[gpitts]

This is a weird one, but I have noticed on two occasions that my wife's 2012 F10 550xi has had a small (18" dia, approx) pool of liquid on the garage floow underneath the trunk area. The pooling tends to collect directly under the passenger side muffler. The liquid feels a little tacky - not like water, but not like oil. No discernable smell (and I don't want to taste it ).

Anyone else seen this, or ideas on what this might be? I live in Portland, OR and even though we get a fair amount of rain here both instances occurred on dry days where there was no opportunity for water to collect underneath the car.

[martin mustang]

Get this checked if I am not wrong the fuel tank is around the area in question, behind the rear passenger seats, maybe to do with the fuel pump.

[valcor535]

Mine does that too, I have checked under the car and is condensation; it comes from the back of the exhaust silencer on the passanger side... is not fuel, is not oil, is water condensation at least on mine....

[The X Men]

gpitts, if you wife take a lot of short trips, that could just be condensation in the exhuast system.

[Fetcho]

Sure does sound like normal exhaust condensation. I get that on mine too and since there isn't a smell, that eliminates everything else I can think of.

As Xmen mentioned, it should only happen on short trips.

[gpitts]

Many thanks for the replies! I'll ask her about the trip duration, but her job is only about 6-7 miles away from home, so you probably nailed it.

Neither her previous car (2.8L Z4) or my current car (E92 M3) has exhibited this issue, so I'm guessing this is a design "feature" of the F10.