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Change Car Spark Plugs

Easy 0h30–0h45 ~50–75£
Estimated time 0h30–0h45
Estimated labour cost ~50–75£
Difficulty Easy
Vehicles
Yaris 1999-2006 5
  • 1.0 VVT-i Petrol (1SZ-FE)
  • 1.0 VVT-i Petrol (1SZ-FE)
  • 1.3 VVT-i Petrol (2NZ-FE)
  • 1.3 VVT-i Petrol (2SZ-FE)
  • 1.5 VVT-i TS Petrol (1NZ-FE)
Yaris 2005-2013 6
  • 1.0 12V VVT-i, -LPG LPG,Petrol (1KR-FE)
  • 1.3 16V VVT-i Petrol (2NZ-FE)
  • 1.3 16V VVT-i Petrol (2SZ-FE)
  • 1.33 16V VVT-i Petrol (1NR-FE)
  • 1.5 16V VVT-i Petrol (1NZ-FE)
  • 1.8 16V VVT-i TS Petrol (2ZR-FE)
Yaris 2011-2020 4
  • 1.0 12V VVT-i Petrol (1KR-FE)
  • 1.33 Petrol (1NR-FE)
  • 1.5 Hybrid Electricity,Petrol (1NZ-FXE)
  • 1.5 Petrol (2NR-FKE)
Yaris 2020-2025 2
  • 1.0 Petrol (1KR-FE)
  • 1.5 HEV Electricity,Petrol (M15A-FXE)

What is the role of Toyota Yaris spark plugs?

The spark plug generates a spark at the precise moment needed to ignite the air/fuel mixture in the combustion chamber of petrol (or LPG) engines. The engine management system controls ignition timing.

When should you change your Toyota Yaris spark plugs?

Manufacturers provide replacement recommendations; refer to your vehicle maintenance booklet. Generally replace every 60,000 km (45,000 km for severe use). Some vehicles with long-life plugs (titanium, platinum, iridium) can go 100,000–150,000 km.

How do I know if I need to change my Toyota Yaris spark plugs?

Via the EOBD system (mandatory since 2001 on petrol cars), faulty spark plugs will trigger fault codes, typically P0301–P0304 (misfire, cylinders 1–4). Symptoms include: difficulty starting, misfires, reduced engine power, increased fuel consumption.

Is it difficult to change Toyota Yaris spark plugs?

Difficulty level 2/5: technically easy but requires specific tools (spark plug wrench, torque wrench). Key points: wait for cold engine, clean plug well with compressed air before removal, never use a dropped plug, do not grease threads, hand-tighten then torque to specification.

4 models covered

Model Year Range Engines covered Fuel
Yaris 1999-2006 1999-2006 1.0 VVT-i Petrol (1SZ-FE), 1.0 VVT-i Petrol (1SZ-FE), 1.3 VVT-i Petrol (2NZ-FE), 1.3 VVT-i Petrol (2SZ-FE), 1.4 D4-D Diesel (1ND-TV), 1.5 VVT-i TS Petrol (1NZ-FE) Diesel, Petrol
Yaris 2005-2013 2005-2013 1.0 12V VVT-i, -LPG LPG,Petrol (1KR-FE), 1.3 16V VVT-i Petrol (2NZ-FE), 1.3 16V VVT-i Petrol (2SZ-FE), 1.33 16V VVT-i Petrol (1NR-FE), 1.4 D-4D Diesel (1ND-TV), 1.5 16V VVT-i Petrol (1NZ-FE), 1.8 16V VVT-i TS Petrol (2ZR-FE) Diesel, LPG, Petrol
Yaris 2011-2020 2011-2020 1.0 12V VVT-i Petrol (1KR-FE), 1.33 Petrol (1NR-FE), 1.4 D-4D Diesel (1ND-TV), 1.5 Hybrid Electricity,Petrol (1NZ-FXE), 1.5 Petrol (2NR-FKE) Diesel, Electricity, Petrol
Yaris 2020-2025 2020-2025 1.0 Petrol (1KR-FE), 1.5 HEV Electricity,Petrol (M15A-FXE), 1.5 Petrol (M15A-FKS) Electricity, Petrol