Spark plug NGK or Denso

PartReview Score

Rank #1 in ranking

1506

597

763

4.0

Acceleration

3.7

Idle

3.5

Starting

4.1

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

NGK

Denso

NGK › Spark plug

7thtrydgafanymore 20 Dec 2023, 20:32

Acceleration:

Rating 4.0

I used NGK at 100k miles and have been happy with them.

Pros: happy with them

Vehicle: Ford

Mileage: 160934 km

Denso › Spark plug

rg25 19 Dec 2023, 18:28

Rating 5.0

I installed Denso a few weeks ago.

Pros: installed recently

NGK › Spark plug

MadFatty 13 Dec 2023, 07:50

Acceleration:

Rating 4.0

Skip the genuine spark plugs and just get NGKs. And skip the genuine oil change kit and get pentosin if you wanna stay oe

Pros: oe quality

NGK › Spark plug

hallstevenson 1 Dec 2023, 19:37

Rating 5.0

7751 are the OEM plugs and rated for ~105k miles, give or take.

Pros: OEM plugs, high mileage rating

Mileage: 168981 km

Part number: 7751

NGK › Spark plug

El-Jewpacabra 25 Nov 2023, 12:11

Acceleration:

Rating 5.0

I like my NGKs a lot. Never had any issues with them and they perform well

Pros: perform well, no issues

NGK › Spark plug

TheOnlyQueso 25 Nov 2023, 04:51

Rating 5.0

Honestly I think NGK plugs are better. Either one does the same thing, but I've never heard of a bad NGK plug, even well beyond its normal useful life.

Pros: better, never heard bad

NGK › Spark plug

zeromutt 16 Nov 2023, 03:10

Rating 5.0

I stick with ngk iridium

Pros: ngk iridium

NGK › Spark plug

bp626 9 Nov 2023, 02:04

Rating 5.0

NGK Ruthenium 95125.. I ran a set for 25k miles w/o issue on Stg 2 E85 tune.. their gap barely if at all budged.. probably could've kept using them.. ymmv.

Pros: no issues, gap barely budged

Mileage: 25000 km

Part number: 95125

NGK › Spark plug

blue93g20 9 Jan 2024, 17:13

Acceleration:

Rating 3.0

I bought these when I did my last tune up and plug swap just to try. I noticed zero difference in power or mpg.

Pros: no difference in power

Cons: no difference in mpg

NGK › Spark plug

alrashid2 6 Nov 2018, 13:21

Acceleration:

Rating 2.0

Now that I've done the job, I can't tell if it's just in my head but the car seems to have less power now. It was already a sluggish engine to begin with it but it feels like I need to floor it even more. Also, the gas mileage has dropped from 25 MPG to 22.5 MPG.

Pros: idles completely smooth

Cons: less power, mileage dropped

Vehicle: Subaru

Mileage: 60000 km