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ACDelco GF578 Professional Fuel Filter
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From ACDelco
This report was last updated 12/11/2017.
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Report Info:
Last Updated: Dec 11, 2017
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Note: We only analyze "reviews" and ignore one-tap "ratings".
Top products in Fuel Filters with authentic reviews:
Report Card
Pass Overall Grade
FAIL Suspicious Reviewers
WARN Brand Repeats
WARN Word Count Comparison
WARN Reviewer Participation
PASS Rating Trend
PASS Unverified Purchases
PASS Phrase Repetition
PASS Overlapping Review History
PASS Reviewer Ease
PASS Incentivized Reviews
PASS Deleted Reviews
Most Trusted Reviews
Nearly identical to my oem part. Good quality and straight ... [Go to full review]
Nov 5, 2015
100%
TRUST
TRUST
- Verified Purchaser
- Take-Back Reviewer (9 deleted Reviews; avg. rating: 3.6)
- Brand Repeater (2 of 135 reviews for this brand; avg rating: 5.0)
- Critical Reviewer (avg. rating: 3.7)
Least Trusted Reviews
Fit as described no modifications [Go to full review]
Aug 27, 2015
0%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (5 words)
- Brand Repeater (3 of 10 reviews for this brand; avg rating: 4.3)
- Overrepresented Participation (posted 10 Reviews)
- Easy Grader (avg. rating: 4.8)
Analysis Details
Fail Suspicious Reviewers
One-Hit Wonders
2 of the 132 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 1.0 while the reviewers who have posted more than one review have rated this product an average of 4.8. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Take-Back Reviewers
20 of the 132 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.
Single-Day Reviewers
20 of the 132 reviewers have written multiple reviews but posted all of them on a single day. The Single-Day reviewers have rated this product an average of 4.1 while all other reviewers rated this product an average of 4.9. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Warn Brand Repeats
Brand Repeaters
37 of the 132 reviewers have reviewed other products for this brand. While this is more Brand Repeaters than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Brand Loyalists
5 of the 132 reviewers have reviewed multiple products but half or more of their reviews are for this brand. While this is more Brand Loyalists than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Warn Word Count Comparison
-
- 42%
- 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 56 reviews (or 42%) are within an overrepresented word count group. While this is more reviews from overrepresented word count groups than we'd expect to see, the discrepancy in ratings between reviews with overrepresented word groups and all other reviews isn’t significant enough to rule out the possibility of it being due to random chance.
Warn Reviewer Participation
-
- 69%
- From reviewers with an overrepresented participation
We see the following 3 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 91 reviewers (or 69%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Rating Trend
-
- 0%
- Created on high-volume days
We counted 132 reviews for this product over the span of 3,248 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
4 of the 132 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
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Titles:
2 reviews
4 reviews
2 reviews
11 of the 132 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
Reviewers of this product have ALSO reviewed the following products:
5% also reviewed:
AmazonBasics High Speed HDMI Cable by AmazonBasics
4% also reviewed:
SYLVANIA - H11 SilverStar Ultra - High... by SYLVANIA
4% also reviewed:
SanDisk Ultra microSDHC Card Plus Adapter by SanDisk
3% also reviewed:
FRAM HM3387A High Mileage Oil Filter by Fram
3% also reviewed:
Amazon Store Card by Synchrony Bank
3% also reviewed:
Ball Canning Regular Mouth Half Pint Canning Jar... by Ball
3% also reviewed:
SanDisk Ultra MicroSDXC UHS-I Card with Adapter by SanDisk
3% also reviewed:
TP-Link Archer CR1900 24x8 DOCSIS3.0 AC1900... by TP-Link
Does not include products
from the same brand
from the same brand
25 of the 132 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
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 4.4, while the average ease score for reviewers in this category is 4.5.
4.4 Product's Average Ease Score
4.5 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
-
- 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.
Pass Deleted Reviews
- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
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.