covers that earlier point if there's any ambiguity.
Fines are checked electronically
Hungary uses automatic plate recognition on its motorways, so there's no toll booth to physically stop you if something's wrong. That also means there's no moment where an operator catches a typo before you drive off. Fines for missing or incorrect vignettes are issued after the fact, based on camera records, and they're notably higher than the vignette price itself.
The practical takeaway
Double-check the plate number before you pay, buy ahead of time rather than at the border, and match your vignette length to how far you're actually driving inside Hungary rather than defaulting to the shortest or cheapest option without checking the zone coverage.
