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Audi TechDay Quality : Precision - fit, finish and workmanship

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Khatir Soltani
Press release
Source: Audi(Germany)

Deeply lustrous paint, precise light-refracting edges, uniformly tight body joints – every Audi embodies perfection on the road. The interior is also finely honed and conveys a confident air of quality. A tremendous amount of effort goes into the precision handling of surfaces.

Inner master jig: Geometric contour test, interior.

At Audi, this maximum precision begins with the manufacture of the dies for the sheet metal presses, as this is the only way to achieve the extremely tight tolerances allowed by the brand. New high-end joining technologies are constantly being used in body construction – the invisible joint in cars like the A4, for example, is produced by means of plasmatron welding. An extreme amount of effort is also dedicated to corrosion protection; Audi floods cavities in the car body with hot wax in a sophisticated procedure.

This strict dedication to quality is also reflected in the paint – a layer a tenth of a millimeter thick. The effect finish, in which tiny metal particles in the pigments change the shade depending on the light and angle, is applied in such as way as to subtly underscore the lines of the design. Strict specifications also apply to areas such as the engine compartment and the inside of the rear hatch. Modern instruments control the quality and color values of the finish, and Audi also performs painstaking color matching in the interior.

The flawless finish of every car demands perfection across the board, and Audi operates a whole series of measuring systems and mock-ups called master jigs. Car bodies and their sub-sections as well as interiors are built by hand; this “zero-reference environment” enables the specialists from Quality Assurance to check and fine-tune the fit, the impression and a number of other criteria.

Color matching in cockpit by means of colorimeter and visual inspection.



photo:Audi
Khatir Soltani
Khatir Soltani
Automotive expert
  • Over 8 years experience as a car reviewer
  • Over 50 test drives in the last year
  • Involved in discussions with virtually every auto manufacturer in Canada