[BMW F22]

Looked at Audi and Porsche and noticed that their SUV's have holes at the bottom of the engine compartment. They were pretty big and made me think of mud, road debris, rodents, etc. could get in. I thought all vehicles are sealed up? Anyone knows why this is? Tried googling and couldn't find anything.

[seedyrom]

Jackie_Chan_WTF.jpg

[BMW F22]

No one knows the answer?

[pgviper]

Guess... Need to ensure water can escape if it gets into your engine compartment. Whenever it can pool up in a certain location, the result is rust / corrosion.

[seedyrom]

Originally Posted by BMW F22

No one knows the answer?

I thought this was a joke thread.

You know, where someone asks a question so stupid, it’s obviously a troll attempt to get attention

[Red Bread]

Originally Posted by seedyrom

I thought this was a joke thread.

You know, where someone asks a question so stupid, it’s obviously a troll attempt to get attention

Are we going with it not being just that?

[rcracin]

aerodynamics for mad downforce.

[Uber Commuter]

How do you know if someone does nay maintenance on their own car?

Originally Posted by BMW F22

I thought all vehicles are sealed up?

Well, that's one way...

[BMW F22]

Mainly owned BMW's for the past 15 years or so under warranty so I never did any maintenance on my own other than topping off oil. Didn't notice any holes in the engine compartment of any of the BMW's until I looked at Audi and Porsche lately. It was pretty apparent and not knowing what it was, figured I would ask. Laugh if you must but I seriously didn't know.

[1MOREMOD]

Don't all cars have cf under tray? If you've ever been near a car you would know what the underside looks like. It's not a sealed box?

[WingZeroX5]

Afterburners

[BMW F22]

Originally Posted by 1MOREMOD

Don't all cars have cf under tray? If you've ever been near a car you would know what the underside looks like. It's not a sealed box?

I remember reading long ago that BMW seals their bottom side for aerodynamic compared to regular cars that would let things hang out and not as flush. Guess I just assumed that everything was sealed up. Never saw through to the other side of an engine compartment so I never noticed. :

[Yessir]

I'll give you a serious response. It is sealed up partially but cannot be fully sealed for aerodynamic reasons and also things get hot under the hood. Engines, radiators and oil coolers need to dissipate that hot air.

[BMW F22]

Originally Posted by Yessir

I'll give you a serious response. It is sealed up partially but cannot be fully sealed for aerodynamic reasons and also things get hot under the hood. Engines, radiators and oil coolers need to dissipate that hot air.

Gotcha. Thank you for the response- appreciate it!

[cxp213]

If you seal it up, the air that enters through the front grille has nowhere to escape, which can even act as a 'parachute.' Air is routed in specific ways (if the Mfr can help it, through heat exchangers) to aid in cooling as well. Just adding to Yessir's response.

I'm sure there are other reasons, like easier access for maintenance or inspections, clearance, etc.