Ok so ive been here three weeks and every taxi driver has different strategy to mess with tourists. Some 'forget' how card machines work when you reach destination. Others take scenic routes and act confused when you point it out

But weirdly if you start speaking italian even badly they suddenly drive normal routes and card machines work perfectly. Downloaded google translate for basic phrases and every ride costs what google maps predicted

Also theres official taxi apps like Free Now that show fixed prices upfront. Way less drama than street taxis where everything becomes negotiation. Learned this after getting charged €35 for €15 ride near termini

White taxis with TAXI ROMA signs are official. Anything else is probably scam