My experience with my 2009 escalade hybrid was the front MRC shocks wears out at about 80k miles and is not covered by the extended warranty. I replaced mine at 80k then at 160k, a $1000 parts and labor. The rear MRC with load leveling was still good at 195k miles. It was the air compressor that needed to be replaced at 180k miles. Other than that it was bulletproof. Surprisingly my fuel pump died at 180k miles. The CUE with less moving parts should be okay.