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JonM
Member Since: 30 Jun 2016
Location: North Yorkshire
Posts: 598
How Accurate is Your Fuel Economy Display?
For some reason, car manufacturers always seem to make the onboard computer display a better fuel economy figure than real-life.
I'm currently estimating that the D5 is showing a figure about 10% better than real life. Is that typical of what other people are seeing?
On the D4, I used my IID tool to adjust the display to be much closer to reality but that facility isn't available for the D5 yet.
MY2022 D5 HSE D300 - with extra nice bits added
MY2019 D5 HSE 3.0 SDV6 - sold to a dealer for a crazy price!
Trevorb1
Member Since: 08 Jan 2018
Location: Nuneaton
Posts: 284
The trip computer on my 18my V6d SE on 19 inch wheels consistently overreads by 15%, been calculated on most refills over last 12000 miles.
24MY D300 Dynamic SE, Fuji White, Deployable Towbar, full size spare.
Gone 20MY SDV6 Landmark, Indus Silver, Deployable Towbar, 360 Cameras
DSL
Member Since: 23 Jun 2016
Location: No longer in the D4 :-(
Posts: 134
Road Trip app is yer friend.
Click image to enlarge
And yes, that 37.8mpg was for real. Now I’m afraid,
very afraid!
Click image to enlarge
Stenny
Member Since: 28 Jun 2017
Location: Stenhousemuir
Posts: 3
My trip computer is also way out, I also use the Road Trip app, you be surprised at the difference.
IndusD4
Member Since: 28 Jan 2018
Location: Sydney
Posts: 698
I go by the fuel gauge, If it starts to complain of getting empty, I fill it up. No idea what the fuel consumption is, other than compared to the D4 it just keeps going. for an extra 100km on a tank. So it seems.
2016 D4 TDV6
IIDTool BT
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