Environmental factors influence the rate of corrosion

Moisture
Accumulation of sand, dirt and water on the vehicle body underside can accelerate corrosion. Wet floor coverings will not dry completely inside the vehicle, and should be removed for drying to avoid floor panel corrosion.
Relative humidity
Corrosion will be accelerated in areas of high relative humidity, especially those areas where the temperatures stay above freezing where atmospheric pollution exists, or where road salt is used.
Temperature
A temperature increase will accelerate the rate of corrosion to those parts which are not well ventilated.
Air pollution
Industrial pollution, the presence of salt in the air in coastal areas, or heavy road salt use will accelerate the corrosion process. Road salt will also accelerate the disintegration of paint surfaces.
See also:
ECO mode
Adjusts engine and transmission points to enhance fuel economy.
NOTE:
Selecting this drive mode will not necessarily improve fuel economy as many driving factors influence its effectiveness.
Oper ...
Ride & Handling
Midsize luxury cars run the gamut from comfortable to rigid; the M is closer
to rigid, though not so much that it's punishing to drive. My test car last year
had the Sport package — which augments ...
Washing
Wash dirt off the vehicle with a wet sponge and plenty of water. Clean the vehicle thoroughly using a mild soap, a special vehicle soap or general purpose dishwashing liquid mixed with clean, lukewarm ...
