Hi there, thought I would update you on my Megane Coupe Cabriolet. I did a 500-mile return trip over the late May bank holiday and the mileage was up to 52 mpg, (on my drive home from Plymouth when I bought the car it was returning 42 mpg). This Tuesday I went up to Axminster and back and on checking the average mpg I was delighted to find it was up to 58 mpg, This is even better than the results on the Laguna which reached a high of 54 mpg. This result was obtained at a cruising speed between 68 and 73 mph, keeping up with other traffic. Another 500-mile trip coming up in a couple of weeks, doubt it can get much better, but there is a chance!!!. Thank you very much for your product, it is truly remarkable.