4 year 38000 mile service time

[GC001]

Time for a service on my 2012 S4.

Using the fixed price service calculator on Audis website, I was thinking this is what's necessary

Interim Service £199 (had insp serv last time)
A/C service £79
S-Tronic serv. £175
Brake fluid £59

Total £512.

I've been told there is no cambelt on the 3.0 TFSI engine and no service interval on the rear diff. Is this correct?

 

[Dippy]

Correct, that engine has internal chains for the camshafts. It has two belts, one for the supercharger and another for the auxiliaries. Both should be changed at some point - should state it somewhere in the manual.

The rear diff is supposed to be maintenance-free. Often in order to get such jobs done you need to go to an indie because official dealers simply refuse to accept that the work needs to be done. Is it a sports diff (i.e. LSD)? If so it should have an oil change at some point.

IIRC neither belts nor diff oil needs to be done at 38K, but the gearbox oil & filter definitely must be changed.