Repair cost guidesAUSTRALIAN REPAIR COST GUIDE

Spark Plug Replacement Cost in Australia

The number and type of plugs matter, but access is often the largest labour variable. Some engines require intake components to be removed before the plugs can be reached.

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Pricing data checked 28 August 2026. Guide reviewed 1 September 2026. How estimates work.

Vehicle-profile example

Spark Plug Replacement

2018 Toyota Corolla · Australia

$174–$1,168

Parts$68–$473

Labour0.9660000000000001–3.8640000000000003 hours

Example only. Choose your own vehicle profile for an adjusted range.

Signs to investigate

Engine misfire or rough idle
Poor fuel economy
Hard starting
Reduced acceleration or a check-engine light

What changes the price?

Number of cylinders
Copper, platinum or iridium plugs
Engine access and intake removal
Whether coils or seals also need attention

Questions to ask the workshop

What plug type and service interval apply?
How many plugs are included?
Does access require removing the intake manifold?
Has the misfire been diagnosed rather than assumed?

COMMON QUESTIONS

Understand the quote before agreeing

How much does spark plug replacement cost in Australia?

For the 2018 Toyota Corolla example shown, ShiftyMechanics estimates $174–$1,168. Exact parts and the workshop's actual labour rate can change the result.

Does the estimate include parts and labour?

Yes. ShiftyMechanics shows the parts range, labour hours, Australian independent-workshop hourly-rate range and estimated total separately.

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