There was a strange noise at low speed accompanied by a vibration or shudder.

At low speed of around 50 km/h on light throttle, the vehicle developed an intermittent shudder followed by a high pitched squeak. Engine RPM fluctuated between 1000 and 1500 RPM at the same time. The problem lasted only a few seconds before clearing on its own, and applying more throttle reduced the symptoms. Initial impressions suggested a transmission or driveline related issue.