For me, the caps and rotors lasted about 40k miles.

I had the same trouble....running on 4 cyls., etc. I needed a new coil($) (replaced both) and a new ignition control module ($$$) and a new harness($$).

Good luck!

__________________
It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein


09 Jetta TDI
1985 300D