Last weekend, opportunity presented itself.
Both my wife and I would be doing the same drive at the same time. She, in her 3LR, me in my P3D.
So, I arranged to follow her and match speed (helped by AP).
The experiment was not perfectly controlled:
So, for fifty uphill miles, most, but not all, on freeway at 72-74 mph, reported consumption was:
Both my wife and I would be doing the same drive at the same time. She, in her 3LR, me in my P3D.
So, I arranged to follow her and match speed (helped by AP).
The experiment was not perfectly controlled:
As the tail car, the P3D benefitted from steady-state drafting (3 notch TACC following distance). The lead car was able to maintain this same distance behind other traffic most of the way, but not at all times. Net benefit (slight) to P3D.
The route was moderately uphill (+900 feet). Net benefit (slight) to 3LR (lighter weight).
Nevertheless, I figured that folks might be interested in the results, even if flawed.The route was moderately uphill (+900 feet). Net benefit (slight) to 3LR (lighter weight).
So, for fifty uphill miles, most, but not all, on freeway at 72-74 mph, reported consumption was:
3LR -- 268 Wh/mi
P3D -- 281 Wh/mi
Difference = Roughly 5%P3D -- 281 Wh/mi
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