Spark plug OEM Toyota or Denso

PartReview Score

Rank #8 in ranking

4.0

Acceleration

3.7

Idle

3.0

Starting

4.5

Owners' choice:

PR Score

Ranking

Votes

Reviews

Average rating

Properties

Car

PartReview Score

Rank #2 in ranking

324

137

184

3.9

Acceleration

3.7

Idle

3.8

Starting

3.8

No data

Reviews

All

OEM Toyota

Denso

Denso › Spark plug

Zealousideal_Tank210 25 Jan 2026, 23:14

Starting:

Rating 5.0

Ignition coil most likely. I have done many dozens of them. Takes about 2 minutes to replace.

Pros: easy to replace

Denso › Spark plug

logbiter 22 Jan 2026, 13:39

Rating 5.0

I recently got Denso (OEM) from my local o’reillys cheaper than the dealer (~$80).

Pros: cheaper than dealer

Denso › Spark plug

EnoSoles 21 Jan 2026, 21:48

Rating 5.0

Bro ABSOLUTELY do the spark plugs yourself. I bought oem Denso spark plugs from Napa Auto for about $180. Then all you need is a spark plug socket w/ swivel head, 10mm socket, 12mm, a couple extensions, needle nose pliers, dielectric grease, and a pick to make life easier.

Pros: save money, easy job

Cons: time consuming for beginner

Denso › Spark plug

Datanman23 18 Jan 2026, 07:44

Rating 5.0

Denso iridium spark plugs

Pros: improved engine performance

Vehicle: Toyota

Denso › Spark plug

delux2769 17 Jan 2026, 20:38

Idle:
Acceleration:

Rating 4.0

New Denso Platinum spark plugs. Car drives great, no codes, no sputtering or stalling or hesitation.

Pros: car drives great, no sputtering

Vehicle: Toyota MR2

Denso › Spark plug

Bren1127 11 Jan 2026, 18:01

Rating 4.0

Fitting a decent set (Denso or NGK) of iridium plugs is also worthwhile.

Pros: worthwhile

Vehicle: Subaru Legacy

Denso › Spark plug

SnuggleWarrior117 30 Oct 2025, 20:10

Idle:

Rating 3.0

Swapped the NGKs (around 60k miles on them) for new OEM Denso plugs. That stopped the shaking for about two days, then it came back.

Pros: stopped shaking for days

Cons: shaking came back

Vehicle: Lexus

Mileage: 96560 km

Denso › Spark plug

Sea_Individual_3148 11 Aug 2025, 04:51

Rating 3.0

I already replaced the spark plugs with the Denso ones I listed though... Is this bad?

Vehicle: Lexus

Mileage: 60000 km

OEM Toyota › Spark plug

renn90 9 Jan 2026, 05:31

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

Denso › Spark plug

unfer5 5 Jan 2026, 19:39

Starting:
Acceleration:

Rating 1.0

I’ve had several Denso plugs do this on a couple Camrys I service, and our own. All 2.4 cars. Caused tow ins for both husband and wife’s cars. I’ve fired denso as a spark plug provider, too many failures.

Pros: null

Cons: too many failures

Vehicle: Toyota Camry

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Show all

Which spark plug to choose — OEM Toyota or Denso?

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 OEM Toyota and Denso

PR Score.
Overall ranking.
Vote balance.
Average rating.
Number of reviews.
Feature ratings.
Car owners’ choice.

Which spark plug are better — Denso or OEM Toyota?

In March 2026 on PartReview, spark plug Denso and OEM Toyota were roughly equal.

OEM Toyota received a PR Score of 80 out of 100, and Denso scored 78 points.
OEM Toyota ranked 8 in the overall ranking, and Denso ranked 2.
The average rating is higher for OEM Toyota (4) than for Denso (3.9).
Spark plug OEM Toyota have better feature ratings than Denso:
- Acceleration - owners believe, that by this property OEM Toyota does not differ from Denso.
- Idle - drivers claim, that this property for Denso is outperforms OEM Toyota.
- Starting - reviews suggest, that this property for OEM Toyota is preferred to Denso.

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

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

By vote balance, spark plug Denso surpassed OEM Toyota:

For OEM Toyota, the ratio of positive (56) to negative (14) votes is 42 votes.
For Denso, the ratio of positive (447) to negative (123) votes is 324 votes.

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

For spark plug OEM Toyota there are 22 reviews: 16 positive, 4 neutral, 2 negative.
For spark plug Denso there are 184 reviews: 137 positive, 18 neutral, 29 negative.

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

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

OEM Toyota are chosen by owners of cars such as: Toyota Corolla, Toyota Camry, and others.

Spark plug Denso have not yet taken leading positions in car-specific ratings. You can help by adding a review and specifying your car.

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 OEM Toyota with: NGK, Bosch, Autolite, Champion, AC DELCO, BRISK, OEM Volkswagen, Motorcraft, OEM FORD, OEM BMW.

Also available: comparisons of spark plug Denso with: NGK, Bosch, 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.