Name: AMERISUN Self Propelled Gas Lawn Mower, 21" with 170cc 4-Cycle OHV Engine 3-in-1 RWD Self-Propelled Lawn Mower (AV8621S1)
Brand: AMERISUN
SKU: AV8621S1

AVERAGE

Winnowl Index

Winnowl Verdict

Our audit of the AMERISUN Self Propelled Gas Lawn Mower results in an AVERAGE (73) Winnowl Index, flagging a "Spec-to-Reliability" gamble where hardware power outpaces brand history. The data shows AMERISUN delivers a Strong Performance rating, but we shows the manufacturer at Mediocre Brand Strength due to Average Brand Reliability. A Engine Displacement of 170 cc is above average in the class—implying you should find the engine maintains steady power through standard weekly cuts and moderate overgrowth—but all that hardware is undercut by Weak Brand Trust. We’d recommend a soft pivot from this Marketplace Gambler; that Strong Value is tempting, but the Mediocre Brand Strength is definitely the weak link.

Market Value Index

Strong

$349.00

Overpriced Fair High Value

Our audit identifies Strong Value because the hardware-to-dollar ratio beats the $371.29 average by 7%—just keep an eye on the manufacturer backing.

Performance Rating

Strong

Strengths

Neutrals

Weaknesses

This Strong Performance profile is powered by the Engine Displacement (170 cc); the data suggests you should find the engine maintains steady power through standard weekly cuts and moderate overgrowth, but the Cutting Width may be a bottleneck where you should effectively balance maneuverability with a path wide enough to clear a standard yard quickly.

Brand Strength

Mediocre

Trust

Reliability

Customer Service

AMERISUN scored Mediocre Brand Strength, based on Weak Brand Trust and Average Brand Reliability, increases the caution when considering this product.

Available At

$349.00 View Deal

The Winnowl Lab Report

Specification	Value	Rating	Vs. Average	Winnowl Insight
Engine Displacement	170 cc	Average	7% better	Standard residential displacement. This 160cc-170cc range is the industry benchmark for reliable, consistent lawn maintenance.
Cutting Width	21 inches	Average	1% worse	Full-size residential benchmark. The 21-22 inch deck is the gold standard for balancing speed, storage, and handling.
Warranty	2 Years	Average	6% worse	Standard industry backing. This 2-year window is the baseline for most reputable residential gas mower brands.
Cutting Height Adjustment	6 settings	Average	3% worse	Standard residential precision. Provides enough versatility to handle everything from low spring cuts to tall summer maintenance.

Ranking Factors

Insights

Value Rank: #7 out of 15.
Performance Rank: #9 out of 15.
Winnowl Quadrant: Budget

Neutral

A Cutting Width of inches is about average (21.30 inches) but narrower than the widest in class at 24 inches.
A Cutting Height Adjustment of settings is about average (6.20 settings) but not as many as the class max of 8 settings.
A Engine Displacement of cc is about average 159.33 cc but below the class max of 201 cc.

Weaknesses

Shortest Warranty in its class at 0 Years, well below longest in class at 3 Years.

Comparison

Name	Winnowl Index	Value	Performance	Brand	Price	Engine Displacement	Cutting Width	Warranty	Cutting Height Adjustment
AMERISUN Self Propelled Gas Lawn Mower	AVERAGE 73	Strong	Strong	Mediocre	$349.00	170 cc	21 inches	2 Years	6 settings
BILT HARD 21 Inch Self Propelled Gas Lawn Mower	STRONG 84	Strong	Exceptional	Average	$379.99	201 cc	21 inches	2 Years	8 settings
YARDMAX 24 in. Gas Walk Behind Self Propelled Lawn Mower	AVERAGE 76	Weak	Exceptional	Average	$602.42	201 cc	24 inches	2 Years	6 settings
Self Propelled Gas Lawn Mower	ELITE 45	Exceptional	Strong	Zero	$199.97	141 cc	21 inches	2 Years	6 settings