My v5 is new (2 weeks and about 400 miles only). We've had a Gen III 3 for a couple of years so I am used to the pulse & glide method of driving to increase fuel economy. But I was having problems doing the same with the v5 because the pulse seemed much harder -- the car is heavier and it takes much longer to get to speed. So much so that by the time I got to speed, my glide time was often cut short by traffic getting in front of me or running out of road (stop sign or traffic light). My first tank was 45.5mpg on the computer, 44.1 calculated on fuelly. So I decided to try using Power Mode for the pulse. After 1 cycle of commute (about 35 miles total), the computer was showing 54.7mpg (I had to take a photo to one-up my wife's mpg numbers in her Gen III!) This is US gallons (California spec car with tire pressure as delivered by the dealer) at about 70 degrees, mostly flat driving, about 28 miles highway (65mph avg) and some city miles. Using Power Mode for the pulse seems to deliver much more torque to get to speed. This helps keep pace with traffic as well. I noticed that with Power Mode, I could engage the glide much sooner and the longer the glide, the better the mpg numbers. I will be interested to see how these computer numbers match up to the calculated mpg when this tank is done. Has anyone else noticed this? I've read that Power Mode only modifies the pedal sensitivity, but I feel the torque response of the car is much better in Power Mode. Perhaps I just don't push down the pedal hard enough when in Eco or normal modes to get this response out of the engine (Having been trained to not push the gas pedal too hard). But I think I am going to switch to Power Mode as my normal driving mode and squeeze those glides as long as possible.