Fuel cost — E85 vs petrol
−47%
Petrol · 100 km
3.7 L · €7.69
E85 · 100 km
4.8 L · €4.05
You save ≈ €3.64 every 100 km
— about €546 a year (over 15 000 km)
E85 uses ≈ +28% more litres, but the pump price
(€0.85/L vs €2.06/L) more than makes up for it.