How long do spark plugs last?
That really depends upon the type of spark plugs that are in your vehicle. Vehicles 15 years old or older are more likely to have standard plugs with approximate life expectancy of 30,000 – 40,000 miles, newer model vehicles up to 2000 are usually platinum tipped, lasting approximately 60,000 miles. Lastly, some 2001 and newer model vehicles come with iridium tipped plugs which could lat up to 90,000 miles. Even if the mileage has not been reached, spark plugs should be changed every six years at the latest.
