Milwaukee M12 FUEL 12-Volt Li-Ion Brushless vs Milwaukee M18 Compact Brushless 2-Tool Combo Kit
Updated July 2026 — Milwaukee M12 FUEL 12-Volt Li-Ion Brushless wins on length and weight, Milwaukee M18 Compact Brushless 2-Tool Combo Kit wins on sales rank and torque.
The Milwaukee M12 FUEL offers superior features and performance, but the M18 Compact is a more budget-friendly option.
Why Milwaukee M12 FUEL 12-Volt Li-Ion Brushless is better
Power
M12 FUEL has higher RPM and torque.
Battery
Includes dual battery packs for extended use.
Versatility
4-Mode Drive Control enhances functionality.
Why Milwaukee M18 Compact Brushless 2-Tool Combo Kit is better
Price
M18 Compact is approximately 32% cheaper.
Weight
M18 Compact is lighter, reducing fatigue.
Torque
M18 Compact has higher torque at 600 in. lbs.
Overall score
Specifications
| Spec | Milwaukee M12 FUEL 12-Volt Li-Ion Brushless | Milwaukee M18 Compact Brushless 2-Tool Combo Kit |
|---|---|---|
| Max Torque | 350 in. lbs | 600 in. lbs |
| RPM | 1700 | 1700 |
| Battery Type | M12 REDLITHIUM | M18 REDLITHIUM |
| Impact Driver | 4-Mode | 3-Speed |
| Weight | 2.8 lbs | 2.3 lbs |
Dimension comparison
Overview of the Products
When comparing the Milwaukee M12 FUEL 12-Volt Li-Ion Brushless Cordless Hammer Drill and Impact Driver Combo Kit with the Milwaukee M18 Compact Brushless 2-Tool Combo Kit, the M12 FUEL is priced at $369.97 while the M18 Compact is significantly cheaper at $252.45, making it about 32% less expensive. Both kits offer powerful tools for drilling and fastening, but they cater to different user needs and preferences.
Tool Performance
In terms of performance, the Milwaukee M12 FUEL Combo Kit features the M12 FUEL Hammer Drill Driver, which delivers a maximum torque of 350 in. lbs. and operates at 1,700 RPM. In contrast, the Milwaukee M18 Compact Kit includes the M18 Hammer Drill that reaches 600 in. lbs. of torque and operates at a slightly lower 1,700 RPM. While the M12 FUEL provides exceptional power in a lightweight design, the M18 Compact offers more torque, which could be beneficial for heavier tasks.
Portability and Weight
Portability is a crucial factor for professionals who often work in tight spaces. The Milwaukee M12 FUEL weighs 2.8 lbs, allowing for easy handling, especially in compact environments. The M18 Compact is even lighter at 2.3 lbs, which enhances its maneuverability. The M12 FUEL's compact size makes it suitable for jobs where space is restricted, but the M18 Compact's lighter weight can lead to less fatigue during extended use.
Battery and Charging
Regarding battery technology, the Milwaukee M12 FUEL Combo Kit includes an M12 REDLITHIUM 2.0 compact battery pack and an M12 REDLITHIUM XC 4.0 extended capacity battery pack. This dual battery setup allows for extended work time, which is beneficial for long projects. On the other hand, the M18 Compact Kit comes with an M18 REDLITHIUM XC4.0 battery and a CP2.0 battery pack. While both battery systems are designed for optimal performance, the dual battery setup in the M12 FUEL may provide a slight edge in prolonged usage for high-demand tasks.
Versatility and Features
Versatility is a strong point for both kits. The Milwaukee M12 FUEL Combo features a 4-Mode Drive Control for the impact driver, allowing for adjustments in speed and torque, including a self-tapping screw mode. This feature can enhance precision and reduce stripping of screws. The M18 Compact, while lacking the multiple modes, does have a 3-speed impact driver which still provides flexibility in various applications. Both systems are equipped with durable all-metal gear cases, ensuring long-term reliability.
Price Comparison
The price difference between the two products is quite significant. The Milwaukee M12 FUEL is priced at $369.97, while the M18 Compact is listed at $252.45. This makes the M18 Compact approximately 32% cheaper than the M12 FUEL. For those on a budget, the M18 Compact offers excellent value without sacrificing quality or performance, making it a compelling option for many users.
Sales Rank and Popularity
In terms of popularity, the Milwaukee M12 FUEL has a sales rank of 90,897, indicating a decent level of market interest. Meanwhile, the Milwaukee M18 Compact has a sales rank of 205,236, suggesting it may not be as widely purchased as the M12 FUEL. However, popularity does not always equate to performance, and both products have their unique strengths that appeal to different user segments.
Which should you buy?
Deciding between the Milwaukee M12 FUEL and the Milwaukee M18 Compact comes down to your specific needs. If you require a compact and lightweight tool for tight spaces with a robust dual battery system, the M12 FUEL is a strong choice despite its higher price. However, if you are looking for a more budget-friendly option with more torque and slightly lighter weight, the M18 Compact is about 32% cheaper and provides excellent performance for a variety of tasks. Both kits offer high-quality tools, but your choice should reflect your work environment and budget constraints.

