Audi A4 intermittent starting issue with rough idle requiring gas to start on Audi A4

Some Audi A4 owners report experiencing intermittent starting issues accompanied by rough idle that requires gas to start. These problems may stem from an aging battery that struggles to provide sufficient voltage for a quick start. Additionally, some owners find that a faulty fuel pump can lead to starting difficulties, particularly when the engine is warm, as it may not deliver adequate fuel to the engine. A malfunctioning fuel pressure sensor can also contribute to these starting issues without triggering a check engine light, affecting the necessary fuel pressure for smooth engine operation. Furthermore, neglecting regular maintenance tasks, such as cleaning the throttle body, can result in rough idle, power loss, and misfires. It is recommended for owners to check battery health, inspect the fuel pump and fuel pressure sensor, and adhere to proper maintenance routines to resolve these concerns and ensure optimal vehicle performance.