45k? My 135i was stuttering like crazy by 15k. The S4 was cleaned by the dealer as a part of the certification process at 31k. Both are manual transmission.
The views and opinions expressed in this post are those of the author and do not necessarily reflect the official policy or position of Bimmerpost.
2010 S4 Current | 2010 BMW 135i Retired | 2006 Lotus Exige Retired