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V50 roof rail noise question?

posted by  garrard on  Thu Jan 13 13:24 CST 2011
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last visit: Mon Oct 20 12:36 CST 2014
[RELATED]

Volvo accessories brochure from 2007 (latest I could find with mpg impact mentioned) said 3% improvement with roof rails. I'm trying to get real numbers from Volvo technical, but sounds to me like the rails alone do impact mpg, even if only small. 3% doesn't sound like much (maybe 0.75 mpg) but that's around $50-60/year, which may make impact how to go with roof accessories. Also, other forums report high pitched whistling noise from rails alone.






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