I average around 30mpg in my 4.4 and have done for years across various RR’s. I drive to make progress rather than minimise mpg on a variety of roads daily, normally over 20k miles per annum. MY23 D350 HSE
On my 7th RR plus various other JLR vehicles

The main reason I might choose a 3.0 tdv6 is because you can fit 18” compomotive rims. ______________________________
Vogue tdv8 08MY poverty pack - wow

I pull a very large Tin Tent, I have pulled it with a VW V6 and now my 4.4 TDV8 the v6 was good very good or so I thought until I got my V8, My FFRR is the car I should have bought in the first place it will do all I ask of it in peace and comfort and leaves everyone up a hill in my wake? I would not think about a V6 for my purpose`s or the smile it puts on my face when I drive it, Just my two bobs worth?

My FF is used to tow my caravan (2500kg) all over the UK and Europe and it's just brilliant at doing so. Compared to the V6 it's more powerful and therefore more relaxed. My D3 and D4 were excellent tow cars but the V8 is better at pulling the heavier load. The V6 still does a great job but the V8's better. If you're not towing then I'm sure the V6 is ample for most uses.

You have the same Tin Tent as I so we know the difference and what we are talking about ( maybe )

I know it’s damned heavy and the V8 can still do the keeping up bit. As far as knowing what I’m talking about........... possibly?