Loss of MPG and performance after SRPC1921

2015 Mercedes Benz M Class 350 bluets
Car: Mercedes Benz M Class
Year: 2015
Variant: 350 bluets
Categories: Engine & DrivetrainRunning Rough, Starting & Power LossElectrics, ECU, Warnings & Lights
Hi there

Many owners of the W166 MERCEDES who have had the recall SRPC1921 are experiencing issues. Loss of MPG, loss of performance, running rich, rough idle and hesitant when cold.

Have reported back to Mercedes and yet they are to respond. Please can you help us? I have been on a lot of W166 forums and all are experiencing the same issues since the recall.

Please please help us.
Problem added: Mar 14, 2020 (4 years ago)
Cant help you with that , I'm afraid . You will have to take it up with Mercedes as the software recall is emissions related which ties in with what you and others are experiencing .
Answered Mar 14, 2020 (4 years ago)

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