At a glance
The Bosch GOP 18V-28 is the professional-grade brushless oscillating multi-tool in Bosch’s 18V ProCORE range. Bosch has a long history with oscillating multi-tools – the GOP line predates the cordless format and Bosch accessories for the system have genuine breadth and quality. The 18V-28 brings brushless motor technology to the cordless format, pairing it with Bosch’s Starlock Max blade attachment system and the ProCORE battery platform for compatibility across Bosch’s professional 18V range.
We tested the GOP 18V-28 across the same renovation tasks used to assess the other multi-tools in this comparison – undercutting door casings for flooring, grout removal from ceramic tiles, plunge cuts into timber, sealant removal and detail sanding in corners. The Bosch Starlock Max blade system is a genuine differentiator and understanding how it performs in practice alongside the motor and ergonomics gives a complete picture of where this tool sits in the comparison.
Overview and first impressions
The GOP 18V-28 has a more conventional multi-tool shape than the slim barrel-grip DeWalt and Makita. The larger body gives a bit more surface area to grip during heavy work but makes access into tight spaces slightly less elegant. At 1.6kg body only it is the heaviest of the four brushless models in this comparison, which becomes noticeable during extended overhead work. The build quality is solid throughout – Bosch Professional tools are built to a consistent standard and the GOP 18V-28 does not disappoint on this front.
The Starlock Max blade attachment is the standout feature of the Bosch system. Unlike the universal hex-bolt or push-button systems used by other manufacturers, Starlock uses a bayonet-style fitting that locks automatically when the blade is pushed onto the spindle – no levers, no collars, no tools. Blade removal is equally instant. The system is fast, positive and completely tool-free, and it works exclusively with Starlock-compatible blades. This creates a trade-off: blade change speed is excellent, but the selection of Starlock-specific blades is narrower and typically more expensive than universal blades. The included universal adapter extends compatibility but removes the Starlock change-speed advantage.
The GOP 18V-28 uses Starlock Max blades natively. The automatic blade fitting works only with Starlock Max compatible accessories. A universal adapter is included for other blade formats, but using it requires a tool for tightening and removes the key Starlock advantage. Budget for a set of Starlock-specific blades alongside the tool.
Specifications and scores
The GOP 18V-28 covers 8,000 to 20,000 OPM with a continuous variable dial and an oscillation angle of 2.8 degrees – between the DeWalt’s tight 1.6 and the Milwaukee’s wide 3.4. This positions it as a balanced all-rounder in terms of cutting speed versus vibration, though in practice the differences between 2.8 and the other angles are subtle rather than dramatic. The ProCORE battery platform uses Bosch’s 18V batteries across Professional tools, with the 4.0Ah and 5.5Ah options covering the range of renovation and light-trade use.
How it performed in testing
Undercutting door casings produced clean, accurate results. The brushless motor handled the load without stalling and the cut depth was consistent throughout. The slightly larger head compared to the DeWalt and Makita required a bit more care when positioning flat on the floor surface, but in practice the difference was minor in this application. Where a wider head creates more of a challenge is in very confined spaces – inside a cupboard, under a low radiator – where the compact form factor of the DeWalt gives it a practical edge.
Grout removal demonstrated average-to-good performance. The 2.8 degree oscillation angle sits between the aggressive Milwaukee and the precise DeWalt, and the real-world result reflects that – reasonable speed without the vibration trade-off of the wider-angle Milwaukee. The Starlock blade performed well in this application and the automatic blade fit meant switching from a grout blade to a scraper was genuinely fast when working through the bathroom, making the Bosch the most practical of the four for mixed blade-change work once Starlock accessories are invested in.
Invest in a Starlock blade set from the outset. The GOP 18V-28’s best feature – the automatic blade change – only delivers its full advantage when used with Starlock-compatible accessories. A mixed set of Starlock grout, segment, scraper and sanding pad blades bought alongside the tool gives you the genuinely fast no-tool blade changes that make this system stand out.
Battery and runtime
The GOP 18V-28 runs on Bosch’s 18V ProCORE platform, which covers the professional Bosch range across multi-tools, hammer drills, jigsaws, circular saws, grinders and garden tools. The ProCORE battery format is shared across all Professional 18V tools. For renovation work the 4.0Ah and 5.5Ah batteries cover most session lengths without needing mid-session charging, and the brushless motor’s efficient power use means the effective runtime per charge is competitive with the other brushless tools in this comparison.
Performance and limitations
The GOP 18V-28 performs to a solid standard across all test applications but does not lead the group in any of them. The Starlock blade system is the single clear advantage over the competition – for users who commit to the Starlock accessory ecosystem it is genuinely the fastest blade change system, matching or beating even the DeWalt Quick-Change lever. Outside of that specific advantage, the performance profile across grout removal speed, vibration levels and compact access puts the Bosch consistently in the competent rather than exceptional bracket.
The larger body and higher weight at 1.6kg are the main practical limitations against the lighter competition. In normal horizontal and vertical renovation work the weight difference is minor. In overhead and confined-space work – the applications where multi-tools earn their keep most frequently – the gap becomes more noticeable. The ProCORE battery platform is extensive and well-supported across the UK trade and DIY market, which is a genuine long-term asset for the platform decision.
- Starlock automatic blade fit is genuinely fast with compatible blades
- Lowest body-only price of the four brushless models
- Solid brushless performance consistent under load
- ProCORE platform well supported in UK market
- Heaviest of the four at 1.6kg body only
- Starlock accessory costs higher than universal blades
- Larger body reduces access in tight spaces
- Does not lead the group in any performance category
- Existing Bosch ProCORE users adding a multi-tool
- Users willing to invest in the Starlock accessory system
- Buyers wanting the lowest body-only price in the brushless group
- Platform-agnostic buyers – DeWalt edges it on overall performance
- Users needing frequent access into very confined spaces
- Anyone who wants to use a wide range of non-Starlock blades
Final verdict – is it worth it?
The Bosch GOP 18V-28 is a capable, well-built brushless multi-tool that earns fourth place in this comparison on solid rather than exceptional performance. The Starlock blade system is a genuine differentiator for users who commit to the Bosch accessory ecosystem – the automatic blade fit is fast and reliable and makes frequent blade changes in mixed-application renovation work genuinely convenient. The brushless motor delivers consistent performance and the ProCORE platform is well supported across the UK market.
The fourth-place ranking reflects where the tool sits against the competition rather than a meaningful weakness. At approximately £115 body-only it is also the most affordable of the four brushless options, which improves the value calculation for buyers whose first priority is not outright performance leadership. For existing Bosch ProCORE users the decision is simple – the GOP 18V-28 is the correct multi-tool for the platform and the price is fair for a brushless tool of this quality.
For buyers starting fresh, the DeWalt DCS355 edges ahead on performance and has an arguably better blade change system in the Quick-Change lever. But the price difference is small and the Starlock advantage is real for anyone who invests in the accessory ecosystem. The Bosch is not a compromised choice – it is simply a tool that does not lead the group in the areas that matter most for platform-agnostic buyers.
A solid brushless multi-tool with the standout Starlock automatic blade system. Ranks fourth on overall performance but the gap to the podium places is narrow. For Bosch ProCORE users it is the straightforward choice. For fresh buyers the DeWalt edges it, but the Bosch is far from a bad option at the price.
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