How many kilometers should the spark plugs be replaced for Audi A4?
2 Answers
Audi A4L spark plug replacement cycle: Under normal maintenance conditions, replacement is recommended after driving 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine type. It is advisable to follow the user manual for specific guidance. You can refer to the following standards for maintenance replacement: Platinum spark plugs should be replaced at 40,000 kilometers, ordinary nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers. How spark plugs work: The ground electrode of the spark plug is connected to the metal shell, which is threaded into the engine block through the cylinder head. The insulator primarily serves to isolate the metal shell from the central electrode. The terminal nut is the part of the spark plug that contacts the high-voltage coil. When current passes through the terminal nut and the central electrode, it ionizes the medium between the central electrode and the ground electrode, generating a spark to ignite the air-fuel mixture in the cylinder.
I've been driving an Audi A4 for five years and have replaced the spark plugs twice. I remember the first replacement was at the dealership when the car reached 60,000 kilometers, and I felt the engine ignition became more responsive. Spark plugs are critical components for ignition, and generally, Audi A4 recommends replacing them every 60,000 to 100,000 kilometers, depending on the model year and engine type. If not replaced on time, fuel consumption may increase, and the engine might shake severely or even fail to start. Once, I delayed the replacement until 80,000 kilometers and noticed a significant drop in power. Now, I stick to the maintenance schedule. Regularly checking spark plugs also saves money because worn-out spark plugs can affect the entire fuel system. It's best to follow the maintenance manual and not delay the replacement too much.
