Makita GDT04ZvsXDT20Z
Two impact drivers, compared from their makers' published US specs. Specs checked 2026-10-18.
Makita GDT04Z
Max torque 2,040 in-lbsMax speed 0 - 1,200 / 0 - 2,100 / 0 - 3,000 / 0 - 3,900 RPMImpact rate 0 - 1,900 / 0 - 3,100 / 0 - 3,600 / 0 - 3,900 IPM
Paid link: we may earn a commission.
Find GDT04Z prices on Amazon Find GDT04Z prices at Acme Tools Opens the retailer in a new tab; the current price is shown there. Marketplace sellers vary: check the seller and exact model.Makita XDT20Z
Max torque 1,590 in-lbsMax speed 0 - 1,100 / 0 - 2,100 / 0 - 3,200 / 0 - 3,600 RPMImpact rate 0 - 1,100 / 0 - 2,600 / 0 - 3,600 / 0 - 3,800 IPM
Paid link: we may earn a commission.
Find XDT20Z prices on Amazon Find XDT20Z prices at Acme Tools Opens the retailer in a new tab; the current price is shown there. Marketplace sellers vary: check the seller and exact model.How to choose between them
- Already own Makita 40V max XGT batteries? The GDT04Z uses them; the XDT20Z needs Makita 18V LXT batteries and a charger.
- Already own Makita 18V LXT batteries? The XDT20Z is the one that fits what you have.
- Starting from nothing: this is a battery-system choice more than a tool choice; compare the kit versions (GDT04D, XDT20T), which add batteries and a charger.
From the published figures only; no testing. Rated figures from different makers are not measured the same way.
Where they differ
- Different battery systems: Makita 40V max XGT vs Makita 18V LXT. Batteries and chargers do not interchange.
- Makita GDT04Z: more torque (2,040 in-lbs vs 1,590 in-lbs).
- Makita GDT04Z: higher top speed (0 - 1,200 / 0 - 2,100 / 0 - 3,000 / 0 - 3,900 RPM vs 0 - 1,100 / 0 - 2,100 / 0 - 3,200 / 0 - 3,600 RPM).
- Makita GDT04Z: higher impact rate (0 - 1,900 / 0 - 3,100 / 0 - 3,600 / 0 - 3,900 IPM vs 0 - 1,100 / 0 - 2,600 / 0 - 3,600 / 0 - 3,800 IPM).
- Makita XDT20Z: shorter (tool length) (4-1/2 in vs 5-3/8 in).
- Both are bare tools: no battery or charger in either box.
6 of 11 listed specs differ or are listed by only one maker. Stated from the published figures only; no testing.
Every published spec, side by side
| Spec | Makita GDT04Z | Makita XDT20Z |
|---|---|---|
| Max torque (manufacturer rating)DiffersGDT04Z: +450 in-lbs (+28.3%) | 2,040 in-lbs | 1,590 in-lbs |
| Max speedDiffersGDT04Z: +300 RPM (+8.3%) | 0 - 1,200 / 0 - 2,100 / 0 - 3,000 / 0 - 3,900 RPM | 0 - 1,100 / 0 - 2,100 / 0 - 3,200 / 0 - 3,600 RPM |
| Impact rateDiffersGDT04Z: +100 IPM (+2.6%) | 0 - 1,900 / 0 - 3,100 / 0 - 3,600 / 0 - 3,900 IPM | 0 - 1,100 / 0 - 2,600 / 0 - 3,600 / 0 - 3,800 IPM |
| Tool lengthDiffersGDT04Z: +0.875 in (+19.4%) | 5-3/8 in | 4-1/2 in |
| MotorOnly one listed | Not on maker page | Brushless |
| Batteries in box | 0 | 0 |
| Battery capacity (each) | None included | None included |
| Charger in box | No | No |
| Chuck size | 1/4 in | 1/4 in |
| Speed settings | 4 | 4 |
| Weight with batteryDiffers | 4 lbs | 3.3 lbs |
"Differs" marks different published values; pure formatting is not counted. "Only one listed" marks a spec only one maker page gives. Box contents, owner ratings, manuals and sources are on each model's own page: GDT04Z, XDT20Z. Swap either model in the compare tool. copied
Makita GDT04Z
Max torque 2,040 in-lbsMax speed 0 - 1,200 / 0 - 2,100 / 0 - 3,000 / 0 - 3,900 RPMImpact rate 0 - 1,900 / 0 - 3,100 / 0 - 3,600 / 0 - 3,900 IPM
Paid link: we may earn a commission.
Find GDT04Z prices on Amazon Find GDT04Z prices at Acme Tools Opens the retailer in a new tab; the current price is shown there. Marketplace sellers vary: check the seller and exact model.Makita XDT20Z
Max torque 1,590 in-lbsMax speed 0 - 1,100 / 0 - 2,100 / 0 - 3,200 / 0 - 3,600 RPMImpact rate 0 - 1,100 / 0 - 2,600 / 0 - 3,600 / 0 - 3,800 IPM
Paid link: we may earn a commission.
Find XDT20Z prices on Amazon Find XDT20Z prices at Acme Tools Opens the retailer in a new tab; the current price is shown there. Marketplace sellers vary: check the seller and exact model.Sources
- Makita US product page GDT04Z, retrieved 2026-10-18
- Makita US product page XDT20Z, retrieved 2026-10-18
Spotted a wrong number? Report a spec error (opens an email with both models filled in). We re-check against the makers' pages and correct the page.
Researched by Rob, licensed electrician (Australia), 18 years on the tools. Found an error? Tell us.
We may earn a commission if you buy through our links. Retailer links are paid links; commission never changes what we publish. Affiliate disclosure.