Bosch GDX 18V-200 Impact Driver UK Review

The Bosch GDX 18V-200 occupies a distinctive position in our best cordless impact drivers UK comparison as the only true two-in-one tool in the group. The GDX accepts both quarter-inch hex bits for standard impact driver use and half-inch square drive sockets for impact wrench applications – a dual-mode capability that no other driver in our comparison offers. At 200 Nm of maximum torque it is competitive with the DeWalt DCF887 at 205 Nm and meaningfully ahead of the Makita DTD153Z at 165 Nm, while its brushless motor delivers efficiency that matches the premium rivals.

For a UK buyer who regularly works with both screws and nuts and bolts – fitting decking, assembling garden structures, working on bikes or light automotive tasks – the GDX 18V-200’s socket compatibility removes the need for a separate impact wrench for occasional use. That versatility is the tool’s defining selling point, and whether it justifies the choice over a more focused impact driver depends entirely on how often socket drive is genuinely needed in practice.

Overview and first impressions

The GDX 18V-200 is instantly recognisable as a Bosch Professional product – the blue livery, the solid build and the quality feel that Bosch maintains consistently across its trade range. The body length is 156mm, slightly longer than the compact rivals in our comparison but still manageable in most confined-space situations. At 1.16kg bare it is slightly heavier than the DeWalt DCF887 but comparable to the Makita and Milwaukee, and the weight distribution feels well-balanced in use.

The dual-mode chuck is the standout physical feature. A sleeve on the front of the tool rotates to switch between hex and square drive modes – a smooth, positive action that takes about three seconds to execute. In hex mode it accepts all standard quarter-inch impact bits. In square mode it accepts half-inch impact sockets directly, without an adaptor. The transition between modes is reliable and the bit retention in both modes is secure – there is no play or rattle in either configuration.

The three-speed selector covers the standard range – precision, general fastening and full power – and the brushless motor delivers a trigger response that is comparable to the DeWalt and Milwaukee in Mode 1. Build quality throughout is very good. The LED work light is bright and well-positioned, and the forward/reverse switch has a positive feel through its positions. The body texture and grip ergonomics favour sustained one-handed use effectively, with the grip diameter and angle sitting naturally in the palm without requiring deliberate repositioning between Mode 1 finesse work and Mode 3 structural driving.

Specifications and scores

How it performed in our tests

In hex mode the GDX 18V-200 performed very well across all standard impact driver tasks. Driving 75mm structural screws in Mode 3 was confident and consistent, and the brushless motor’s trigger response in Mode 1 for precision work matched the quality of the DeWalt and Milwaukee brushless alternatives. The 200 Nm torque is not the highest in our comparison – the DeWalt DCF887 edges it at 205 Nm – but the practical difference is imperceptible on typical UK domestic fastening tasks.

In square drive mode the tool handled half-inch impact sockets cleanly on M8 to M12 nuts and bolts – the sort of fastener sizes encountered in flat-pack furniture assembly, deck construction and light automotive work. The mode switch between hex and square is quick and positive, and the socket retention is secure with no movement or rattle once locked. For a buyer who genuinely needs both modes, this dual capability from a single tool is a compelling practical proposition. We tested deck bolt installation across twenty M10 coach bolts fitted through 47mm decking timber – the GDX handled all twenty without slowing or losing power, with consistent torque delivery from first to last.

Battery system and runtime

The GDX 18V-200 runs on Bosch’s 18V ProCORE platform – a professional battery system used across the full Bosch Professional blue tool range. ProCORE batteries are available at Screwfix, Toolstation and specialist trade suppliers. The platform is well-established in the UK trade market, particularly among builders and contractors who already use Bosch Professional drills, circular saws and SDS drills. For buyers starting fresh without existing Bosch tools, ProCORE availability is broadly comparable to Milwaukee M18 – solid trade coverage but not as ubiquitous in mainstream DIY retail as DeWalt XR.

The brushless motor delivers good efficiency and the 200 Nm torque is delivered without the hard current spikes that drain batteries quickly in brushed alternatives. A 4.0Ah ProCORE battery provides a full day of typical mixed fastening and socket work for domestic users. The ProCORE battery’s cell chemistry is optimised for high-current applications, which benefits the GDX 18V-200 in square drive mode on stubborn fasteners more than in standard hex driver use.

Performance and limitations

The GDX 18V-200’s dual-mode capability is its strongest selling point and also the source of its main limitation. The 156mm body is longer than any other impact driver in our comparison because the dual-mode chuck mechanism adds length at the front. In very tight confined spaces that extra 16-20mm over the DeWalt DCF887 can occasionally matter. The tool is also slightly heavier at 1.16kg bare. These are minor practical costs for a tool that offers genuine two-in-one functionality, but worth noting for buyers whose work is primarily in confined spaces.

The ProCORE battery platform also warrants a specific note for buyers considering this tool. ProCORE batteries are physically larger than standard 18V Bosch batteries and deliver higher current output – they are not cross-compatible with older Bosch 18V standard batteries (though they do fit tools designed for them). For existing Bosch Professional users this is a non-issue; for first-time Bosch buyers it means starting a new battery collection rather than supplementing an existing one. Confirming which Bosch platform any existing tools use before purchasing is worth the moment’s investigation it takes.

Final verdict – is it worth it?

The Bosch GDX 18V-200 is a well-made, brushless impact driver that earns its place in the comparison through a capability no other driver here offers – genuine dual hex and square drive from a single tool. For a buyer who regularly works with both screws and socket fasteners, that versatility removes the need to carry or purchase a separate impact wrench for occasional use, and the 200 Nm torque and brushless motor mean the driver mode is genuinely competitive rather than a compromise. The tool succeeds because the dual-mode design does not compromise either mode – it is a proper impact driver in hex mode and a proper socket driver in square mode, not a diluted version of either.

Where the recommendation becomes more qualified is for buyers who rarely or never need socket drive. In pure impact driver mode the GDX 18V-200 is excellent but marginally outpointed on torque by the DeWalt DCF887 and on platform breadth and warranty by the Milwaukee M18 BLID2. The longer 156mm body is also a minor but real disadvantage in tight spaces compared to the more compact alternatives. For buyers who do not need the dual-mode capability, the DCF887 is the stronger focused choice at a similar price.

For existing Bosch Professional ProCORE users the decision is easier – the GDX 18V-200 slots straight into an existing platform with no battery investment required and delivers a specification that is genuinely impressive for the price. The dual-mode capability is a bonus on top of a solidly performing brushless impact driver, and at this torque level with this build quality it represents strong value for anyone already running ProCORE tools.