So sorry to hear of your dilemma Tony, mine is a 2012 and to date I've had no such problems. I'm wondering if it's specific to just certain years of manufacture?
Unfortunately not I think. I believe itís common to all FOR metal panels on all classes of cars painted in the same factory over all years.
If the ultraviolet light theory is correct I believe that itís just a matter of time and exposure till it catches up with you. How long that might take I've no idea, maybe never?
Itís a dilemma isnít it?
My advice for what itís worth.
If you donít have an MB Warranty take one out if you can, youíll need a full, unbroken, main dealer service history and itís not cheap, £1,700 per year for as long as it takes. Third party warranties generally cost around £900 but crucially will not cover paint problems.
If you canít do that Iíd seriously consider selling the car. I know itís drastic but do you want to pay for a respray at some point in the future?
Of course you could get it wrapped, which I very seriously considered in Solarbeam Yellow equivalent. From a reputable company including door reveals etc. I was quoted £2,500. However they would have had to Ēflat backĒ the existing bubbles at additional cost and I was worried that despite being protected from UV it may continue to bubble and thus put pimples in the wrap and then there was the cost of the wrap itself of course.
Or you can take a chance like I did (but I had an MB Warranty in my pocket). Although maybe I shouldnít speak too soon and tempt fate as my Warranty claim has yet to be approved in Germany, five weeks and waiting....