Where is the sunroof drain hole located on the BMW 320?
2 Answers
The sunroof drain holes on the BMW 320 are generally located inside the front wheel liners at the front and inside the interior trim panel near the trunk at the rear. Relevant information about the BMW 3 Series is as follows: 1. Exterior: The original sporty style of the 3 Series has been further retained. The polygonal kidney grille and the new Angel Eye headlights feature an additional recess in the middle below the headlights, with the bumper lines extending into the recess to connect with the headlights. From the side profile, the new car remains very sleek, with the rear-wheel-drive setup resulting in a long hood and short rear end, complemented by a continuous waistline and the new Hofmeister kink. The rear of the new car also follows the family design, with L-shaped elongated taillights, a flat rear end, and dual-exit exhausts. The new BMW 320/330 models feature a dual-exhaust layout, with the 330 version additionally sporting a carbon fiber spoiler on the trunk lid. 2. Interior: The overall interior design of the new BMW 320/330 series closely resembles that of the current BMW 5 Series and BMW 7 Series. It is equipped with numerous high-tech features, including a multifunction leather steering wheel, a 12.3-inch full LCD instrument cluster, parking assist system, electric front seat adjustment with memory function for the driver's seat, Intelligent Connectivity Cockpit (including BMW Navigation System, BMW Intelligent Personal Assistant, Remote Software Upgrade, etc.), a 10.25-inch central touchscreen, advanced three-zone automatic climate control, rear independent air conditioning, HUD head-up display, wireless phone charging, and more. 3. Powertrain: Both the 320i/320Li and 330i/330Li are powered by the B48 series 2.0T turbocharged engine, but with different power outputs. The 320i delivers a maximum power of 115KW (156 horsepower), while the 330i offers 190KW (258 horsepower). Both models are paired with an 8AT transmission.
I've been driving a BMW 320 for over a decade and am very familiar with the location of the sunroof drain holes. These holes are typically found at the four corners of the sunroof frame, with each corner having a small hole connected to a drain tube. The tubes run down the pillars and exit near the wheel arches, usually around the front A-pillar or rear C-pillar area. If you neglect cleaning them, accumulated rainwater can backflow into the cabin, soaking the headliner and potentially damaging seats and electronic components—that's when real trouble starts. I remember a few years ago when my car leaked because these holes were clogged with leaves, costing me thousands in repairs. Now, I check them every spring, using a thin wire or compressed air to keep the openings clear. The holes aren't hard to find—just open the sunroof to see the corner openings, and feel around the wheel arches for the small tubes.
