Updated 29 Oct 2026
Is the Bosch Fontus 18V Cordless Outdoor Cleaner worth it?
Only if you need to clean away from a tap and a socket.
It carries 15 litres of water in its own wheeled tank and runs on an 18 V battery, so you can rinse bikes, muddy boots, a car or garden furniture anywhere, or plug in a garden hose at home. There are three pressure settings, four spray patterns and a brush. At 20 bar it's a strong rinse rather than a true pressure washer: it won't shift tough patio stains, and full of water it's heavy to lift into a car. A mains washer many times stronger costs less.
Good to know
- 20 bar won't shift tough stains.
- Heavy to lift once the tank is full.
- Expensive for its power.
- The brush wears over time.
- 15-litre tank, no tap needed
- Up to an hour per battery
- Three pressure settings and a brush
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Get it if…
- You wash bikes or a car after a muddy ride or walk.
- You have no outdoor tap or socket.
- You already own Power for All 18 V batteries.
Skip it if…
- You clean patios and drives: any mains washer is far stronger.
- You want the lightest option: the Worx Hydroshot is a handheld gun.
More on the Fontus 18V
How we reached this verdict
Trusted Reviews found it a portable, flexible cleaner for bikes and cars, but too weak for the toughest jobs and expensive. T3 calls it a great choice for convenience, with about an hour of battery and versatile attachments, but found the low pressure disappointing and the brush wore over time. MBR found it heavier and less portable than the Worx Hydroshot, but better made, slightly more powerful side by side, and with no need to find a water source.
We compared independent expert reviews with the manufacturer's specifications, then checked it's sold at a major retailer where you live. We don't test products ourselves.
Sources: Trusted Reviews, T3, MBR, Bosch, Expert Reviews, Expert Reviews: K4 Power Control, Trusted Reviews, T3, BBC Gardeners' World, manufacturer specifications.
Updated 29 Oct 2026How we decide