Had my 99 S type Terracleaned a while back, but have only been doing trips between home, Tesco, workshop and home. 8/10 miles a day. My before MPG was 17.1 after MPG is 22.4! Last weekend I did my first run of any distance. 390miles on 9 gallons = 43 MPG! About half was motorway. Well pleased!!

 

Nice one, had my A6 Terracleaned also.

On one tank ( an economy run over 4 days or so ) I managed to get my mpg to creep up and at one point saw 64.1mpg for more than a few miles.

I averaged out at around 50.7mpg over the tank and I travelled 795.5 miles until almost empty.

Pretty well pleased and good results for such a big heavy car

 

What is this terraclean you all speak of?

 

See link below..

https://www.jaguarforums.com/forum/d...ght=terraclean

available for petrol & diesel cars