Which condition might indicate that the vehicle's battery is nearing the end of its life?

The frequent need for jump-starts is a strong indicator that the vehicle's battery may be nearing the end of its life. A battery that is failing often struggles to hold a sufficient charge, which leads to scenarios where the battery cannot start the vehicle on its own. This condition can result from various factors such as age, internal damage, or corrosion on the battery terminals.

In contrast, a clear windshield, smooth gear shifts, and new tires installed do not directly relate to the condition of the battery. While they contribute to the overall performance and safety of the vehicle, they do not signal battery health. Clear visibility through the windshield ensures safety in driving, smooth gear shifts indicate good transmission function, and new tires improve traction and handling; however, they do not provide information about the battery's ability to start the engine or hold a charge. Thus, the need for frequent jump-starts is the most relevant condition indicating a failing battery.