Logitech G640: problems, parts and running costs

Checked: 2026-10-27

Summary

The G640 is a 460 x 400 mm, 3 mm cloth pad with a rubber base and no stitched edges, so fraying and coating wear are the main durability risks. Running cost is the pad itself: heavy users may replace it every 4-8 months, while some owners report 2+ years of trouble-free use. At the official $29.99 it is strong value; above about $40, stitched-edge alternatives deserve comparison.

Common problems and fixes

Coating wears; glide slows and changes — owners report the surface coating wears off, changing glide and slowing the pad, with a break-in period. Washing can revive glide, but heavily used spots stay slower. Not covered by warranty (wear, not defect). [13][14][16][18]
Thin feel transmits desk bumps — at 3 mm with little sponginess, desk imperfections can be felt through the pad. Not a defect. [6]
Tracking variation with non-Logitech mice — PCMENA reports slightly less precise tracking with non-Logitech mice, consistent with Logitech’s sensor-optimization claim. This is a design match issue, not a defect. [2][8]
Cleaning is risky; worn fibers do not recover — machine washing is risky without stitched edges; use mild soap and lukewarm water, rinse, air-dry flat, and avoid heat and aggressive brushing. Owners report gentle microfiber wiping under light running water works better than bare-hand scrubbing, and some report success with laundry detergent. Worn fibers do not recover; the rubber base usually outlasts the cloth. [11][13][18][19][20][21]
High-sensitivity users find it clunky or heavy — some owners report the pad feels heavy or clunky at high sensitivity. Not a defect; it is a control-focused surface. [12]
Accelerated wear under heavy daily use — one accelerated wear test (500 hours at 300 mm/s, 50 g) suggests 4-8 months of heavy use before noticeable wear, with a 5% tracking-deviation replacement indicator. This is a single low-trust source, not manufacturer data. [11]
Rolled packaging leaves a slight curl — the pad arrives rolled and can keep a slight curl at the ends for a few hours. Flattens on its own. [5][6]

Parts and consumables

Logitech G640 pad (whole unit) (part number 943-000799) — $29.99 at the Logitech US store (October 2026); no spare parts or repair channel exists, so the whole pad is replaced. Owners report 4-8 months of heavy use or 2+ years of lighter use before replacement. [1][2][3][8][11][17]
No other consumables — there is no battery, filter or pod; the rubber base usually outlasts the cloth. [11]

Yearly running cost

$0 in electricity or subscriptions. Cost is replacement of the pad itself: at $29.99 per pad, a heavy user replacing every 4-8 months buys roughly one to three pads a year, while a light user reporting 2+ years buys under one pad a year. Cleaning uses mild soap and water only. The 4-8 month figure comes from one low-trust accelerated test, not manufacturer data, so treat the yearly figure as a range, not a precise number. [2][11][17]

When it is a good buy

At $29.99 (Logitech US store, October 2026): strong value as a balanced control cloth pad that is widely available and cheap to replace. [2][7]
Above roughly $40: compare stitched-edge alternatives that may last longer. [6]
DiamondLobby reported ~$38 / £34 / €39.99 at review time. [6]

Alternatives: the G640 SE or team editions when you want stitched edges that resist fraying (they are reported to feel slightly slower) [4][17]; the smaller G240 when desk space is tight [2][4]; the hard-surface G440 when you prefer a hard surface [1][4]; the desk-sized G840 when you want full-desk coverage [4].