Just to bring up a old post. I have exact same problem with my 08 reg Normal GTi (24k miles), especially now the weather has gotten a bit colder. Every morning I start the car, although it starts first time, It hesistates, almost as if its going to fail and then fires up. I've got the Liquid Golf Gauge installed and that has not revelaed any fault codes. The car has also been dyno'd at Awesome GTi who has said the car is in healthy condition. When speaking to a staff at Awesome, they recommended checking the battery?
Is it worth leaving the car with the garage to have this problem investigated or is this a common characteristics of FSI engines?