Ive owned some of the nicest rovers. NAS 110s, 90's, MKIII's, LR3/4's, DI's, DII's, Classics, and the list could go on.
When I got the 25 foot airstream, I sold the nicest 09 LR3 i've ever owned and got an F250.
The 25 footer pushed the upper end of the tow capacity of the LR3 empty. When factoring water, clothes, food, any other gear, and my family of 4 ... it would have been irresponsible to the safety of my family to pull it with the land rover. (IMHO). Ironically, the interior of the F250 is as nice as any Range Rover I ever owned. (granted the newest big body rangie I ever owned was a 2014).
I can't speak for gas mileage on the diesel as I have never owned a diesel land rover with anything other than a 300 Tdi.
2018 27' Tommy Bahama
2019 RAM PowerWagon TV-Petrol Hemi
WBCCI # 22342