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Spare parts reviews ➔ All comparisons ➔ Bosch ➔ OEM Audi

Spark plug Bosch or OEM Audi

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Bosch
OEM Audi
Bosch › Spark plug
Wacky_Engineer1975
  • Starting:
Rating 5.0

It doesn't look eroded. It looks like the centre electrode tip has fallen off. That shouldn't happen. I usually only use Bosch or NGK plugs. I've never heard of Auto lite...

Pros: reliable
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OEM Audi › Spark plug
slowwmk7
  • Acceleration:
Rating 5.0

It\u2019s very easy. My s3 has been stage 2 on e85 for the past 60k miles and I have had 0 issues. oil change, spark plugs, etc\u2026 all done by myself and it\u2019s easy.

Pros: very easy, zero issues
Vehicle: Audi S3
Mileage: 60000 km
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Bosch › Spark plug
doc_55lk
Rating 5.0

Your observation is correct.

Bosch is the original manufacturer. Buying from them will be cheaper. Mercedes genuine just means they take the Bosch part and slap their name on it to say "yes, this component is up to our standard".

Pros: cheaper, original manufacturer
Cons: Mercedes mark up price
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OEM Audi › Spark plug
codz
  • Idle:
Rating 3.0

spark plugs and coils (first ride was smooth I though yeah but then manifested again) main motor mount (better revision, nothing changed, the vibration goes on)

Pros: first ride was smooth
Cons: vibration goes on
Vehicle: Audi Q3
Mileage: 64000 km
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Bosch › Spark plug
treegangster
  • Starting:
Rating 3.0

Changed valve cover/gasket and installed new Bosch plugs and NGK boots.

Car had slightly higher rpms at cold startup but didn\u2019t think anything was wrong. After a few days engine started to misfire. I did some research and it sounded like I should use OEM plugs. I purchased Nissan plugs from the dealer and replaced the Bosch plugs. Misfire went away, but higher rpms at cold start persisted.

Pros: misfire went away
Cons: higher rpms at cold start
Mileage: 90000 km
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Bosch › Spark plug
nock6687
  • Acceleration:
Rating 2.0

I have a 21 xlt 4wd 2.7 and I do A LOT of driving for work. Recently crossed 80k miles and it started misfiring like crazy shortly after that and threw a code. Pulled the plugs and they were definitely fouled. I did some reading and saw most people change the plugs out around this interval so I went ahead and did it. EVERY auto part store near me only had 1 or 2 oem plugs and I couldn\u2019t really wait so I went ahead and got BOSCH iridium plugs. Well I\u2019m noticing when I get on it or go to speed up at higher RPMs/gears, I\u2019m getting what feels like stuttering or very minor misfires every now but it\u2019s not throwing any codes.

Cons: stuttering, minor misfires
Mileage: 128747 km
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Bosch › Spark plug
Spirited_Can_1738
  • Idle:
Rating 2.0

If it is the skyactive-x be aware that the owners manual advises spark plug replacement at 40k miles and the Mazda plugs are \u00a340 each. I put aftermarket Bosch plugs in and it ran very lumpy and had to replace with Mazda ones.

Cons: ran very lumpy
Vehicle: Mazda 3
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Which spark plug to choose — Bosch or OEM Audi?

If choosing spark plug across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.

We compare spark plug across these categories:

Comparison of spark plug Bosch and OEM Audi
  1. PR Score.
  2. Overall ranking.
  3. Vote balance.
  4. Average rating.
  5. Number of reviews.
  6. Feature ratings.
  7. Car owners’ choice.

Which spark plug are better — OEM Audi or Bosch?

In March 2026 on PartReview, spark plug Bosch were overall better than OEM Audi.

  1. Bosch received a PR Score of 61 out of 100, and OEM Audi scored 86 points.
  2. Bosch ranked 3 in the overall ranking, and OEM Audi ranked 11.
  3. The average rating is higher for OEM Audi (4.4) than for Bosch (3.3).
  4. Spark plug OEM Audi have better feature ratings than Bosch:
    • Idle - owners believe, that this property for Bosch is better than OEM Audi.
    • Acceleration - drivers claim, that this property for OEM Audi is outperforms Bosch.
    • Starting - reviews suggest, that this property for OEM Audi is preferred to Bosch.

Which spark plug are more popular — Bosch or OEM Audi?

In March 2026 on PartReview, spark plug Bosch were overall more popular than OEM Audi.

By vote balance, spark plug Bosch surpassed OEM Audi:

  • For Bosch, the ratio of positive (515) to negative (317) votes is 198 votes.
  • For OEM Audi, the ratio of positive (32) to negative (5) votes is 27 votes.

By number of reviews, spark plug Bosch surpassed OEM Audi:

Which spark plug do car owners prefer — Bosch or OEM Audi?

In March 2026, according to PartReview, spark plug Bosch led more car-specific ratings than OEM Audi:

Bosch are chosen by owners of cars such as: Nissan Altima, Audi S4, Ford Ranger, Volkswagen Beetle, Volkswagen Corrado, and others.

OEM Audi are chosen by owners of cars such as: Audi A3, Audi A6, and others.

Other comparisons of spark plug

If this comparison didn’t fully answer your question, there are many others on PartReview.

For example, comparisons of spark plug Bosch with: NGK, Denso, Autolite, Champion, AC DELCO, BRISK, OEM Volkswagen, OEM Toyota, Motorcraft, OEM FORD.

Also available: comparisons of spark plug OEM Audi with: NGK, Denso, Autolite, Champion, AC DELCO, BRISK, OEM Volkswagen, OEM Toyota, Motorcraft, OEM FORD.

You can also see who is better among other spark plug manufacturers: Bosch or NGK, NGK or Denso, NGK or Autolite, NGK or Champion, NGK or AC DELCO.

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