K11 pizza delivery setup.

[Jumbo]

My k11 is doing about 32mpg which is crap considering she's meant to be doing about 47mpg now I do realise age has a factor but is it really that bad. Is there anything I can do to her to get the mpgs back up I know my way around an engine but without a little of a hint tips I'm not sure where I should start to get this numbers higher.

Spark plugs.
Filters fuel
Oil filter
Oil
Mass airflow


What else could be a factor that could be causing the bad mpg.
If I rape her she gives me about 220miles from full till fuel light
If I drive eco I get about 250 survey she's meant to do a lot more on a tank

 

[Tornado]

I seem to get about 42ish, I'd love to get up to 47. Maybe on a long run at lowish speed. She runs pretty sweetly, but I'd be curious to see what to check.

 

[RYB]

Something's amiss I'm driving round on rich mode (maf unplugged) and still get easily 300+ to a tank mixed driving. I'm pretty heavy footed too.


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[Jumbo]

I made a typo it was 32 ish I get sorry.


I'm getting new plugs filters and oil Gona replace the belts as they look tired . I'm told that will increase the mpg but I doubt it but I know she gets it.

 

[MaxK11C]

Checked your tire pressures?