Just changed my spark plugs on my 2000 S430. Was a complete ***** took me and my brother damn near 4 hours! On the bank at the passenger side, the heads have sharp protrusions which I think is deliberate from mb b/c they don't want you to do the work yourself. Replaced all a6 plugs and wires below is a pic. I take it the old ones are 10 years old causing two to break off from the wire. I had to be ingenious to remove them but the car is now an animal once again!

I also got an optima yellow top battery b/c it was long overdue.

Later in the week we're gonna change the front sway bar!

Yep, changing the plugs on a M113 is a pain in the @ss, esp. if you don't have the right tools.
I think it took me the same amount when I changed the plugs on my ML430 some years ago.

The 16 plugs in my SL55 was an adventure as well. I think my Ferrari's are more service friendly!

Vmaxx, What kind of wires did you use? OEM?

I noticed that you went with Bosch Platinum (2) as replacements. Are they better than the OEM on MB. I have a 2005 S500, and what type of wires, OEM? I have used the Bosch on my other cars and they work fine but not on my MB. Let me know how they work.

no, i went with bremi. you can tell they are a little cheaper in quality than oem but this car is not the family racecar. lol

Cool, just bought me a set of Magnecor...

as soon as we got the work done my brother and i took it for a spin. she sounds as raucous as a 5.0, the pull is just about the same as oem when we got the car in 2005. right now the car feels enthusiastic compared to the 10 year old plugs and wires.

i got bosch platinum +2 plugs and bremi (sti) aftermarket wires.

I just did my plugs about a week ago and I agree it is a pain in the @ss. I have an 04 S430 with 82k miles and most of the plugs were fried. I didn't replace wires but they seemed okay. I don't recommend for anyone to wait until 100k for plugs in my opinion. The car seems much smoother and responsive.

My plugs were done at 115k miles, they were still OK for the age/time but I'm glad I did it!

getting ready to do mine in a couple of weeks. i am bad my car has 130K and never had them replaced. Does the plugs really make a big difference? at parts.com some wires were 150 while others are 350. and the plugs vary from 3 bucks to 17. Im not racing my car so dont want to waste the money.

also any tips that could same me some time would be appericated
thanks