Mine is a mkv with a K04 +, about 335 bhp(290whp), and I'm averaging 28.6 mpg for the last 2300 miles.
Nice figures. I've just gone and checked and for this current tank of V-Power, I've averaged 28.6 also! I will probably get around 360 miles to the tank.
The other day I filled up and drove from Bow in East London to Salcombe in Devon, in somewhat of a frantic dash. 241 miles in total. 3hrs and 5m total duration. Average mpg = 19.1. Total mileage from tank = 246
And it was whole lot more fun than ambling along 70mph trying to breach the 30mpg+ barrier!