Originally posted by stevebrot incidence of defect and/or serious failure is fairly high for interchangeable lens cameras across brands. Current Consumer Reports data indicate: Panasonic (4%), Canon (5%), Sony (7%), Pentax (7%), Nikon (8%), and Olympus (8%). The Pentax numbers include the recent general recall of K-3II bodies.
To put this in context, those sort of rates are generally on the low-ish side for consumer electronics items. Choice (Australian Consumers Association) did a survey this year of 14,000 members about product reliability. This is what they found regarding smartphones:
"This year, 9007 people told us about their smartphones. Smartphones are one of the least reliable products we asked members about; on average one third (34%) of owners reported problems with their smartphone in the first five years of use. While most problems (23%) are considered minor by owners, one in ten (11%) have major problems where the phone completely stopped working or operation was seriously affected."
My experience is consistent with this: I have had two smartphones fail. I have never had a problem with a camera (touch wood).
Here's what they found about televisions:
"8,773 people told us about their televisions. Overall, televisions are very reliable – only 5% experienced a major problem in the first 5 years and only 15% had any problem at all in the first 5 years. The most common problems with televisions are picture quality and smart TV software issues."
I guess smartphones tend to get rougher treatment than TVs and more use than cameras, but I think that overall cameras are probably at the more reliable end of the spectrum.
None of this is an argument against extended warranties though, because a serious defect like the aperture/mirror controller issue can be uneconomic to repair.