WARNING: This page is about a different car, the 2009 Audi TT and 2008 Audi TT. However, it is still accessible from the selected car via links, so may be relevant.
Honing Dimension
Piston Diameter
Cylinder Bore Diameter
Basic dimension
mm
82.465 1)
82.51
1)
Measurements without graphite coating (thickness = 0.02 mm). The graphite coating wears off.