This was a big problem for me when I got my XE auto last May, the best I managed was 24 mpg before the auto box and ECU recall in November '04, I still get cr** urban mpg, but on motorway cruising I get around 34 mpg, which I think is pretty good. Try getting your dealer to check the ECU, it may be that yours needs reprogramming.
I have an 03 XS auto.Tried driving at various speeds from 55-80 mph mainly motorway and good A roads and the best mpg I could get was 27.At 80 mph I get 25.8 mpg.Been back to my dealer and he can't find any faults with the car.Thinking of fitting a K&N filter.Do you think this might help? Thanks Tom.
i have had our new 2.5 manual xse for 2 weeks on our first fill i got just over 27 mpg on second 27.6 i am hoping that as the engine runs in the fuel consumption will improve and if i can average 30+ iwill be happy
Don't want to worry you but I've had my 2.5 XS AUTO for over a year and with close on 13000 miles on the clock I'm still getting between 27-29 Mpg. I have a K&N fitted which has made no dissernable differance.
I'm also running now with PSIpower's power box enhancement which gives much better engine performance and pushes my fuel economy (just) above 30mpg
The K&N certainly improves things if you are running with a booster box or re-mapped ECU as you've got a easier air flow into the engine. I think I can tell a difference with the K&N but the biggest struggle that I have is that the auto box makes things very 'remote'.
If you are in the UK the you might have difficulty getting the filter as I was told it was a US part ... its also nearly £50 .. you'll get the part number from the K&N website.