How often should the spark plugs of the Tiguan be replaced?
3 Answers
Volkswagen Tiguan spark plugs should be replaced every 30,000 kilometers or 4 years. Here is some information about spark plugs: 1. Spark plugs are part of the ignition system. Their main function is to introduce the high voltage from the ignition coil into the engine cylinder, generating a spark between the spark plug electrodes to ignite the air-fuel mixture, thereby enabling the engine to perform work. 2. To determine if spark plugs need replacement, they can be removed for inspection. Check their color, the gap between the electrodes, and whether there is any leakage between the ceramic and metal shell. 3. If removing them is inconvenient, you can also observe if the car has difficulty starting when cold, if the idle is rough, or if there is a noticeable decline in engine performance. If these symptoms occur, the spark plugs need to be replaced.
I've been driving a Tiguan for several years. The replacement cycle for spark plugs is generally around 60,000 kilometers, but it's best to refer to the manual for specific recommendations. Mine is a 2020 model, and the manual states that spark plugs should be replaced every 60,000 kilometers or every 4 years, whichever comes first. Once, I delayed the replacement until 70,000 kilometers, and the engine shook badly during startup, with noticeably weaker acceleration. After installing new spark plugs, everything ran smoothly again, and fuel consumption also decreased. Spark plugs are crucial for ignition, and when they wear out, they can cause ignition failures, affecting engine performance and even leading to malfunctions. During routine maintenance, you can ask the technician to check the spark plug gap or carbon buildup. I recommend regular maintenance and not skimping on this expense, as neglecting it could lead to more complicated and costly repairs later. For vehicles like the Tiguan, spark plug lifespan also depends on driving habits: if you do a lot of short city trips, you might delay replacement slightly; but if you frequently drive long distances on highways, it's better to check them every 50,000 kilometers to ensure safety.
The role of spark plugs is to ignite the engine, and delayed ignition may occur when they wear out. For the Tiguan model, it is generally recommended to replace spark plugs every 60,000 kilometers; the platinum ones I'm using can last longer, about 80,000 kilometers. Delaying replacement may lead to acceleration lag, increased fuel consumption, or engine warning lights. I once experienced ignition failure, and the car stalling at an intersection was quite dangerous; fortunately, it was towed to the repair shop in time for replacement. The cost of spark plugs is not high, with a set of original ones costing about 200 to 300 yuan; DIY replacement can save on labor costs, but requires tools and careful operation to avoid damaging the electrodes. Tiguan owners can have the mechanic check the spark plug gap during each maintenance cycle to prevent issues early. Developing this habit ensures no delays, as the ignition system is crucial and directly affects the driving experience.
