Software upgrade causing high fuel consumption?

[UrbanFlow]

Hi all,

3 weeks ago my 2007 X5 (3.0L Diesel) went into an official dealer (Vines of Guildford) for a software upgrade.
Since the upgrade I seem to be experiencing much higher diesel consumption. It's literally drinking the stuff!

On board computer shows that consumption is down from an average of 25mpg to just 20mpg - and the journeys are the same.

Any ideas if the upgrade could have caused it (does it remap the engine?) or how improve consumption again?

Best

UF

[Steamyrotter]

Anything can (and usually does) happen with these!!

I would suggest contacting the dealer that did it and explain the situation to see if they have come across that before??


I would also try disconnecting the battery for a few mins, and discharging the car.
Reconnect and try again!!
Sounds simply silly but has been known to sort many a problem out before!!

[john_o]

Call the dealer and discuss. How many miles have you done?  Do you have carly app and dongle?

Fuel consumption is high during regen. I wonder if for some reason your car is regening now but wasnt before?

Sent from my SM-N910F using Tapatalk

[X5Sport]

Regens should only happen every 300 miles or so.