Milwaukee's M18 Fuel Won One Impact Test, Placed in Another

Milwaukee's M18 Fuel impact driver has enough of a reputation among tradespeople that it gets recommended almost reflexively, but reputation is not the same as a measured result. Two separate hands-on tests actually put the M18 Fuel on a torque gauge and a stopwatch against real competitors, and the outcomes were strong, though not identical in both tests.

What the testing showed

The numbers below come from two of Project Farm's independent hands-on tests, one covering 4 impact drivers and one covering 12, both including a Milwaukee M18 Fuel entry. The full breakdowns are on the 4-driver impact driver comparison and the 12-driver impact driver comparison.

The M18 Fuel won the smaller 4-driver test outright

In the 4-driver test against Makita's XDT16Z, DeWalt's DCF888BR, and a Bauer, Milwaukee's M18 Fuel, at 115.83 dollars, took first place on both major torque measurements: it won the tightening torque test outright, blasting past 900 PSI and running out of the 15-second test window at 1,600 PSI, and it won the looseningtorque test at 1,750 PSI. The test's own verdict was direct: "Milwaukee just ran away with this competition and did a terrific job." One flagged issue: the notes record it occasionally shut off mid-test and needed the trigger released and re-squeezed to keep going.

Makita's XDT16Z, the most expensive driver in that test at 167.03 dollars, finished runner-up, described as "slightly better than DeWalt." DeWalt's DCF888BR, despite carrying the highest claimed torque rating of the four at 1,825 in-lb, tied Makita for second on the tightening torque test rather than leading it.

In the larger 12-driver test, the M18 Fuel was runner-up

In a separate, larger comparison against 12 drivers, Milwaukee's M18 Fuel measured the highest no-load RPM of the entire field at 3,889, exceeding its own 3,900 RPM claim closely, and posted the best low RPM control of all 12 drivers at around 77 RPM, useful for starting screws precisely before the impact mechanism engages at full speed. It finished as runner-up on the overall average scorecard, behind DeWalt's 860, which won that particular test with a slightly faster average time on both timed driving tasks.

The rest of the smaller test's field shows the gap Milwaukee opened up

For context on how decisive Milwaukee's win was in the smaller 4-driver test, Bauer's 20V Hypermax, at 69.99 dollars with battery and charger included, finished last on both the tightening and looseningtorque tests and began smoking during the lag bolt test before stopping entirely, reaching roughly 300F. A later teardown found its motor brush bracket had failed structurally. That is the low end of the same field the M18 Fuel dominated, which helps explain why the test called Milwaukee's win a "run away" result rather than a close contest.

Two different results, two different tests

The honest read here is that the M18 Fuel won decisively when measured primarily on raw torque, in the smaller 4-driver test, and finished a close second when measured on speed and RPM-based tasks in the larger 12-driver test. Both are real, measured outcomes; they simply emphasize different performance dimensions.

How to read this for your own purchase

Milwaukee's M18 Fuel performed at or near the top of the field in both tests it appeared in, which is a stronger overall showing than most single-test wins provide.

If raw torque output is what you need, the smaller 4-driver test's tightening and looseningtorque results are the clearest data point in Milwaukee's favor, where it beat both Makita and DeWalt entries decisively.

If precision at low speed matters, such as starting screws in finish work without stripping the head, the 12-driver test's low RPM control result, the best of all 12 drivers measured, is the specific advantage to weigh.

If you are choosing between Milwaukee and DeWalt specifically, know both directions of this comparison exist in tested data: DeWalt's DCF888BR lost to Milwaukee's M18 Fuel in the smaller torque-focused test, while DeWalt's 860 beat the same Milwaukee M18 Fuel in the larger speed-focused test. Which DeWalt model you are comparing against changes the outcome.

A rule that holds across both tests: the M18 Fuel's occasional mid-test shutoff, noted in the smaller test, is worth being aware of even though it did not stop the tool from winning that comparison outright.

If you are deciding between Milwaukee's own M18 and M12 lines, note that these two tests only covered the M18 Fuel, not an M12 Fuel impact driver, so this specific data does not speak to that comparison within Milwaukee's own lineup. Stick to the tested model numbers above rather than assuming results generalize across Milwaukee's full battery platform range.

Taken together, both tests support the same conclusion from two different angles: when the M18 Fuel was measured primarily against raw torque output, it won decisively, and when it was measured against a wider field on speed and RPM tasks, it still finished at or near the top rather than fading into the middle of the pack. That consistency across two separate testing methodologies, years apart, is a stronger signal than either single result on its own.

Browse the rest of the power tools tested this same hands-on way for drills, wrenches, and grinders put through comparable head-to-head testing.