How often should the spark plugs be replaced in an Audi Q3?

[ColinDella]

The spark plugs in an Audi Q3 should be replaced every 40,000 to 50,000 kilometers, or earlier if significant wear is observed. The function of spark plugs is to introduce the high-voltage electricity generated by the ignition coil into the engine cylinder, creating a spark between the electrodes to ignite the air-fuel mixture. The Audi Q3 is a compact SUV produced by FAW-Volkswagen Audi, whose main models include the A1, A3, A4, A5, A6, A7, A8, Q1, Q2, Q3, Q5, Q7, Q8, TT, and R8. Taking the Audi Q3 as an example, its body dimensions are 4481mm in length, 1848mm in width, and 1616mm in height, with a wheelbase of 2680mm.