I always fill my car when I buy fuel, I find that also makes it easy to check on your fuel economy.
Being a bit OCD I started keeping a record when I suspected my old Starwagon was using more petrol than it should, turned out to be a blocked air filter.
Nice spreadsheet Bruce!
you get spreadsheets built into the dashboard these days, saves faffing about
Max, note the Nov 25 activity, then the inconsistency of the last three entries, continuity is so important when spreadsheeting.
November 2025 involved towing, hence the sea of red.
