Spectacular savings
For a vehicle equipped with a 55-liter tank (average) the savings per full is € 50 (€ 85 for Super versus € 35 for E85 ethanol)
For a vehicle traveling 15,000 km per year and consuming 7.5 liters / 100 on average, the savings over one year are approximately € 900 (€ 1,732 for Super versus € 850 for E85 ethanol).
In short, your system pays for itself very quickly, and even more!