Every feature the Jetta base model contains comes standard on the more expensive variations, unless a more improved feature is provided instead.
Base model ($16,490) - 8 speaker CD stereo system with auxiliary input and mp3 compatible, air conditioning, 15 inch steel wheels. On the safety end there's front, side, and curtain airbags, as well as anti-lock brakes with electronic brake force distribution.
Jetta 2.5 ($18,750) - wheels are upgraded to 16 inch, and stability electronics are added.
Jetta 2.0T ($22,750) - wheels are upgraded to 17 inch alloy, the steering wheel gets wrapped in leather, and the trunk can be opened remotely.
Jetta GLI ($24,750) - all the upgraded features of the 2.0T with other sporty touches, such as alloy pedals and a leather shift knob.
Insurance Institute for Highway Safety ratings (IIHS)
Front crash test - Good
Side impact test - Good
National Highway Safety Traffic Association (NHTSA)
Front crash driver's side - 4 stars
Front crash passenger's side - 4 stars
Side crash front seat - 5 stars
Side crash rear seat - 5 stars