Hi Vanessa,
If yours is a PD it is the current model. Most of the latest changes are only cosmetic. Nothing wrong with what you have got.
You'll lose heaps unless you can get top dollar selling it privately which is extremely difficult. They'll only we take fgive safety you what they think they can sell it leow.sor granted ns $3000 or measure and less any allowance for things like new tyres, rego, cleaning etc.. depending on what your car needs to be saleable.
Safety features are nice, but most of us have survived a long time despite being carted to school without seatbelts and other life protection systems.