Girlfriends car has some issues
I get 23-24 city in my GTI. 30-32 highway. 35 is a bit optimistic, but you can easily hit 30 if you set the cruise at 70.If the car it a turbo, it will be pretty obvious. There is an intercooler on the front as I recall.
As for mileage, no way will you get 35 MPG, depending on the transmission you will be luckly to get 20-23 in town, likely 28 on the highway?? This assumes everything is working properly.
This site gives reasonably accurate info - Fuel Economy
Not true at all. EPA ratings are usually on the low side. I got 30+ mpg in my 2.0 bug if I kept my speed at 65-70. I got 22-23 around town. It did pretty well.The New Beetles do not get great fuel economy.
The best EPA rating for the 2002 is 28 MPG, my 2003 Convertible is rated at 26 MPG. I doubt you could ever get 30 MPG in anything other than a Diesel bug?