John K
Well-known member
- First Name
- John
- Joined
- Jan 2, 2020
- Threads
- 41
- Messages
- 2,803
- Reaction score
- 5,768
- Location
- Los Angeles
- Vehicles
- Volt, CT reserve day 2
Easier to measure the delta on tonneau cover open vs close at speed in efficient vehicles.i wouldn’t consider it good. Average 15 unloaded.
Still better fuel efficiency compared to my Avalanche.
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