The bottom line The most completely specified machine in this comparison. Buy it for reach and independence, not for a terrace.
The Güde Fuel 250 publishes the pair of numbers this whole site argues for: 234 bar of working pressure and 590 l/h of flow, from a 5.9 hp four-stroke engine, through a 9 m hose.
The complete specification
Pressure breaks the bond between dirt and surface. Flow carries the dirt away. Publish only one and a buyer cannot tell whether a machine is fast or merely forceful. Publish both, as here, and the comparison becomes arithmetic: 590 l/h is around 18 % more water than the Kärcher K 5’s 500 l/h, at roughly 60 % more pressure.
The consequence on soft surfaces
At this level, technique stops being a preference. Softwood decking, render, lime mortar, painted metal and window seals all fail before the machine does. Start far away, use the widest fan that works, and treat the 0° nozzle as a tool for concrete and drains only.
Independence, and its price
No cable, no socket, no limit on where the machine goes. In exchange: fuel, oil, an air filter, a plug, winter storage, and a strict rule against running it in any enclosed space.
Availability
One reference across Germany, the UK, France, Italy and Spain. Not sold on Amazon’s US store.
What we like, and what we don't
Strengths
Working pressure AND flow rate published — the complete pair, which is rare anywhere
590 l/h is more water than any electric machine in this comparison
Nine metres of hose
Compromises
234 bar is professional pressure with domestic consequences on soft surfaces
Petrol maintenance, and no use indoors
Not sold on Amazon's US store
Specifications
Working pressure
234 bar
Flow rate
590 l/h
Engine
5.9 hp four-stroke
Hose
9 m
Detergent
Detergent feed included
Amazon reference
B0G1QLTSZQ
EAN
4015671804266
Questions people actually ask
Why does the pair of figures matter so much?
Because pressure lifts dirt and flow carries it away, and a machine strong in one and weak in the other disappoints in a way the box never explains. 234 bar with 590 l/h is a genuinely fast combination on hard surfaces. Most listings publish one number, or a peak figure that describes nothing.
Is petrol worth it if I have a socket?
Usually not. A good electric machine at 130 to 150 bar with 450 to 500 l/h cleans a domestic terrace perfectly well, starts instantly, and needs no oil changes. Petrol earns its place where there is no power, or where the machine works for hours at a time.
Our score
8.4/ 10
The most completely specified machine in this comparison. Buy it for reach and independence, not for a terrace.
Who this one is for, among cleaning machines
Farmyards, contractors and large properties without power at the far end
Set beside the neighbouring cleaning machines
cleaning machines from the same category, at nearby prices. Only what all of them publish is shown: a column with holes compares nothing.
Pressure Washer Bar or Litres per Hour? The Number That Decides | CleanVerdict
Petrol or Electric Pressure Washer? | CleanVerdict
Price and availability, for cleaning machines
A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom. Listed is not the same as in stock — availability changes daily.
Details checked on August 15, 2026.
Sources
Specifications: the manufacturer sheet for cleaning machines and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.