What's wrong with yours?
I'm at work and don't have my bentley to check if it's the same but I have an 01' 1.8t I had to change the tank on due to being hit and the guy not having insurance.
And let me tell you, it's NOT fun. It was actually quite awful. haha. There's probably an easier way than what I did, but I couldn't find it. After running the tank as empty as possible, we removed both back wheels, both back fenders and the bumper (a little easier IMO than removing just the back passenger side..) The tank WOULD NOT come out, we ended up having to drop the exhaust to give it more room to come out. Still wouldn't. Had to drop the rear axle (luckily not having to undo the brake lines, just be careful to support the axle to not put stress on the lines..) That gave us enough clearance to get the tank out.
The fuel lines are actually pretty easy to get off, just be super careful not to break them. They do get brittle with age and it's not cheap or easy to replace the lines all the way up to the front of the car if you break one.. There's a small button on the clip. I used a pair of needle nose pliers the depress the "magic button" and the lines came right off. No resistance at all. (I think most that have broken them probably just yanked on the lines.. don't forget the button.)
Also note the orientation of the fuel pump. It needs to be exactly lined up when you swap it in the new tank to work properly. It's a bit of a pain to remove but not too awful. Mine made me bleed lol. Also make sure the "sock" on the bottom of the pump is clean before reinstalling. I didn't, and ultimately had my pump acting up less than a month later. Which resulted in me having to remove and replace it. Luckily the pump was only $50 from a local salvage yard.
That's all I can think of at the moment. Feel free to PM me if ya get stuck. I kinda had to fumble my way through it because not a lot of people on here have had to replace their gas tank. Oh, and don't even think this is possible to do on jack stands.. it's not. I strongly recommend use of a lift for this....
Oh, and change your fuel filter while you're in there.
