Help! EML +High fuel cosumption

[loteee]

hello everyone,

i recently purchased an 08/07 production E70 with N62B48 powerplant. a couple of days ago the EML lit up so took car to the dealer to diagnose and ascertain the cause of the problem. was told i had a bad solenoid. replace it and took car away only for the EML to lit up again! dealer insist i change all 4 engine solenoids.

i am also currently getting 6mpg combined, a rough idling and terrible transmission shifts,

any suggestions on procedures to follow to kill the EML, improve fuel economy and transmission drama would be appreciated please.