3 of my shocks were replaced around the 40k mile mark (under warranty due to visible leaks, i believe), the other is still original at 73k miles and feels fine to me, but could well be completely shot and I'm just used to it. I did have a broken spring 18 months ago, on the corner with the original shock, not sure if that's a sign?
I'll be asking for them to be looked at closely during next service in August, hoping to have an excuse to upgrade them...
Even when shocks are in perfect condition, this is not a car with a lovely cosseting ride quality, it's niggly and a bit crashy in sport, and wallowy and floaty in comfort. Neither is great, compared to what I've experienced in other cars that are simultaneously firmer and more comfortable.