illogical

Having a bit of head-scratch re my LCR’s touring mpg, wonder if you folks have any suggestions? :headhurt: Bought the car – a ’03 210, 45k, 1 owner, fSsh, standard map – in June ’08. At first, its touring/motorway mpg was 34-36 when cruising at a steady 85-90mph (ie 3250-3500rpm in...