took ownership of vectra 2.2 sxi dti recently and very nice it is.
could any vectechs explain why my fuel consumption is better using the cruise control.
i have on average achieved 50 mpg on normal motorway driving,but the figure is near 60 mpg with the cruise control, this was achieved Sunday driving 240 miles mostly using the cruise control. i thought it would be the opposite way round.
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