Spark plugs

[starfield]

Hello All

I have got a Yaris Hybrid 16 plate. I've had for many years and its very reliable. The car has recently passed 40k  miles. I am now wondering about spark plugs? How often should I change them? 

[flash22]

remove and clean you should get another 30-40k out of the plugs with no issue, only replace with Denso plugs

[TonyHSD]

Change intervals at 60k miles. Good to follow this recommendation to preserve life of your coils. 
Yes only buy Denso Iridium from  Halfords or original Toyota spark plugs only from a dealer.  Anything else can be fake. Eurocarparts also has original stuff. 
You need a special socket , can buy from Amazon or eBay. 👍