Logitech MX Ergo S: problems, parts and running costs

Checked: 2026-10-19

Summary

A right-handed thumb trackball with a 0°/20° magnetic tilt base, quiet main clicks and a battery Logitech rates at up to 120 days, listed at $99.99 on Logitech’s own site in October 2026. Owners report early main-click failures and an aging soft-touch grip, and Logitech sells no spare parts and covers the S for one year only. Keeping it running costs little day to day, but a failed switch means board-level repair or replacement.

Common problems and fixes

Main left click stops registering early — an owner reported missing left clicks after about five months of use; the quiet switches are soldered and Logitech lists no spare parts, so repair means desoldering or a warranty claim. [8][7][3]
Sticky, aging soft-touch grip — an owner reported a tacky grip and a dead left click in under two years; no replacement shell is sold. [9]
Side buttons awkwardly placed or intermittent — side-button hold failures reported after several months; Digital Camera World also found the side buttons awkward for some grips. [10][5]
Wheel tilt intermittent behavior — reported in CAD use; the root cause was never diagnosed. [11]
Thumb-ball learning curve and large shell — the 132.5 mm body is poor for small hands, and adaptation runs from one to two hours of text editing to about a week in video editing. [5][6][2]
No USB-C cable in the box — a charging cable must be supplied separately, even at the $99.99 price. [1][3][5]
Bearing grit and ball contamination — the ball pushes out through a base aperture for wiping; no verified bearing life is published. [3][5]

Parts and consumables

Logi Bolt USB receiver (part 956-000007) — $14.99 spare; USB-A form factor, listed temporarily sold out at check time. [3][16]
USB-C charging cable — Logitech’s 1 m cable is $9.99; a generic USB-C cable also works. [1][17]
Replacement trackball (Perixx PERIPRO-303, 34 mm) — $11.99; its compatibility list names the original MX Ergo, not the MX Ergo S. [18][7]

Yearly running cost

No recurring subscription or consumable is reported: Logi Options+ is free and the internal battery recharges over USB. The only possible out-of-pocket items are one-off replacements (Bolt receiver $14.99, USB-C cable $9.99, third-party 34 mm ball $11.99) and an unquantified repair cost if a soldered click switch fails outside the one-year warranty. Exact annual energy cost is not calculable from the sources.

When it is a good buy

Logitech’s own site listed the standard S at $99.99 in October 2026, marked down from $119.99 with the promotion running through November 1, 2026; other Logitech catalog pages vary between $109.99 and $119.99. Marketplace offers ran higher: $109.95 from the Techorama seller at Walmart and $117.99 from a Newegg marketplace seller. Below $80 from an authorized seller the S is strong value for a desk that needs 20° tilt and dual-host Flow. From $80 to $100 it is reasonable if you will use the buttons and the angle. Above $100 it is fair only with an assured support route, and the $39.99 M575S covers most basic trackball needs. The $69.99 Lift is the easier choice if a handshake mouse suits you better than a thumb ball. [1][12][13][14][15]

[14][15]