I had the privilege of having a new Jetta in my driveway today, and since the weather was decent, I decided to take some pics for you guys.
The new Jetta has extensive underbody aero treatments, and makes a very good guide for those of us with lesser vehicles.
A- Front wheel/wheel well spoiler. This piece curves in toward the center of the vehicle. It spoils the air headed toward the tire, and diverts air away from the wheel well and front suspension.
B- Rear wheel well spoiler. This small, wide spoiler helps the air 'skip' over the rear wheel well and suspension.
C- This is the bottom of the front bumper. It is completely flush and tucks all the way back to the front belly pan.
D- Rear wheel spoiler. Could be much larger, but is still probably effective.
E- Dimpled panels. These panels run nearly the length of the wheel base, and cover everything except the exhaust piping.
F- Rear bumper tucks in completely flush to rear undercarriage.
G- Again more dimpled panels. Only fitted to one side due to the muffler.
charlesB 
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