Do I really need to pay £350 for aftermarket paint protection with my new car?

I am buying a new car and all dealers want to sell me aftermarket paint protection at what seems a substantial amount - often around £350. Whereas I do not mind paying for the service of having my new car professionally polished, and prepared inside and out, I am wary of the following. Does it provide any worthwhile protection to exterior/interior in the short and long term? Also, are there any special processes involved here? Does a franchised dealer have the necessary equipment/experienced employees/time to do this? Are the warranties of any use?

Asked on 24 June 2010 by Farm Hand

Answered by Honest John
It's only worth having if there is a no-quibble 5-year guarantee involving no further expense on your part. Otherwise do it yourself for £20 with Autoglym Extra Gloss Protection every six months. A £20 bottle will last 2 years.
Similar questions
I have a 2011 Peugeot 508 SW. The paint work is still in good condition and has a fair amount of shine still. I'd really like to enhance the shine, bringing it as close as I could back to its original...
I have a light silver BMW. It's parked on the street and the neighbourhood kids seem magnetically attracted to placing hands on it as do passers-by stopping to talk to each other, leaning arm prints on...
I'm due to pick up a new Honda Civic within the next fortnight and the dealer has asked that I consider treating the paintwork and fabric with Supaguard. As the car is being purchased under the Motability...

Value my car