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.
Change the plugs at 100,000 miles or earlier if the engine is not performing as it should.
About every 50,000 miles.
Unless your ford focus is a diesel your car does not have glow plugs.
If they are platinum plugs, should be every 95,000 to 100,000 miles.
The original plugs should be good for around 100,000 miles ( 160,000 ) kms. Take it from there.
Change the plugs and wires at 100,000 miles unless you experience poor performance or a drop in MPG. In that case change them sooner.
50,000 miles.
Generally I change platinum plugs at 100K and regular plugs at 50K.
No.
How i can change the engine oil for my my mercedes benz 240c 2003?
Spark plugs and wires should be replaced after 60,000 miles depending on the type of driving and the location where you live and drive.