My wife's main commuter is a Breezer Uptown 8... I can only guess that the bike has seen close to 30,000 miles and still looks and runs like new.
We added the full chaincase as this was not a stock item in 2007 and it reduces the need for chain cleaning / oiling to a semi annual event and the chain life has been astonishing. It also got a new stem and wider bars with more backsweep and the Brooks saddle and the seatpost replaced the stock bits.
It is such a great bike and was worth every penny... they are still one of the best off the peg bikes you can buy and the new models come with a full chaincase, albeit not as nice as the one we fitted.