Much appreciated
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A couple of breakdown companies cover cars without a spare wheel - RAC and AA are not obliged to help
n/b regarding the initial post and measurement. The highest mpg was steady 49mph, little or no gradients with no extra equipment in the car, no cruise, no drafting. The worst was 80mph average with gradient changes and overtaking. I sometimes draft, in the fast lane x5/4x4's are good and behind lorries in 50 zones, although I've not measured that as results are not consistent. Also when I mentioned temperature the results were mid-summer and winter results will be considerable less, maybe 15mpg less