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Starting with the 1999 year model, most BMWs have been factory equipped with platinum-tipped (and iridium-tipped beginning in 2006) electrode spark plugs that require replacement at 100,000 miles. These V10 and V8 equipped machines require spark plug replacement every 37,000 miles for optimal performance.
Accordingly, how often should you change spark plugs in a BMW?
30,000 miles
Furthermore, how many spark plugs does a BMW have?
Price is per one spark plug or ignition coil. You will need as many spark plugs or igntion coils as the number of cylinder in your BMW. Typically four, six or eight.
The average cost for a BMW 328i spark plug replacement is between $144 and $300. Labor costs are estimated between $120 and $152 while parts are priced between $24 and $148.