Corrosion
Causes: External influences for example through fall out from soapy water, tree resins, tar, tree blossoms, insect remains, bird droppings, oil heating plants, pesticides and cement dust of through acids, etc.

Flaking
Causes: Mechanical Influences such as stone chips, knocks, etc.

Loss of Shine
Causes: Too little water or fault washing brushes when washing by machine or hand.

Particle Fall Out
Causes: Rain, metal dust, oil, soot, (airborne rust)

Scratches/car wash scratches
Causes: mechanical damage through faulty car wash brushes.

Stone chips
Causes: stones (chippings) of different size striking with c force.

Streaks
Causes: weather influences, in particular ultraviolet radiation, use of unsuitable cleaning agents.

Swelling
Causes: Absorption of fluids e.g. acids, soapy water, solvents, tree resins etc.

Water marks
Causes: water drops which dry after washing the car, but also after rain in combination with contaminants such as salts, lime, etc.