I have just had my E-class serviced at MB Kettering.
Fantastic service. Really polite chaps. Helpful and keen to solve my little 'gremlins'.
Examples. They isolated and fixed the following (free, in addition to a ASSYST "B" service.
1. Squeaky drivers seat
2. Rattle at idle in DRIVE (tip-auto)
3. Rattle on closing boot
4. Slight rattle in dash
5. Squeaky steering on lock-to-lock (235-rubber all round strains the power steering and the bush that goes through the firewall was rubbing apparently).
Anyway. All work done within 2 hours while I waited. They gave me a nice new A-class to play with in the mean time. And I went for a test drive in an SLK200K ...
All the work came to under 400 pounds including VAT and included additional work on the brakes and replacement brake fluid. Mobil 1 used (and leftovers given to me to keep as spare).
Just a happy customer.
Would suggest giving Colindale and Alan Day (London) a complete miss. They were hopeless, uninformed and unhelpful.
Forgot to mention. All additional work was classed under "warranty" ... with 12 months guarantee.
I know that they should cover this as a matter of course. But I felt that they were keen to solve even relatively 'minor' problems that other places have previously brushed off as being "part of the MB experience".