The extended warranty covers control arm shafts and bushings.
That's good. Probably $5k well spent on that warranty.
That said, I probably paid about $3,500 more for my LR4 when I bought in in January 2016 than I would have a non-CPO LR4 in the same condition and miles, and, until I had them replace the timing chain and guides this past December right before the warranty ran out, I had only amassed around $1,500 - $2,000 in repairs under warranty.
The timing chain job (and other things they replaced at the same time) was probably around $6k in work and parts, though, so the warranty proved to be a wise choice.
Since yours is a '13, you hopefully won't have the same timing chain issues.