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Spare parts reviews ➔ All comparisons ➔ Bosch ➔ OEM Volkswagen Page 12

Spark plug Bosch or OEM Volkswagen

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Bosch
OEM Volkswagen
Bosch › Spark plug
tsurayuki
Rating 5.0

Since I mounted Bosch 4-prong spark plugs, fuel economy has improved a lot. Gone from 12-13 km/l to nearly 15 km/l.

Pros: fuel economy improved
Vehicle: Mazda
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Bosch › Spark plug
Qlanger
Rating 3.0

I have never seen any real large difference in NGK, Denso, and Champion if the proper heat range/type plug was used.

I'm not a fan of the old platinum Bosch design or regular autolite.

Pros: proper heat range works
Cons: not a fan
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Bosch › Spark plug
200MPHTape
  • Idle:
  • Acceleration:
Rating 1.0

Yeah I own and operate an auto repair facility and refuse to use Bosch plugs because I’ve had a lot of issues with them in the past. Misfires mostly.

Cons: misfires
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