Originally Posted by jimvw57
I have replaced a lot of plugs, and other than the heads of the bolts getting rusty, Never had a problem with breaking a bolt. I have replaced them with SS ones just to avoid the rust (gotta love Minnesota winters)
I am 2 for 2 with the bolt heads snapping off during spark plug changes, and I am a bit hesitant to change the plugs in my other two smart cars. If your not too busy I can let you remove the bolts on the next 2, maybe you will have better luck than me.