Last week Carter took a look at a US-legal C5 Audi RS6 Avant that in terms of “super wagons” is right up there, and now that they are over 15 years-old, serious collectible vehicles. Thing is, you don’t get these amazing long bodies without some serious creative engineering and doing things like twin-turbocharging an already big V8. Mercedes-Benz is never one to be outdone, so they jumped into the game with the first-generation E55 AMG Estate and then went nuts on the W211 chassis with the supercharged E55 and 6.2 liter V8 E63. Today’s car is is the latter E63 that is just 1 or 62 examples produced for the 2007 model year for the US market. However, just like the RS6, big power means big issues, and judging by this car’s history, the E63 is not immune to that.