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Spare parts reviews ➔ All comparisons ➔ Bosch ➔ OEM Toyota

Spark plug Bosch or OEM Toyota

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Bosch
OEM Toyota
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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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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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
Br0boc0p
  • Acceleration:
Rating 3.5

Yes. However as a long time old car mechanic I learned the hard way some new cars are super picky about what spark plugs you put in them. It kind of caught me by surprise. Parts store gave me Bosch plugs their system matched to my GF's Pilot, and it fell on its face hard about a half hour into the next drive.

Pros: new cars picky about plugs
Cons: Bosch plugs caused issues
Vehicle: Honda Pilot
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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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OEM Toyota › Spark plug
renn90
Rating 1.0

A regional tire store / repair center "recommend" spark plugs on my Sienna at 92K for $850 (intake manifold has to come off to get at 3 of the plugs). I asked them what benefit would there be in replacing spark plugs at 92K considering Toyota sets the spark plug replacement at 120K.

Cons: unnecessary work
Vehicle: Toyota Sienna
Mileage: 92000 km
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Which spark plug to choose — Bosch or OEM Toyota?

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 Toyota
  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 Toyota or Bosch?

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

  1. Bosch received a PR Score of 61 out of 100, and OEM Toyota scored 80 points.
  2. Bosch ranked 3 in the overall ranking, and OEM Toyota ranked 8.
  3. The average rating is higher for OEM Toyota (4) than for Bosch (3.3).
  4. Spark plug OEM Toyota have better feature ratings than Bosch:
    • Idle - owners believe, that this property for Bosch is better than OEM Toyota.
    • Acceleration - drivers claim, that this property for OEM Toyota is outperforms Bosch.
    • Starting - reviews suggest, that this property for OEM Toyota is preferred to Bosch.

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

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

By vote balance, spark plug Bosch surpassed OEM Toyota:

  • For Bosch, the ratio of positive (515) to negative (317) votes is 198 votes.
  • For OEM Toyota, the ratio of positive (56) to negative (14) votes is 42 votes.

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

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

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

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

OEM Toyota are chosen by owners of cars such as: Toyota Corolla, Toyota Camry, 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, Motorcraft, OEM FORD, OEM BMW.

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

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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