[Mike Tee]

From the CDN B-Class Product Infomation publication:

Corrosion Protection: fully galvanized, partly double-coated body panels

Mercedes-Benz has developed an effective package of measures for long-term anti-corrosion protection. This is based on fully galvanized body panels, some of which have an additional organic coating on both sides depending on their location, e.g.on the doors or on the front, side and rear longitudinal members. This coating also contains rust-inhibiting zinc pigments. Mercedes-Benz also protects the most vulnerable structural areas of the bodywork with a cavity-fill preserving agent, for example on the front side members, the upper side member plane, the door sills and the rear wheel fenders. The Mercedes-Benz experts also weather-seal the welding seams in order to prevent the onset of corrosion. The seam sealing benefits not only the hood, doors, tailgate, rear wheel fenders and flap over the fuel filler cap, but also a large proportion of the welded points in the floor structure of the new B-Class, including the spare tire and battery recesses.