Had 5 series for years, got latest in October last year, a 520d with 150k miles on the clock.
Went as expected, 55 - 58 mpg on motorway and 36mpg on commute.
Then noticed in December through to March fuel consumption dropped to 26 on commute and 44 on motorway and quite powerless.
Now that it's warm again, June 2018, the fuel consumption is back up to original good levels.
Has anyone experience of this? Is there something wrong?
It's never missed a beat and just done a one hop 250 journey at 70mph throughout and 56mpg.
Any thoughts?
Thanks in advance.
Went as expected, 55 - 58 mpg on motorway and 36mpg on commute.
Then noticed in December through to March fuel consumption dropped to 26 on commute and 44 on motorway and quite powerless.
Now that it's warm again, June 2018, the fuel consumption is back up to original good levels.
Has anyone experience of this? Is there something wrong?
It's never missed a beat and just done a one hop 250 journey at 70mph throughout and 56mpg.
Any thoughts?
Thanks in advance.