Parts for your 2016 Toyota Crown-Spark plugs

2016 Toyota Crown spark plugs — what they do and when to replace them

Yes, spark plugs are absolutely used on the 2016 Toyota Crown. Technical references including the Toyota Repair Manual for the S210-series Crown, the Toyota Electronic Parts Catalogue (EPC), and DENSO/NGK application catalogues all list iridium spark plugs for the 2.0‑litre 8AR‑FTS turbo petrol, the 2.5‑litre hybrid (2AR series), and the 3.5‑litre V6 hybrid (2GR series). There wasn’t a factory diesel Crown for 2016, so spark‑plugs are relevant to every variant that year.

In this car, the spark plugs provide the precise spark that ignites the air–fuel mix in each cylinder. Modern Toyota engines use long‑life iridium plugs for clean, reliable combustion, strong cold starts, and good fuel economy. Even the hybrid Crowns rely on spark plugs, the petrol engine still fires up regularly under load or cruising, so healthy plugs matter for smooth transitions and low emissions.

For servicing, owners should expect replacement roughly every 100,000–120,000 km (or about 6 years), noting that turbocharged use or lots of short trips can justify earlier changes. The best bet is to follow the service schedule in the owner’s handbook and use OEM‑quality iridium plugs in the exact heat range specified for the engine code fitted to the vehicle.

Signs the Crown’s plugs are due include a rough idle, sluggish take‑off, higher fuel use, hard starting, or misfire codes. Because these engines are fairly sensitive, fresh plugs can make them feel crisper and cut back on fuel burn.

• Use the correct iridium plug type and heat range for 8AR/2AR/2GR engines. Don’t “downgrade” to copper.
• Let the engine cool, remove coils gently, and blow out plug wells before removal.
• Hand‑start threads, then torque to the spec in the Toyota manual. Toyota and plug makers generally advise no anti‑seize on plated threads.
• Iridium plugs are pre‑gapped, avoid forcing the ground strap to change the gap.
• V6 owners: rear‑bank access may need the cowl off, allow extra labour time.

A workshop familiar with Crowns will sort the right plugs, fit them properly, check coil boots, and road‑test so the car feels smooth and eager under the bonnet — just how a well‑kept 2016 Toyota Crown should.

Popular questions about 2016 Toyota Crown spark plugs

How often should spark plugs be changed on a 2016 Crown?
Most owners will be right at 100,000–120,000 km or around six years, whichever comes first. If the car does lots of short city runs, tows, or is the 2.0‑litre turbo, bringing that forward a bit can help keep it running sweet as. Always check the service schedule for the exact engine code.

Which spark plugs are best for this model?
Stick with OEM‑spec iridium plugs from recognised makers like DENSO or NGK, matched to your engine (8AR‑FTS, 2AR hybrid, or 2GR hybrid). The correct heat range and design keep combustion clean and protect the engine, especially on direct‑injection and turbo variants.

What symptoms point to worn plugs?
Look for rough idle, hesitation, poorer fuel economy, slower starts, or a check‑engine light with misfire codes. If coils and fuel are fine, fresh plugs often restore a smooth, quiet idle and better response.