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Discussion Starter · #1 ·
I don't get this... Was getting about 40mpg on motorway before service, now struggling to get 32, only thing I can think of is that I had non-standard plugs fitted, would that cause it?

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Discussion Starter · #6 ·
Just basic service, only things replaced we're plugs and pollen filter, oil was done recently and it's got a ktec filter... Could wrong plugs make it run richer?? They were recommended by RS Tuning for mapped cars but mine is standard, does it matter?

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I don't get this... Was getting about 40mpg on motorway before service, now struggling to get 32, only thing I can think of is that I had non-standard plugs fitted, would that cause it?

Cheers
Wooooooaah! Even 32 on a motorway run would be a record for me! Currently managing 25.5 mpg on my commute along slow roads.

My cambelt hasn't been changed yet - it's due in the Summer. It'd be great if I had an MPG boost like that! Can a tired / ill-fitted belt really make an 8mpg difference?
 

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I average a true 26mpg over 5000 miles on mostly motorway! I don't think I could reach the dizzy heights of 32mpg....I need to slow down.

Paul
 
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