Independent testing
How much independent testing exists for each impact driver
Of the 6 impact drivers we track, 6 have been physically measured by at least one independent lab. Below is every one, ordered by how much independent hands-on evidence stands behind it — densest first.
A coverage record, not a ranking of which is best.
| Product | Independent labs | Metrics measured | Outlets on record |
|---|---|---|---|
| 20V MAX XR 3-Speed 1/4 in. Impact Driver (Tool Only) | 1 | 5 | 1 |
| 20V MAX XR 3-Speed 1/4 in. Impact Driver (Tool Only) | 1 | 3 | 1 |
| M18 FUEL 1/4 in. Hex Impact Driver (Tool Only) | 1 | 3 | 1 |
| 18V Freak Connected-Ready Two-In-One 1/4 in. & 1/2 in. Impact Driver (Bare Tool) | 1 | 2 | 1 |
| 18V LXT Brushless Quick-Shift Mode 4-Speed Impact Driver (Tool Only) | 1 | 2 | 1 |
| 18V Brushless Triple Hammer Impact Driver | 1 | 1 | 1 |
Each figure is a count of what independent testers actually did — how we count. A low count means little independent evidence has been gathered yet, never that a product is worse. See also the Impact Drivers buying guide and the reviewers we cite.