Coil pack failures are not common.

Most likely, the plug wires are aged. Mine did the same thing, and fresh wires did the trick.

Bad plug wires will cause other issues, such as plug fouling and O2 sensor failure (which occurred as a result of the bad wires).

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car