Automatic dishwashers are another appliance that should last a decade or more. However, you often can save money by buying a newer energy-efficient unit. Brand new units can be bought for $400-$600 while repairs of various operating mechanisms typically run $150 and up.
If your dishwasher is getting near the 10-year mark, a major repair may be a signal that other components are also on their last legs. It won’t take many service calls to pay for a brand new unit.