do usual in depth checks. buy a vehicle that was local and was a cpo. mine has 80k and checked out fine. i only drive it on weekends. my mechanic said this will be fine. if driving the usual 15k/yr, just be ready for the usual expensive repairs. i had lexus sc430. benz has more of that 1 piece porsche feel to it vs lexus and more fun to drive. also liked the classic long nose look like old jag xk and sc400. lots of stuff you don't need but work with the manuel and all techno stuff gets easier to use. of course more stuff means more possible problems. buying used is great way to beat the big depreciation. the more i play with it, the more i like it. no mpg but don't care. didn't buy it for mpg
v8 growl and power. handling and ease of driving. visibility,comfort,all the fun gadgits, model design and look, can't beat the seats. voice command.
usual stuff found in german cars..tons of little plastic stuff, cup holders don't hold more than a dixie cup safely and holders are fragile. just handle with care. body paint is ok, but porsche, lexus etc are better quality and finish/depth.