I used to get 24mpg on average. 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

I get 18.5 mpg on mostly short B-road trips. This goes up to 22mph on long motorway trips

Hopefully other members can correct me if I'm wrong on the figures below:

Check tyre pressure is correct
Check no callipers are sticking
Don't use supermarket fuel (worth 1-3 mpg?)
Avoid sports mode (worth ~2-5 mpg?)

Check the EGR isn't stuck open. You can get an EGR blanking kit on fleebay for around ~£40 which I read saves another 2-3 MPG - more info: http://www.fullfatrr.com/forum/topic6705-60.html

Finally if you do a lot of miles, you can get an economy remap

I'm getting 17.5 from my 4.4 v8 petrol on the school run & 25 on the motorway if I don't go over 80mph Range Rover 4.4 V8 Vogue

Kingpleb,

Does flushing the fuel system really help mpg? I was handed a flyer the other day for a company that have a chemical system for flushing diesel fuel lines. I was pretty sceptical, but have you some experience?