Oliver

sounds like "flaring", a slipping of the transmission, a common trans problem. You can search this site and find a lot of info on flaring.

If it is under warranty take it to them. This is something you don't want to have continue as it will wear out early your transmission.

Keep us posted.

Haasman

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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)