longrun 
2008 BMW 5 Series Sedan 535i 4dr Sedan (3.0L 6cyl Turbo 6M)
Charge me
 In all the recent reviews of this model,I do not see the most exasperating quality of it's day to day performance. I refer to the battery drain when parked.The first winter I used the car,I did not start it for about 3 weeks since I do not drive on salted roads. The display had suffered a 'reset' which happens when the battery voltage gets too low. I received a statement from BMW that the car must be driven at least 40-50 miles daily to avoid this reset happening.I am retired and use the car mainly for shorter distances-less than 50 miles.As a result I have to connect a 'sustaining' charger every 2 or 3 days to keep the volts up.  Annoying and apparently still needed on the 2011's!