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Milwaukee M18 2656-20 1/4in Hex Impact Driver: problems, parts and running costs

Checked: 2026-10-11

Summary

No owner-reported failure modes were found for this model in the research inputs; the documented cautions are a tool-only purchase with no battery or charger, a brushed non-FUEL design competing against newer compact drivers, normal-wear parts excluded from the 5-year warranty, and no independent instrumented test of the exact tool. Yearly running cost is effectively zero because the driver uses no consumables; the only possible outlay is service parts if they wear. No non-Amazon retail price was captured, so no price threshold can be set from the sources.

Common problems and fixes

Parts and consumables

Yearly running cost

The driver uses no consumables, filters or subscription, so there is no recurring cost to compute. The only possible outlay is service parts (chucks, brushes, seals) if they wear, and no price or interval for them appears in the sources. Not enough data for a yearly figure.

When it is a good buy

No non-Amazon retail price was captured in this research pass (“No price found in this pass from non-Amazon retailers”), so no price threshold can be set from the sources. For a shop already running M18 batteries, the 2656-20 is a low-cost brushed driver backed by a 5-year warranty with no registration required and published parts lists; for a buyer new to the platform, the battery and charger spend lands on top of the sticker. Named alternatives: the 2-speed 2657-20 from the same manual if you need two speeds; a newer compact brushless driver if you want brushless performance; and an M18 battery and charger kit if you are new to the platform, because the bare 2656-20 ships with neither. [1][2][3]

Sources