What might indicate a problem with the vehicle’s transmission?

Difficulty in shifting gears and unusual noises are clear indicators of a problem with the vehicle’s transmission. A properly functioning transmission allows seamless gear changes, so any struggle or obstruction in shifting can suggest that the internal components are worn, damaged, or malfunctioning. Additionally, unusual noises—such as grinding, clunking, or whining—often point to issues like low fluid levels, gear misalignment, or wear on the transmission's internal parts. Recognizing these symptoms is critical for timely diagnosis and maintenance, helping to prevent further damage to the vehicle.

Improved fuel efficiency, development of a smoother ride, and increased engine power do not directly relate to the transmission's performance. In fact, they could suggest that the vehicle is functioning optimally rather than indicating a problem. Thus, these options do not adequately reflect potential transmission issues.