Spark plug Champion or Denso

PartReview Score

Rank #16 in ranking

3.0

Acceleration

2.5

Idle

2.1

Starting

2.8

Owners' choice:

Jeep Wrangler

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

Champion

Denso

Champion › Spark plug

Zealousideal-Web5346 29 Jan 2026, 18:27

Rating 4.0

39 dollars for parts? Hopefully they aren't champion plugs. Hell of a deal

Pros: Hell of a deal

Cons: Hopefully not champion

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

Champion › Spark plug

Representative_Most9 25 Jan 2026, 08:58

Starting:

Rating 5.0

Champion copper plugs are great! Why change if they are working perfectly? Copper is a better conductor than anything other than silver.

Pros: working perfectly, better conductor

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

Champion › Spark plug

Mag1cWays 25 Jan 2026, 04:28

Starting:
Idle:
Acceleration:

Rating 3.0

When I started the vehicle up, it woke up really aggressive, there was a strong gas smell and it stuttered badly when driving her, along with the check engine light flashing at me when I did the test drive.\n\nAfter taking out the coil pack, I found that there was a lot of crap inside the springs within the boots...looked like dielectric grease gummed up by the previous owner. After cleaning all those springs and making sure they were straight, I took the new Spark plugs out (Champion Copper) I rechecked the gap and they were all good, after putting everything back together the old girl started up quick as hell, no shaking or anything. I drove it for 15 minutes and I had no issues whatsoever.

Pros: started up quick as hell, no shaking

Cons: strong gas smell, stuttered badly

Champion › Spark plug

Infamous-Impact966 27 Jan 2026, 19:56

Starting:
Idle:
Acceleration:

Rating 2.0

the guy said the spark plugs I used are the issues because they are champion brand and I needed to use NGK brand for my Acura

Cons: champion brand issues

Vehicle: Acura

Champion › Spark plug

OldGrimMechanic 5 Jan 2026, 20:48

Starting:

Rating 1.0

A few years back I bought a box set of eight Champion spark plugs that were made in Russia, and four spark plugs did that.

Champion › Spark plug

buginmybeer24 5 Jan 2026, 19:54

Rating 1.0

I've seen it multiple times in Champion in a small engine shop.

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Show all

Which spark plug to choose — Champion 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 Champion 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 Champion?

In March 2026 on PartReview, spark plug Denso were overall better than Champion.

Champion received a PR Score of 53 out of 100, and Denso scored 78 points.
Champion ranked 16 in the overall ranking, and Denso ranked 2.
The average rating is higher for Denso (3.9) than for Champion (3).
Spark plug Denso have better feature ratings than Champion:
- Idle - owners believe, that this property for Denso is better than Champion.
- Acceleration - drivers claim, that this property for Denso is outperforms Champion.
- Starting - reviews suggest, that this property for Denso is preferred to Champion.

Which spark plug are more popular — Champion or Denso?

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

By vote balance, spark plug Denso surpassed Champion:

For Champion, the ratio of positive (99) to negative (87) votes is 12 votes.
For Denso, the ratio of positive (447) to negative (123) votes is 324 votes.

By number of reviews, spark plug Denso surpassed Champion:

For spark plug Champion there are 60 reviews: 29 positive, 6 neutral, 25 negative.
For spark plug Denso there are 184 reviews: 137 positive, 18 neutral, 29 negative.

Which spark plug do car owners prefer — Champion or Denso?

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

Champion are chosen by owners of cars such as: Jeep Wrangler, 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 Champion with: NGK, Bosch, Autolite, AC DELCO, BRISK, OEM Volkswagen, OEM Toyota, Motorcraft, OEM FORD, OEM BMW.

Also available: comparisons of spark plug Denso with: NGK, Bosch, Autolite, AC DELCO, BRISK, OEM Volkswagen, OEM Toyota, 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.