What symptoms are likely to indicate a problem with an automotive ignition system?

The symptoms of hard starting, misfiring, or stalling are directly associated with issues in the ignition system of an automotive vehicle. The ignition system is responsible for generating the spark that ignites the air-fuel mixture in the engine's combustion chamber. If there is a malfunction within this system—such as a faulty spark plug, ignition coil, or distributor—it can lead to inadequate spark or no spark at all.

This inadequate ignition can result in the engine struggling to start (hard starting), inconsistently firing during operation (misfiring), or even completely shutting off while running (stalling). These symptoms indicate that the ignition system is unable to perform its crucial function of igniting the fuel, making them clear indicators of potential ignition system problems.

The other options do not specifically relate to the ignition system. Low oil pressure is associated with engine lubrication issues, excessive tire wear is typically tied to alignment or suspension problems, and an overheating engine points towards cooling system failures. Thus, the symptoms highlighted in the correct answer are uniquely indicative of ignition system troubles.