Impact Driver vs Combi Drill

Choose a combi drill when you need one tool for holes, ordinary screws and occasional masonry. Choose an impact driver for repeated long screws, structural fasteners and bolts where compact high fastening force is the priority.

They hold bits differently

A combi drill normally has a three-jaw chuck for round-shank drill bits and driver bits. An impact driver uses a quarter-inch hex holder and delivers rotational impacts. It is specialised for fastening and is not the default tool for accurate general drilling.

Torque figures are not directly equivalent

Impact drivers often advertise much larger torque numbers, but the mechanism and job are different. More torque can damage small fixings or materials if control and technique are poor. Use impact-rated accessories where required and follow fastener guidance.

Many projects use both

For decking, a drill can make pilot and clearance holes while an impact driver handles long fixings. For a household owner buying one first, the combi is normally more versatile unless demanding fastening clearly dominates.

List every job in the drill finder. It selects an impact driver only when screwdriving dominates and explains when drilling requirements point back to a combi.

Bosch Professional publishes separate impact-driver and drill ranges for comparison.