05-06-2023, 07:55 AM | #1 |
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Drives: ‘16 M235ix
Join Date: Aug 2021
Location: East Orange,NJ
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MPG Dropped Substantially
i have a ‘m235i xdrive DCT with 90k miles that recently is showing much worse mpg (before 32/23, now 20/15). There are no fault codes present based on both the dealer and bimmerlink diagnostics. i’ve ran a can of 44k, changed the spark plugs and had the dealer perform fuel injector service whatever that is (i probably wasted my money). I think the worse mpg is due to bad o2 sensors but wouldn’t that throw a code or trip a engine light? It is performing fine, except for the lower mpg. Appreciate any feedback. Thank you.
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05-10-2023, 08:47 AM | #3 |
Major General
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Rep 5,582
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After a highway run coast to a stop / no brakes / use an infrared - red : laser : inexpensive gun and shoot temps of caliper and disks.
Making sure you don’t have dragging brakes. You can even shoot temps of f&r diff - but not sure how that is diagnosed |
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