hi thanks for that just done a 200 mlie round trip on motorway at 80mph trip saying 43.1 mpg in 6th gear is that about right getting about 420miles to the tank if i pull away slowing increasing the revs at 1800 rpm it judders once like turning off the ignition for a slit second also at 2000-2250 revs it shurges on cruise control hope someone alse could tell me it they know the problem many thanls ian