For the first six years I had my 2002 Holden Astra Convertible serviced by my Holden dealer, but for the last two years I have had it serviced by Ultratune. During the latter period I have had a number of electrical problems with the car; the driver's window winder failed and cost $500 to repair, then there was the fuel pump that cost $475 to fix, next came a coil pack and the ignition key transponder at $520 and $220 respectively. In all cases I was told they couldn't be repaired, they simply had to be replaced. Are these common faults? Do manufacturers deliberately build parts that can't be tested and repaired? Can I expect to have more of these problems in the future?
They are relatively common faults. Carmakers do make parts to be replaced rather than repaired, it's considered cheaper for all concerned if a mechanic simply has to pick up a new part and fit it instead of spending possibly hours repairing the old part. It means lower warranty costs for the carmaker, greater volume of work going through dealer workshops, and usually results in lower costs for the owner. It's impossible to say you will have more troubles in the future, but it's a fair bet that you will.