Autonomous ErgoChair Pro vs SIHOO M18

Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.

Autonomous

Autonomous ErgoChair Pro

$499

SIHOO

SIHOO M18

$289.99 – $299.99

$209.01

lower starting price for SIHOO M18 than Autonomous ErgoChair Pro at the brand stores

Differences at a glance

Autonomous ErgoChair ProSIHOO M18

Price: $499$289.99 – $299.99
Seat height: 18.5–22 in (47–55.9 cm)44–54 cm
Seat depth: 19–21.5 in (48.3–54.6 cm)17.91 in (≈ 45.5 cm)
Load capacity: 300 lb (136.1 kg)330 lb (≈ 150 kg)
Recline: Synchro-tilt; 22° recline range; 5 lock positions (Donati reclining mechanism)Maximum 126° recline angle
Arms: 3D armrests; armrest height 11–14 in from seatAdjustable armrests (Up and down)
Headrest: Adjustable headrest (standard)Headrest moves 3.9" up and down and pivots 45°
Lumbar support: Sliding (height-adjustable) lumbar; 6 in lumbar height rangeLumbar support adjusts vertically and horizontally
Warranty: Lifetime warranty3 years

From 36 Autonomous ErgoChair Pro and 5 SIHOO M18 user reviews, most mentioned first. Green is liked, orange is a caution.

Which is cheaper, the Autonomous ErgoChair Pro or the SIHOO M18?

The SIHOO M18 is cheaper to start: $289.99 versus $499 for the Autonomous ErgoChair Pro at the brand stores (Sep 2026).

Which has a higher weight capacity?

The SIHOO M18, rated for 330 lb versus 300 lb for the Autonomous ErgoChair Pro.

Which has a headrest?

Both: the Autonomous ErgoChair Pro as standard and the SIHOO M18 as standard.

What do owners mention most?

Price and value for the Autonomous ErgoChair Pro, and price and value for the SIHOO M18, based on review summaries.