Bosch DW have a very large market share here. They sell much better than Miele, not only because of the more moderate price, but because the perception here is that it is much, much easier to find parts and qualified service. Americans will shy away from brands (mostly from overseas) if it's hard to find qualified service repair companies. Bosch is commonplace enough that major discounters such as Best Buy and Lowes sell Bosch DWs.
Not so for the washers. I think Lowes sells them, but they are not as common here as Bosch DWs. A previous generation of 70 cm (US sized) washers received poor reviews and did not sell very well. I also have several friends with Bosch wall ovens who HATE them (seven year old oven has needed four service calls, etc.) and regret having purchased them, but even they will be the first to say that Bosch makes superb DW. Their reputation here is that they have perfected DW technology, but their quality in other appliances is not always so outstanding. Note: their Euro sized washers here enjoy a good reputation, so you'll see them in areas like New York City, with many apartments where laundry must be in the kitchen, but Euro size is not as popular when the home has a US-sized dedicated laundry area.