It's not too loaded really. Mostly the base features with a bit better sound system and the keyless and remote start setup.
I'll post below the advertisement from the car lot. It's kind of silly how they listed some of the stuff.
"Come on down today and get into this outstanding 2013 Dodge Challenger! It is nicely equipped with features such as 18" x 7.5" Aluminum Wheels, 4-Wheel Disc Brakes, 6 Speakers, ABS brakes, Air Conditioning, AM/FM radio, Anti-Lock Brakes, Anti-whiplash front head restraints, Audio Jack Input for Mobile Devices, Automatic temperature control, Brake assist, Bumpers: body-color, CD player, Cloth Low-Back Bucket Seats, Delay-off headlights, Driver door bin, Driver vanity mirror, Dual front impact airbags, Dual front side impact airbags, Electronic Stability Control, Four wheel independent suspension, Front anti-roll bar, Front Bucket Seats, Front Center Armrest, Front reading lights, Illuminated entry, Leather Shift Knob, Low tire pressure warning, MP3 decoder, Overhead airbag, Overhead console, Panic alarm, Passenger door bin, Passenger vanity mirror, Power door mirrors, Power driver seat, Power steering, Power windows, Radio: Uconnect 130 AM/FM/CD/MP3, Rear anti-roll bar, Rear seat center armrest, Rear window defroster, Remote keyless entry, Speed control, Speed-sensing steering, Split folding rear seat, Steering wheel mounted audio controls, Tachometer, Telescoping steering wheel, Tilt steering wheel, Traction control, Trip computer, and Variably intermittent wipers. This wonderful Dodge is one of the most sought after used vehicles on the market because it NEVER lets owners down."
Most of the stuff they list there is pretty much standard on most newer cars. I like how they are making a big deal out of things like rear seat center armrest... ooh man that sold me. Trip computer.. has anyone ever used one of those?
My Scion had a bit better stereo in it in a way, but It didn't have as good of speakers setup.