hlgonzalez1958
New member
My 2012 TDI Passat reports an estimate of 39 miles per gallon but when calculating the miles per gallons after a refill it comes out to ~25 miles/gallon.
I did a EGR valve cleaning, EGR differential pressure sensor and upstream oxygen sensor replacement. That took care of the engine light. But the mile/gallon still remain low. In addition, the diesel particle filter is reported as been done more frequently than expected. Which I think is related to the high diesel consumption and poor combustion. I haven't change the downstream oxygen sensor, but not flagged as defective.
What else can I check?
I did a EGR valve cleaning, EGR differential pressure sensor and upstream oxygen sensor replacement. That took care of the engine light. But the mile/gallon still remain low. In addition, the diesel particle filter is reported as been done more frequently than expected. Which I think is related to the high diesel consumption and poor combustion. I haven't change the downstream oxygen sensor, but not flagged as defective.
What else can I check?