This is the response I got from MB UK to the question I posed about warranty should the new roof go the same way,
‘Having contacted your local retailer Mercedes-Benz of Southampton, I can confirm the relevant parts have been ordered for the repair to your Marco Polo roof. The Senior Service Manager has confirmed he has been in contact with you regarding the repair case, and the repair will be completed under your manufacturer's 3 year warranty.
As the roof is not part of the metal bodywork of the vehicle, this is not subject to the 30 year paintwork perforation warranty. The roof is a part supplied by Westfalia for the Marco Polo and therefore has the 3 year warranty only.
When repairs are required outside of the warranty period, the repairs and components benefit from a 2 year part warranty if the customer contributes towards the cost of the part. However, please be advised the warranty does not cover damage caused by external influences.
You may speak to your local retailer Mercedes Benz of Southampton who can confirm the warranty with you.
If you are unhappy with this final decision or feel this matter is unresolved, you can seek advice with a CTSI Certified Alternative Dispute Resolution provider, including The Motor Ombudsman who may be able to resolve your complaint in appropriate circumstances. Details can be found at
www.themotorombudsman.org, or alternatively their telephone number is 0345 241 3008 selecting option 1.
Kind regards’
I will be seeking clarification on a couple of the points made.