The sheet represents the core of the completely encapsulated underbody. The large high-voltage battery is located beneath the passenger compartment and is protected from below by an aluminium sheet. Volkswagen has developed an innovative underbody design for its purely electric ID.3. Every year, scores of Volkswagen models undergo this tough test, in which an average of 68 kilos of salt are used per year and vehicle. The programme lasts six months during which the vehicle is subjected to 90 cycles, simulating twelve years in the hands of the customer. Every single new development is tested here and subjected to different vehicle testing scenarios – from grit, salt water and pot holes to a climate chamber and hydropulse system. And this is exactly where an important element of Volkswagen’s concept comes into play: the Dynamic Corrosion Test, which is carried out by Development at the Volkswagen proving grounds in Ehra-Lessin. These stones damage the paint while driving, thereby creating points of attack for road salt and water. However, as long as car bodies continue to be made from sheet steel, and road surfaces have grit and small stones, it will not be possible to prevent corrosion entirely. Volkswagen grants its vehicle customers a 12-year guarantee against rusting
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