SUBARU Impreza Spark plug replacement Cost
2003–2005 · Engine, Fuel & Emissions system
Typical range
$86–$316
Parts + labour
Labour hours
0.5–1.5h
At a typical garage
Spark plugs ignite the air–fuel mixture; worn plugs cause misfires, rough idle, poor fuel economy and difficulty starting. Most modern engines use iridium or platinum plugs with 60,000–100,000-mile intervals. SUBARU Impreza spark plug replacement costs $86–$316.
Typical parts included
- Spark plug
- Spark plug
What affects the price
- Copper vs iridium vs platinum plugs (iridium lasts longest)
- Number of cylinders
- Accessibility—some engines require intake manifold removal, adding significant labour
Common questions
How long does this repair take?
Spark plug replacement on a SUBARU Impreza typically takes 0.5–1.5 hours at a garage.
How often does this need to be done?
For a SUBARU Impreza, this is typically needed every 30,000 miles for copper plugs; every 60,000–100,000 miles for iridium or platinum plugs.
Other engine, fuel & emissions system repairs on the SUBARU Impreza
- ABS hydraulic unit replacement$340–$587
- ABS sensor replacement$140–$242
- ABS system bleeding$112–$193
- AC compressor clutch replacement$280–$483
- AC compressor replacement$300–$518
Spark plug replacement cost on similar cars
- OPEL Astra 5 Doors$80–$138
- VOLKSWAGEN Golf 5 Doors$80–$138
- MERCEDES BENZ A-Klasse$80–$138
- RENAULT Megane 5 Doors$80–$138
- FORD Focus 5 Doors$80–$138
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