This innovative system improves the performance of gas engines via water injection. Bosch WaterBoost uses demineralized water injected directly into the intake port. The water cools off the combustion chamber, thus boosting power generation. This decreases fuel consumption by up to 13% and carbon emissions by up to 4%. A 5L (1.32 gal) tank of demineralized water lasts for 3000 km (1864 mi) of regular driving. This auxiliary system is now being offered to automobile manufacturers worldwide.