I've got a 2011 Panamera Turbo that I purchased last October. My check engine light came on and my independent said I could swing by and they would read the code for me (they are booked three weeks out). Turns out it was a misfire on #2. They cleared the code and I haven't had any issues since. That being said, with 45K miles, the car is overdue for plugs. I thought I might as well replace the coils while I am in there. Does anyone have suggestions on what plugs to get and where to source the coils?

 

Go to Pelican and look up your car. They'll give you the correct plugs as well as a few different options. I wouldn't replace the coils yet. I just did my plugs at 52k and left the coils in. They are so easy to get to and Porsche doesn't really have them on any sort of replacement interval. Smart money would replace them at 60k - but some make it to 100k without issue. The rear plugs can be a bugger to get to, but far from impossible.

It is suggested to get a new nut and bolt for the upper engine strut. They are aluminum. I did not bother. They have such low torque on them that it wasn't something I elected to worry about.

 

I would just do plugs, if you must do plugs and coils at the same time visit fcpeuro, they have very good prices and shipping, they also stock the oem part, and the oem part number direct through the manufacture and it’s a lot cheaper then getting it in the manufacture packing instead of having the Porsche sticker on it.

 

I'd go ahead and do plugs. On the turbos only the 2 against the firewall are hard to reach. For the coils, I'd Idid those two regardless when doing the plugs since it's the same amount of work as I was already there. The others are so easily reached you could do them as they popup and have an issue. #2 cylinder however is not against the firewall so that is probably 3.

With 45K I doubt it's spark plugs alone causing the misfire code. Probably a coil failing due to age and heat.

 

A proper code reader should tell you which cylinder is misfiring. Then testing the coil is a rather simple process. Porsche says 30k on plugs for the Turbo.

 

Do the coils too as they are known to fail.

 

I did all my plugs and coils last month.
Two coils were cracked. The OEM coil packs were stamped Beru. (ZSE 042). Plugs are Bosch.
The two rearmost cylinders are a bit awkward to get to but not difficult.