The 2016 Prius Eco is rated at 56 mpg combined (58 mpg city, 53 mpg highway)--making it the new all-time fuel efficiency leader among vehicles that don't plug in to recharge their battery packs. ALSO SEE: Next Toyota Prius Plug-In Hybrid To Have 30 To 35 Miles Of Range: Source. You can see all three ratings here.
Corrosion is a natural process, which converts refined metal to their more stable oxide. It is the gradual destruction of materials (usually metals) by chemical reaction with their environment.In the most common use of the word, this means electrochemical oxidation of metal in reaction with an oxidant such as oxygen.orrosion can also occur in materials other than metals, such as ceramics or polymers, although in this context, the term degradation is more common.
Pitting corrosion. Pitting corrosion, or pitting, is a form of extremely localized corrosion that leads to the creation of small holes in the metal. The driving power for pitting corrosion is the depassivation of a small area, which becomes anodic while an unknown but potentially vast area becomes cathodic, leading to very localised galvanic corrosion.