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CariX

Spark plug replacement

Spark plugs ignite the air and petrol mixture in the cylinders. Worn ones cause hard starts, misfires, a rough idle and higher fuel use. They are all replaced at once, with the type the manufacturer specifies. Diesel engines have no spark plugs but glow plugs, which only help cold starts and are usually replaced when they fail.

Typical duration
1 h
How often
At the manufacturer's interval: roughly every 30,000–40,000 km for standard plugs and every 60,000–100,000 km for iridium or platinum ones.

Repair shops by city

Cities with at least one repair shop in the Maintenance category. The count covers businesses on CariX and those from OpenStreetMap not yet on CariX.

Other cities (39)

Frequently asked questions

How long does a spark plug replacement take?

Usually around 1 h. The actual time depends on the car and the shop's schedule.

How often is a spark plug replacement needed?

At the manufacturer's interval: roughly every 30,000–40,000 km for standard plugs and every 60,000–100,000 km for iridium or platinum ones.

How do I book through CariX?

Choose a repair shop and send a booking request with your preferred day and time; the shop confirms it, declines it or suggests another time. You get an email at every step. CariX is free for drivers.

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