E350 estate strange MPG readings

sjhalstead

Member
Joined
Nov 16, 2013
Messages
49
Location
Kirkcudbright
Car
E 350 Estate
On a long trip today about 300 miles. Doing well showing 46.3 MPG but suddenly went from approx range of 230 miles to 98 miles range 96,94,88,80,75 etc fearing a fuel leak i pulled over noleak. Put 25 litres into tank all good about 250 miles then very up and down. Any ideas??
 

Monkeylegend

MB Enthusiast
Joined
May 18, 2011
Messages
1,792
Car
2011 E Class 220CDi, 2004 SL350
Did the fuel gauge drop at the same time?
 

tonysmb

Active Member
Joined
Oct 11, 2011
Messages
440
Location
South
Car
MB
Diesel or petrol. If the former, possibly regenerating the DPF? Uses more fuel for a short period of time, which might affect range calculations. Just hazarding a guess.
 
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sjhalstead

Member
Joined
Nov 16, 2013
Messages
49
Location
Kirkcudbright
Car
E 350 Estate
diesel started acting up after about 250 miles of mway and A roads
 

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