If the engine is misfiring whether it be running lean/rich then it's only going to chew through O2 sensors.
Misfires can be so many things. But the fact that it's not isolated to 1 cyclinder gives a bit of a clue.
The AUE uses a single coil pack for all cyclinders, if it's dying this would be my prime suspect. They're about $150 on eBay, or you could try source a 2nd one, think the part no. is 021 905 106C.
Alternatively it could be the MAF, Camshaft Position sensor or a vaccum leak. Really need more info.
One thing I would definitely do though is fix this "Brake Switch P0571" and get it re-scanned. Brake switch's can wreak havoc with ESP system and all sorts of crazy stuff happens (loss of power being one).
2004 VW Bora 4motion | 3.2 Swapped - R32 Trimmings | BBS CH | Forever fixing this bitch
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