Fuel Injector problems of the 2006 Volkswagen Passat

Started vehicle in normal fasion, noticed large amount of vibration from engine compartment, check engine light came on. Upon acceleration, vehicle hesitates drasticaly. Took to vw service center and they ran diagnostics. 3 fault codes - po300 multiple cylinder misfire detected, po304 cylinder 4 misfire detected, p3073 throttle transfer pump electrical malfunction in circuit. Vw service center swapped ignition coils and plugs - duplicated faults. They wanted to put in new injectors, exhaust lifters, exhaust rockers and fuel pump control module for $1800. 00 - and since they were already in there, they wanted to replace timing belt, tensioner, and water pump for another $340. 00 I was told that if I don't mind the bad performance/hesitation then it won't hurt the engine any more then it already is. This is a 2006 vw Passat 2. 0t lux with 80,000 miles. Crazy that all these problem occur just after the 75,000 wanantee was up.

My vehicle went into the shop (star motor) April 1, 2008 for an engine light indicator. I was told the fuel pump and cam shaft were bad. They were replaced and I got my car back on April 16, 2008. On may 17, the light came back on and I had to take it back to the shop. They replaced the coils (not sure what these are). On may 18, 2008, the engine light came back on and I had to take it back to the shop. They informed me that the cylinder head needed to be replaced because the compression was not good in cylinder #'s 1 and 3. They decided to flush the turbo/injector system and time the vehicle. I got the car back (not sure of the date). On may 5, 2008, the engine light came back on and I had to take it back in. When put on the computer, I was told that the light indicated and read a cam shaft/misfire 3. Months earlier, when the engine light first came on, we called in to star motor and my husband was told that "as long as the light wasn't flashing, it was okay. " I told this to star motor on may 18, 2008, and gail told me that is correct. That is what they have been told at the home office. Obviously, that is not the case. As soon as the engine light started flashing, we called and set up an appointment within 3 weeks. The flashing was very intermittent (flashed maybe once or twice a day). My car is still not fixed and star motor does not appear to know what the true problem is. I was told that the Volkswagen home office discussed my car in a classroom setting and they are merely able to guess what the problem is. This is a high end car; 2006 Volkswagen Passat, and these types of problems should not be occurring; fuel pump, cam shaft (twice), etc. Star is trying to work with us. They have even given us loaners to drive, but Volkswagen is not willing to help at all. I have been doing research online and have found that these types of problems are far reaching and not simply ours.