Please bear the following in mind

At the onset of winter, have your vehicle winterproofed at a qualified specialist workshop, e.g. at an authorized Mercedes- Benz Center.

Observe the notes in the "Changing a wheel" section

    See also:

    Transfer case
    The vehicle has permanent 4-wheel drive (4MATIC). Power is always transmitted to both axles. Performance tests may only be carried out on a 2-axle dynamometer. The brake system or transfer ca ...

    Safety, Reliability & Mileage
    The CL has not been crash-tested by the Insurance Institute for Highway Safety, nor is there reliability data for it. The CL550's mileage is estimated to be 15/23 mpg city/highway, and it takes pr ...

    LATCH-type (ISOFIX) child seat anchors in the rear
    WARNING Children that are too large for a child restraint must travel in seats using normal seat belts. Position shoulder belt across the chest and shoulder, not face or neck. In order to att ...