Audi A4 2001 Owner's Manual page 10

Body
Doors
The doors of the Audi A4 demonstrate a sig-
nificantly increased rigidity due to the one-
piece door shell construction.
For the first time, a so-called spray-on noise
insulation is used, which is sprayed on as
required and allows weight reduction for the
same effectiveness.
In addition, the doors have been fitted with a
second weatherseal. One weatherseal is fitted
to the door and the other is fitted to the body.
The new door concept permits a reduction in
the overall noise level of a further 3 dB (A) and
thus contributes to improving the aero-acous-
tics.
10
Noise insulation
SSP254_066
Door trim
The newly developed sub-frame is bolted to
the door shell via fitted bolts.
Door seal
Door frame
SSP254_067
Roof
Roof trim strip
Door window
seal
Door window
Door frame seal
SSP254_075