Been racking my brains quite a bit and thinking potential spark plug issue...
My mpg has been slightly poorer around same time of the slow acceleration issues, both linked to bad spark plug(s). I have done 8k miles since last service so who knows (half of those motorway miles)
Eurocarparts have a black friday deal so can get 4 spark plugs and HT leads for only £25....if it doesnt make a difference then its not costing much at all.
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