Alternator failed - £145.
Water pump collapse - £275.
Steering rack leak - £428.
Idle control failure - £183.
Alternator failed again - £156.
Hand brake recall.
Hand brake still does not work well.
Digital display faults - pixel dropouts.
A car less than 4 years old should not be developing this number of serious faults especially when the car is not being driven hard. It seems that the car has a large number of faulty components. The idle contol failure was particularly serious because the car would cut out when turning a corner and you would lose power steering. This resulted in a number of near misses!!
I too have a 4 year old Vectra. I've had similar problems as those noted. In addition I have had a problem with the air con which will cost in excess of £250 to repair. Interestingly, I had an identical problem with the idle control. I took the car into a Vauxhall main dealer and it was repaired free of charge. I was told that this was a common problem and would cost me a lot of money to repair at a garage other than a main dealer. The repair took about 15 minutes to sort out and involved changing some electronic circuitry. I was surprised by the service I received as the car was not under warranty and I was not aware of a recal, however I'm not complaining.