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Discussion Starter · #1 ·
Hi, just wondered if anyone could help me with this issue thats just started to happen on my Mini Cooper S 2010.

While idling/accelerating the battery voltage stays at 13.7v, while coasting with no throttle it goes up to 14.6v, as soon as the throttle is pressed it drops down to 13.7v again, it only started to do this a few days ago, before it would stay at 14.6v unless i came to a stop where it would drop but then come back.

Car currently has no issues and everything works fine, just worried this is an early sign of a bad alternator or something so its stressing me out as i dont want to be left stranded!

Any help/advice would be greatly appreciated!
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