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Water in the trunk when opening fix

One of the biggest design flaws in the M3 has to be how when you open the trunk on a rainy day, water from the deck lid rolls on to the rear glass and into the trunk. Well I think (hope) I've just installed a simple fix.

Found a carbon fibre spoiler for the rear window that should defect the water to the sides and not into the trunk.
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El0n

Member
Sep 21, 2019
76
71
Mars
My car Sept 2019 build has some sort of lip and ditch type of thing to direct water around the trunk and onto the ground between the lights and the trunk. It’s raining heavily as I type this and when I parked in my garage to get the groceries I got literally 2 drops into the trunk itself. Perhaps Tesla has fixed this?
 
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afadeev

Member
Feb 28, 2019
942
1,168
NYC
My car Sept 2019 build has some sort of lip and ditch type of thing to direct water around the trunk and onto the ground between the lights and the trunk. It’s raining heavily as I type this and when I parked in my garage to get the groceries I got literally 2 drops into the trunk itself. Perhaps Tesla has fixed this?

No, they did not.

Nor is there an easy fix, since properly engineered cars have a much deeper rain gutter between the edge of the rear window and the trunk. Model 3's don't (and other Tesla's have had their own slew of water leak problems), and would require re-engineering, re-tooling, and production downtime to address this.

Since it doesn't rain much in Cali, they didn't, and likely wont any time soon.

a
 
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El0n

Member
Sep 21, 2019
76
71
Mars
Mine certainly has a “rain gutter” and I just came into a dry garage from a heavy downpour outside and witnessed a whole bunch of water fall into the rear windshield when the trunk was opened. None of that water subsequently dripped into the trunk.
 
Since it doesn't rain much in Cali, they didn't, and likely wont any time soon.

a
Agree with you on the rare rain but I live by the coast in real heavy fog and 80% of my mornings year round consist of a wet car and reliably as I open my trunk in the morning, as the water sheets off the trunk lid and onto the rear glass...it always nicely waterfalls into my trunk.
I guess things could be better if I had no protection on the car so water wouldn't run/sheet off panels and glass...haha.
 
My car Sept 2019 build has some sort of lip and ditch type of thing to direct water around the trunk and onto the ground between the lights and the trunk. It’s raining heavily as I type this and when I parked in my garage to get the groceries I got literally 2 drops into the trunk itself. Perhaps Tesla has fixed this?
I have got my car 4 days now, but it does not heve some kind of gutter. Strange...
 
That's cool. I'll have to try it.

I have a 6/19 build with gutter and lip, but all the rain drops do no matter slowly I open is speed down the windshield, then ramp over the gutter and into the trunk.

Only thing I can think of is that my ceramic coat and waxing of the windshield makes the water flow too fast? (Is that even possible?) Otherwise, the gutter is too narrowly designed IMO.
 
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