I’ve owned my 2009 Grand Voyager 3.8 v6 Swivel n Go for 3 years now. Being honest, she can be a very thirsty girl when doing short trips. I’ve seen on average 18mpg on short trips. However, on long motorway miles driving steady 50-60mph, I’ve got that up to 38-40mpg. On a 430mile trip I often do, I fill up to the brim. This would probably have got me the whole 430miles if I had the balls to risk it. But the coward in me pulls in for fuel.