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NPN Air Filter
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From NPN
This report was last updated 9/4/2022.
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Report Info:
Note: While Amazon.com claims 95 Ratings, we counted 86 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Pass Overall Grade
FAIL
Suspicious Reviewers
![](/public/imgs/reviewmeta/su-icon.png)
WARN
Deleted Reviews
![](/public/imgs/reviewmeta/dl-icon.png)
WARN
Word Count Comparison
![](/public/imgs/reviewmeta/wc-icon.png)
WARN
Reviewer Participation
![](/public/imgs/reviewmeta/ex-icon.png)
PASS
Rating Trend
![](/public/imgs/reviewmeta/rt-icon.png)
PASS
Unverified Purchases
![](/public/imgs/reviewmeta/vp-icon.png)
PASS
Phrase Repetition
![](/public/imgs/reviewmeta/pr-icon.png)
PASS
Overlapping Review History
![](/public/imgs/reviewmeta/rh-icon.png)
PASS
Reviewer Ease
![](/public/imgs/reviewmeta/sc-icon.png)
PASS
Brand Repeats
![](/public/imgs/reviewmeta/re-icon.png)
PASS
Incentivized Reviews
![](/public/imgs/reviewmeta/ic-icon.png)
Most Trusted Reviews
Fits my Infinity G37 great! [Go to full review]
Apr 28, 2017
100%
TRUST
TRUST
-
Verified Purchaser
-
Take-Back Reviewer (6 deleted Reviews; avg. rating: 3.3)
-
Easy Grader (avg. rating: 4.5)
Least Trusted Reviews
Cheap and quality. Don't waste your money on OEM, this ... [Go to full review]
May 16, 2016
32%
TRUST
TRUST
-
Verified Purchaser
-
Overrepresented word count (14 words)
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Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
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Overlapping Review History: reviewed 1 of 9 top products
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Overrepresented Participation (posted 16 Reviews)
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Easy Grader (avg. rating: 4.3)
Analysis Details
Fail
Suspicious Reviewers
![](/public/imgs/reviewmeta/su-icon.png)
Take-Back Reviewers
50 of the 86 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.
Warn
Deleted Reviews
![](/public/imgs/reviewmeta/dl-icon.png)
We discovered a total of 4 deleted Reviews for this product, with an average rating of 4.8. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.
Warn
Word Count Comparison
![](/public/imgs/reviewmeta/wc-icon.png)
-
- 38%
- Have an overrepresented word count
In the graph above, we can see the distribution of review word counts for this product and the expected distribution for this category. We see the following 1 group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 33 reviews (or 38%) are within an overrepresented word count group. While this is more reviews from overrepresented word count groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.
Warn
Reviewer Participation
![](/public/imgs/reviewmeta/ex-icon.png)
-
- 53%
- From reviewers with an overrepresented participation
We see the following 2 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 46 reviewers (or 53%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass
Rating Trend
![](/public/imgs/reviewmeta/rt-icon.png)
-
- 0%
- Created on high-volume days
We counted 86 reviews for this product over the span of 1,898 days, an average of 0.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass
Unverified Purchases
![](/public/imgs/reviewmeta/vp-icon.png)
4 of the 86 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
Pass
Phrase Repetition
![](/public/imgs/reviewmeta/pr-icon.png)
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Reviews:
Show MoreShow Less
4 reviews
(5.0/5)
(5.0/5)
2 reviews
(5.0/5)
(5.0/5)
2 reviews
(5.0/5)
(5.0/5)
2 reviews
(5.0/5)
(5.0/5)
2 reviews
(5.0/5)
(5.0/5)
Common Phrases in Titles:
7 reviews
(5.0/5)
(5.0/5)
2 reviews
(5.0/5)
(5.0/5)
2 reviews
(5.0/5)
(5.0/5)
11 of the 86 total reviews for this product use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass
Overlapping Review History
![](/public/imgs/reviewmeta/rh-icon.png)
Reviewers of this product have ALSO reviewed the following products:
9% also reviewed:
TYC 800091P Infiniti Replacement Cabin Air Filter by TYC
5% also reviewed:
FRAM Fresh Breeze Cabin Air Filter with Arm... by Fram
3% also reviewed:
Culligan FM-15RA Faucet-Mount Replacement Water... by Culligan
3% also reviewed:
Bosch BC1430 QuietCast Premium Ceramic Disc Brake... by BOSCH
3% also reviewed:
Fujitsu PA03656-B005 Image Scanner ScanSnap iX500 by Fujitsu
3% also reviewed:
2Pcs BOXI 6471 Front Hood Gas Charged Lift... by BOXI
2% also reviewed:
SanDisk Cruzer Fit CZ33 USB Flash Drive by SanDisk
Does not include products
from the same brand
from the same brand
25 of the 86 reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass
Reviewer Ease
![](/public/imgs/reviewmeta/sc-icon.png)
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.2, while the average ease score for reviewers in this category is 4.3.
4.2 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass
Brand Repeats
![](/public/imgs/reviewmeta/re-icon.png)
Brand Repeaters
We didn't detect a substantial amount of Brand Repeaters.
Pass
Incentivized Reviews
![](/public/imgs/reviewmeta/ic-icon.png)
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
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- 0%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.