I would recommend maintenance when you get it.....tranny fluid (which also tackles front axle) and rear diff fluid. This gives you the best chance of not having issues. I did mine early, not following a schedule. This coming year I will do the rear diff fluid again, at near 10k since last done. Have 29.5k miles at this point and no issues with trans or rear axle. One Q though, with 38k km on ODO, how are the brakes, done recently? Pads are not that expensive, but replacing rotors gets costly. I got a really great deal on OEM AMG pads/rotors a couple years back and just had everything replaced by the dealer, the labor was expensive. Had I bought everything from the dealer it likely would have cost me near $2k, not the $1300 in parts/labor in total I paid.