Which is the most effective sites for selling a car,

Mercdriver

BOWFER said:

Facebook marketplace (the little house logo at the bottom of your face book screen)
Sold two cars there over past 2 months, it's free too.
Do a good advert, the amount of people who do crap ads on FB marketplace is baffling.
I always list every little good things about the cars. really 'sell' them,

Be careful about listing 'good' things as you can find yourself in difficulty if the buyer has an issue with them down the line.  If you describe something as having a certain quality then you are effectively giving warranty to it.  Not a road I would go down when selling something privately.  Risks taking it out of caveat emptor territory...

Ectophile

I have seen some pretty dodgy ads on Facebook.  I was looking for a car last year, and saw two adverts for the model I wanted, one for an automatic and one for a manual.  But they both had exactly the same photo!  I didn't bother to go and look at either.

pinkshoes

I sold my last two cars on Facebook with no issues.

You do get quite a few time wasters though. I priced it at £1500 for a quick sale and got loads of messages saying £1000 and I will collect now. Had plenty of genuine buyers though and sold for £1500.

Next time I will inflate the price as people expect to haggle!