Hi Guys, this is absolutely fascinating to know. When I was looking for a replacement car (from my BMW320dGT) I too looked at the C class. It was nowhere near as comfortable as the IS300H and definitely not as good looking. So, great to know that there will be no serious problem with it in the long run 🙂 I do about 20k miles per year so hope to get decent economy out of this beauty. Thanks for the info!