u/ImpressiveTwo1488

I have a mercedes c300 2015 (auto trans) which I rarely drive, like <500 miles every year. It has about 40k miles total on it.

Lately, I notice that sometimes it jerks hard when I accelerating over ~40mph. It feels like I hit a small bump or brake hard for 0.1s. And usually I don't get the same jerk again for the rest of that day.

Could you please suggest what could go wrong here? Thanks!