So - a quick update. Our Panda T/A had a service last week. Drove it ~300 miles at the weekend and.... You guessed it, worse economy in Eco-mode.... Not only that, but there's definitely far less pull in the higher gears ( I guess throughout, but more noticeable in the higher gears). Not good. The wife picked the car up and she said she recalled them mentioning a software update.... Hmm. We got 43mpg over the weekend, which having done the route previously and got up to 58mpg, is worrying. Even allowing for the cold, I'd have expected a good 5mpg more, especially consciously driving to get the best mpg we could. I'm going to call the dealer and ask what was done (and why)....