About every 50,000 miles.
According to the owners manual, they have platinum plugs that should be changed at 100,000 miles.
Heater plugs in a ford focus 1.8 engine should be changed every 18 months-2 years.
30000 miles
thank you
about every 75000 miles
Once on 1-2 year on regular spark plugs. Once every there years on High end spark plugs.
A standard spark plug should last about 50K. A platinum tip plug should last 100K.
No.
100K if they are platinum plugs, 50K if they are regular plugs.
Alternator
I just spoke with a Parts person at a local Toyota dealer. He told me that the 2004 Toyota Matrix requires Iridium spark plugs, which retails for about $12 at the dealership, and it should not need to be changed until 120,000 miles.
every 100,000 km