I've had the magna for over 2 years, they are very cheap to look after. Biggest cost when I first got it was replacing pads and rotors all round which is not really anything breaking that's just maintenance. That was like $300 for parts, general servicing is $100 every 6 months.
Have replaced stuff like rack boots, rocker cover gaskets all small stuff. If anything big goes wrong, I'd cash in the rego and buy another car. Touch wood though this and the Pajero I had before it have been very cheap to look after. Do routine maintenance and they are simple reliable cars.
