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Australia, Canberra
1 Level
716 Review
19 Karma

Review on πŸ”₯ Bosch Automotive (9621) OE Fine Wire Double Iridium Spark Plug - Single: Ignite Optimal Performance and Efficiency! by Tyler Cash

Revainrating 3 out of 5

120,000 miles later in a 2009 Toyota Corolla.

After 120,000 miles in a 2009 Toyota Corolla the gas mileage started to drop slightly from 35.5mpg to 32.5-33.5mpg. So I bought them to replace the OEM spark plugs and I was able to get almost the same gas mileage (34-35mpg) when the car was new.

Pros
  • Handy part
Cons
  • Expensive insurance