Parts for your 2011 Toyota Avensis-Spark plugs

2011 Toyota Avensis spark plugs: what they do and when to replace them

Technical sources including the Toyota Avensis Owner’s Manual (2011, T27 series), Toyota Europe workshop manuals for the 1ZR/2ZR/3ZR petrol engines, and OEM fitment catalogues from Denso and NGK confirm that 2011 Avensis petrol models are fitted with long‑life iridium spark plugs (commonly Denso SC20HR11/SC16HR11 or equivalent). The D‑4D diesel variants (1AD‑FTV/2AD‑FTV) don’t use spark plugs at all