The headline rate is the smallest part of a Samos car rental. This interactive calculator builds the honest 2026 total from verified figures: blended seasonal daily rates (economy from €22 low season to €60 in peak August, SUV up to €92), real-world fuel for the island's hilly roads (petrol €2.03/L, diesel €1.73/L, 7–8.5 L/100 km), and the insurance you actually need. Basic CDW leaves a €900–€1,500 excess; Super CDW (about €18/day) cuts it to €300–€500 and Full cover (about €30/day) removes it — but no waiver survives Samos's unpaved gravel tracks, and tyres, glass and the underbody are never covered. The tool also factors extras (child seats €5/day, additional driver €5/day, under-25 €11/day, out-of-hours €40) and the hidden fees that inflate the final bill: €100 biological cleaning, a €25–€30 accident file fee even with zero excess, and traffic-fine admin fees of €15–€30 on top of Law 5209/2025 penalties (pavement parking €150). Most island parking is free. A no-deposit local such as Aegean Sky, Yes or Dream removes the €300+ card hold entirely.