Wrecker or private sale

[TonyTA]

It's time to say goodbye to our beloved Mk5 Golf Comforline. My wife and I bought it new in 2005 as our first car together and it's been a great unit. Wife want's to get a new car though, so being the oldest, it needs to go.

Red book says Private Price Guide is $1,800 - $4,100 for the South African made version; ours was one of the lucky ones made in Germany: redbook.com.au
Mechanically it's in good nick (mostly dealer serviced with 15 years of paperwork in the logbook) but there are marks on the bumpers, some damage the front bumper and the roof lining is falling down (my youngest thought tugging on liner would be a "fun" thing to do a few years back...) so putting on Gumtree would probably see me waste a lot of time.

Question is, what would be the best way to sell it to get max value?
Should I simply take it to a wrecker?
Should I try for a minimum trade when we buy new car?
Other ideas?

Suggestions most appreciated.