Yes I think the DPF uses more fuel pushing the exhaust gases through that filter. Also it then goes into a regeneration cycle to clear the filter of soot which again uses a lot of fuel.
I have accepted the higher than expected running costs (including more frequent oil changes) cos I just love it and still want to keep it long term.
I recently swapped to a low soot fuel and fuel ave on readout has increased to 25 mpg on display since that reset ( only 250 miles ago )
|