Group... my '17 991.2 C2S is up for maintenance according to the letter I received from Porsche. "6 year maintenance".
Car has had all the regular maintenance as far as I know (2nd owner since '21) and has 23K miles on it.

What's involved in this? Worth it?

 

I would send you the Porsche Maintenance checklist, but it seems that you have private messages disabled.

Good luck.

 

You can post said checklist in the thread, for what it's worth.

That said, it's been discussed quite a bit in the forum. It's important to note that miles and age are taken into account for the majority of items. The PDCC resetvoir, serp belt, and PDK fluid are the big 60k/6yr items, on top of the 2yr items (brake fluid, air filters) and 3yr items (spark plugs).

Lots of debate on whether or not spark plugs should be replaced on a time interval. Anecdotal evidence supports both sides -- make your own decision there.

 

This year was oil change only for my 2017 C2 but the dealer also wanted to replace the drive belt due to time. Car has less than 20K miles so I told them it can wait until next years major service. Not paying to pull the bumper just for that one item.

 

This is what I put together for the maintenance schedule for my C4S. Am I missing anything?

(1yr) (10K) Oil and Filter Change
(2yr) (20K) HVAC Filters - Pre-Filter and Particle Filter (not sure on this one)
(3yr) (30K) Spark Plugs - Turbo Cars
(3yr) (30K) Air Filter (I moved this to 3yr/30K since the bumper is already off)
(6yr) (60K) All-Wheel Drive Controller Oil Change
(6yr) (60K) Drive Belt Replacement
(6yr) (60K) PDCC Bottle Replacement
(12 yr) (120K) All-wheel Final Drive Oil Change
(12 yr) (120K) PDK Transmission Change Clutch Oil
(12 yr) (120K) PDK Transmission Change Oil