deteriorating

Hi all, Recently I've noticed a slight fall in fuel economy in my w124 300CE. Is it normal for this to happen in the cold weather? I have been flooring it, but only a little. Heaters are usually on full heat. Also, I seem to have a slight voltage fluctuation too. I've noticed that the...

Hi everybody, I've got a 2001 facelifted SLK230 and the 4 alloys are at various stages of deterioration. By deterioration, I mean that moisture has ingressed beneath the lacquer and started damaging the alloy itself. Close-up it looks like a form 'cancer' is attacking the alloy. As part of...