Here is a great article from unplgged.com about the life expectancy of new appliances. I remember that Consumer Reports used to produce a similar list.
While appliances such as refrigerators have become much more energy efficient, they often do so at the expense of wear items like compressors (much much smaller).
In our last house we had a Maytag dishwasher that was 12 years old and still going strong, it stayed with the house. We also gave a way a Hotpoint range and refrigerator that was 20 years old (still going strong) and a Maytag washer that was 14 years old and still good.