450 against 500 litres an hour
Bosch or Kärcher at the 140 to 145 bar level?
Both publish pressure and flow, so for once the numbers can be laid side by side without guesswork. The decision comes down to the accessory ecosystem.
| Compared on | AdvancedAquatak 140 | K 5 FJ |
|---|---|---|
| Maximum pressure | 140 bar | 145 bar |
| Flow rate | 450 l/h | 500 l/h |
| Power | 2 100 W | Not stated |
| Storage | Integrated compartment | Accessory holders on the body |
| Fitting | Bosch connector | Kärcher bayonet |
| Markets verified | Five | Five |
A tick marks the better answer on that line only. Counting ticks does not decide the page — the two verdicts below do, because these machines answer different questions.
Buy the Bosch if you already own Bosch accessories, or if the integrated storage matters — and note that it is the only Bosch on this site that publishes a flow rate.
Buy the Kärcher for the extra fifty litres an hour and the far larger accessory range. On a long drive that flow difference is time, every session.
About ten per cent off the time on any surface large enough to matter. It is not dramatic, and it is real. On a car neither machine is the limiting factor.
For many people, yes. Kärcher’s bayonet has the largest domestic accessory range; Bosch’s connector has a smaller one but its listings name the compatible machines, which removes the most common wasted purchase.
140 bar · 450 l/h · 2 100 W · integrated storage
The Bosch that finally publishes a flow rate — 450 l/h, which is what the UniversalAquatak machines never gave you.
Best for: A drive, a terrace and vehicles, for someone already inside the Bosch accessory system
≈ £235 / 200 €
145 bar · 500 l/h · 40 m²/h · 6.3 kg
Five hundred litres an hour and a fixed handle: the point in the range where the machine stops being carried and starts being wheeled.
Best for: A long drive, a large terrace or several vehicles — where flow rate, not pressure, sets the finishing time
≈ 250 €
