I,ve had my 35d for just over a year now. Mix of city and highway driving. My average is about 24mpg long term.

As far as the guy pointing out that SUVs are just naturally going to have poor fuel economy ... You're living in the past Sir. It doesn't have to be like that and current diesel engines go along way to making that point. Natural next steps would be mating the diesel engine with an electrical motor, which some manufacturers have already started to announce.