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With BMW's focus on fuel efficiency and squeezing the last tenth of an mpg out wherever possible, I'd be amazed if they weren't linked to external temp and only come on when necessary.
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Space Grey/Cinnamon Brown F11 520d SE with Sport Auto.
Pro media pack, visibility pack, sports steering wheel, heated seats, lumbar support, ambient lighting, USB interface, 18" wheels, parking camera, auto tailgate, sun protection glass.
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