How often should the Q5 spark plugs be replaced?
2 Answers
Q5 spark plugs should be replaced approximately every 30,000 kilometers. It is recommended to follow the owner's manual for replacement. You can refer to the following maintenance standards: platinum spark plugs should be replaced every 40,000 kilometers, ordinary nickel alloy spark plugs every 20,000 kilometers, and iridium spark plugs every 60,000 to 80,000 kilometers. What are the effects of damaged spark plugs: If the spark plugs are damaged, it can directly cause issues such as leakage in the vehicle's ignition system, increased fuel consumption, reduced power, and most importantly, difficulty in ignition, affecting the normal operation of the vehicle. Severe erosion of the spark plugs, such as pitting at the top, damage, or melted and eroded electrodes, indicates that the spark plugs are damaged and should be replaced. Steps to replace spark plugs: Open the hood, lift the plastic cover of the engine, and remove the high-voltage distributor wires. Mark each cylinder's position to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. While removing them, check for any external debris like leaves or dust and ensure they are cleaned thoroughly. Insert the new spark plugs into the spark plug holes, hand-tighten them a few turns, and then use the socket to tighten them further. Reinstall the high-voltage distributor wires in the correct firing order and secure the cover.
I've been driving an Audi Q5 for about seven or eight years, covering over 100,000 kilometers from new to now. The spark plugs have been replaced twice—the first time at 50,000 kilometers with OEM parts. The manual generally recommends inspection or replacement every 60,000 kilometers, depending on the specific engine model. For the 4-cylinder gasoline version, spark plugs are prone to carbon buildup or wear over long-term use, leading to delayed ignition, engine shaking, or increased fuel consumption. I remember once feeling sluggish acceleration, and after inspection, it turned out the spark plug gap was too large—replacing them restored normal fuel efficiency. Daily maintenance advice suggests adjusting based on driving habits; for city traffic congestion, consider servicing at 40,000–50,000 kilometers. A replacement isn’t too expensive, costing around 1,000–2,000 RMB, and it helps avoid roadside breakdowns.
