Member Since: 11 Oct 2016
Location: Leicester
Posts: 17
D4 fuel usage when idling?
Does anyone know how many litres per hour the D4 uses when idling?
A couple of weeks back I was parked up for about 4 hours with the engine running to keep warm (it was in the snow we had at the beginning of December!), but when I next filled up the real calculated MPG (not from the onboard computer) had dropped from the expected 23-24 to 19.
Jim
13th Dec 2021 8:59 am
Pedros
Member Since: 25 Jun 2011
Location: Cumbria
Posts: 454
No idea. But the fuel does (I believe) cut off on the overdrive (ie when not using the accelerator when moving). So it could it be cheaper to just drive around downhill? Doubt it really though. I guess it must use a bit, else what's the point of stop/start?
13th Dec 2021 2:56 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787
From a dim and distant memory ISTR a “normal” small engined car uses ~1/2l per hour so I worked on the premiss of 1l/h if I got stuck on the Mway or A9 in snow. Basically always tank up in Perth so plenty of running available until the road gets cleared.
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