Forgive the ignorance but I am trying to decide on which engine for a new Rav4. Looking at the purchase options it shows the following choices:- 2.0 D 4 D, 2.2 D and 2.2 D-cat. I have trawled the forums and I am becoming more confused by the minute. My understanding is that 2.2 D-Cats have an EGR valve that burns extra fuel, hence the number of topics re heavy consumption on 2.2. That said does the 2.2 D not have a Cat then? If not what, if anything is it replaced with? Would I be right in thin