Hello I'm thinking of Buying a used RR 3.0 Td6 Vogue 2004 with 48k on clock around £25,000 from a garage
1, Is there anything I should be looking out for,
2, How many MPG would I expect from it,
3, Will this engine run on a vegetable oil mixture?
Thanks for your help with these questions

Does it have full range rover service history?
Get the reg and dealer its been too most, ring them and ask if its been in for any major work.
Diff blowing is a big problem, typically at 3yrs+ or around 65K, landrover fixing them out of warranty though
as standard you can get 25mpg on a run, 21 at worst

no idea about veggie oil, sorry Discovery 4 HSE
1998 110 TUM HS FFR Hard Top XD WOLF
1982 Series 3 Hard Top

*Gone:L462 D5 HSE LUX, L663 Defender 110 HSE, Discovery 3 HSE, 2014MY Range Rover Sport 5.0 Supercharged AB Dynamic; L405 Exec Vogue SE 4.4, 5.0 Supercharged Autobiography, Defender TDCi XS CSW, Defender TD5 HT, Vogue SE TDV8, Vogue TD6, RRSport SC 4.2V8, Classic 3.9 Vogue Auto, Land Rover Series 3 SWB