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Old May 8th, 2018, 22:27   #9
Quacker
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Originally Posted by anotherv60 View Post
Interesting - I noticed that when using pilot assist or ACC in eco- there is no "coasting" I wondered how much of an impact coasting could make!?
I believe that coasting in Eco mode is likely to actually use more fuel than when on the over-run with gears engaged in other modes. Not much but certainly not more economical.

Logically, when a modern petrol and Diesel engines are on the over-run, compression braking, no fuel whatsoever is injected. However when coasting, the engine must inject fuel to maintain idle speed, otherwise the engine would stop.
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