Protection racket

I am taking delivery of a new car at the end of December and I am considering having the Supagard Plus treatment by the supplying dealer. Would you please advise if you think the treatment is beneficial and, if so, how much would be a reasonable charge. I am being offered £349 (reduced from £400) for treating a BMW520 Saloon, which strikes me as way over the top

Asked on 13 February 2010 by P.F., Yateley

Answered by Honest John
It’s of some benefit to the car’s paintwork but of more benefit to the salesman’s commission than it will be to you. The best treatment is professionally applied by Glare UK. Lasts 5 years. Costs around £500. That passed Tim Shaw's 5th Gear torture test. More at www.glareuk.com
Dear Honest John,

Please help me choose my next car. I would like it to have:
    Select a few terms below
Similar questions
Many thanks for your suggestion of a Swift, Agila or i10 for an automatic. We've bought a Swift and are picking up on Thursday. We've been offered £299 gap insurance (which we'll get independently after...
Should I get the optional Dynamic Handling Package for the C-Class Estate? I'm in the process of buying the latest model - working in NZ but will be back home in the UK for delivery.
When considering buying a new Skoda Octavia 1.4TSI, I asked two local dealerships about the advisability of ordering the electronic stability programme (ESP) as a factory-fitted extra. Both were negative,...