Other people have discussed washing machines below, but there's even more to say on them. Washing machines used to have long warranty periods. Nowadays they tend to be sold with a 2 year warranty, which I believe in the EU is the required minimum. And these manufacturers (Bosch, for example) even have the gall to claim that their products are high quality and that this warranty period somehow proves this, or is in any way a long period.
AFAIK washing machines used to have 10 year warranties, but they cost more along the lines of £800. Now we have £250 washing machines with 2 year warranties. One way of reducing costs is to reduce the number of parts. Sealed tanks, as mentioned below, are one such example. This directly impairs the repairability of the product.
I suspect also that models are released at greater frequency, possibly due to a need to take advantage of price fluctuations in wholesale parts markets (if you can make a washing machine using Part A or Part B, and one month A is more expensive than B, and then this inverts, this creates pressure to constantly design new models to minimise pricing). Though this is just a suspicion, it would make sense: I do know that the (monolithic) spare parts are stocked for a particular model for less time, which means that the prices of the spares which are available are very high.
Water efficiency regulations also appear to have forced modern washing machines to use inadequate water for rinsing. There are numerous stories of hypoallergenic people who find that their new washing machine leaves significant detergent in clothing. Some people have even tracked down old (and for that matter better made) washing machines just to get one which will rinse properly. At other times the actual temperature of the water on the '60 degree' setting has been tested and found to be rather on the low side. (Supposedly all of this efficiency regulation, rather pathetically, only tests the 60 degree programme in the first place, putting a certain degree of competitive pressure on energy efficiency for this setting.) This is particularly insane given that the environmental cost of these quasi-disposable 2-year-warranty washing machines must be much higher than the environmental cost of their resource consumption.
I think consumer goods legislation should recognise that different minimum warranty periods are appropriate for different kinds of product. A legally required minimum warranty period of 6 or 8 years for washing machines, for example, would instantly create pressure on manufacturers to increase the longevity and repairability of their machines.