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      08-27-2020, 01:42 PM   #1
Mile muncher
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Drives: Merc
Join Date: Aug 2020
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2021 Mild Hybrid 40i gets worse EPA highway fuel economy? And other questions..

Hello all, new forum member here.

I am in the market for a g05 40i and happened to notice that the 2021s are rated 21/25/23 combined mpg compared to 20/26/22 combined for the 2020s. Curiously, the X7 40i gets 19/24/21 this year compared to 20/25/22 for the 2020. It seems strange that highway MPG would be reduced, let alone unimproved, considering the coasting function of the 48V system. Any ideas as to why this might be?

Second, I am curious as to whether braking feel in the 2021s would be compromised given the regenerative braking system?

Finally, I am considering the two-axle air suspension and have read the multitude of helpful posts on here comparing it with other suspension options. Specifically, though, I am wondering whether it improves the secondary ride quality of the X5 (i.e. comfort over smaller, sharper bumps, potholes, and broken sections of road). This would probably relate more to bushing compliance than the air springs themselves. I am unsure as to whether two-axle air has improved bushing/damper characteristics relative to the standard x-line suspension.

Cheers!
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