Mine is a 2016 M3C garage Queen with 14,000 km. I insure it year round and I try to drive it every few weeks during the winter when weather permits to warm up the fluids and keep the tires from flat spotting. About every three weeks I put the CTEK charger on. No problems to date with the battery. I asked my service tech about battery life last service and he stated that he had encountered no problems with the F80/F82 generation to date. Coming up to 8 years and it does make me nervous as I usually do a summer trip to the Kootenays. No BMW dealers there so I don’t want to run into problems out of town. Kind of a costly precautionary replacement so “what does one do”? Hopefully it craps out while I am in the city.
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