Mercedes M or Cayenne?

[denarii]

Hi Guys


I am considering a 3 year old or so Mercedes M or a Porsche Cayenne of a similar age. Can anyone give any advice. The M's seem toall be diesel, what is the fuel economy like between the two? The Ms also only have part leather seats. Any other tips or advices, thanks? Would the Cayenne be a lot harder to sell in a few years?



Rob