Does Avis require an IDP in Bulgaria?

Avis's standard minimum rental age is 25, though it rents to drivers as young as 21 in most US states/provinces (some locations require 25 by local law); renters aged 21-24 pay a young-driver surcharge of roughly $25 per day in the US (about $35/day in Canada).

Avis requires an Avis-honored credit or charge card (Visa, Mastercard, Amex, etc.) and places an authorization hold covering the estimated charges plus a security amount; Visa/Mastercard debit cards are accepted at most US locations but are subject to stricter checks, and the card must be in the renter's name.

Additional drivers must be at least 25 (or meet the underage rules) with a valid licence and typically cost about $13 per day, capped near $65 per rental; in California the fee is waived for a spouse, parent, sibling or child of the renter. Avis requires a valid driver's licence held for the entire rental period that is not suspended, expired, revoked, cancelled or surrendered; it does not publish a fixed minimum holding period in the US, though some international locations require the licence to have been held for 1-2 years.

Avis generally permits US-to-Canada travel if the renting location is notified in advance, but driving into Mexico is restricted (typically corporate accounts only, no one-way, and Mexican insurance purchased through Avis from border states); one-way rentals are offered with a drop-off charge that may apply on certain rates.

Avis states that "International Driver's Permits are valid only if presented with the original local license. An International Driver's Permit is not acceptable by itself." Foreign licences are accepted if the issuing country participated in the 1949 Geneva Convention on Road Traffic or has a reciprocal agreement with the US; non-Roman-alphabet licences effectively require an IDP, and renters with a foreign licence may need to present a passport.

Motorways and main roads require an electronic e-vignette tied to the number plate (no sticker); buy it online at bgtoll.bg, via app or at terminals/petrol stations before driving. Cars up to 3.5t pay about 15 leva weekend/weekly, 30 leva monthly or 97 leva annually, and a few bridges/tunnels have separate tolls.

Sofia uses Blue Zone (centre, ~2 euros/hr) and Green Zone (~1 euro/hr) paid parking, payable by SMS to 1302 (blue) or 1303 (green) with the plate, or via apps like URBO; overstaying risks a wheel clamp or tow, so confirm coverage of foreign-plated cars.

Police impose on-the-spot fines for speeding, phone use and no seatbelt; electronic speed-camera tickets carry a discount if paid within 14 days, and rental firms pass camera fines to the hirer along with an admin fee.

Call 112. For anything beyond trivial damage Bulgarian police (KAT) should attend and issue a report (protokol), which insurers and rental firms require; do not leave the scene, and use the warning triangle and hazard lights.