Torn between buying a BOSCH AdvancedAquatak or KARCHER K4 pressure washer?
Bosch/Karcher manufacture quality pressure washers, with the AdvancedAquatak 140 and K4 Power Control Flex reflecting just that. We compared the Karcher K4 Power Control Flex and Bosch AdvancedAquatak 140, analysing features, power, performance, and reviews.
Karcher K 5 Power Control Flex
Best pressure washer pick, beating all comparable BOSCH pressure washers on value and performance.
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Get DealHow AdvancedAquatak 140 and K4 Power Control Flex Pressure Washers Work
Bosch AdvancedAquatak and Karcher K4 pressure washers use a 2100 W and 1800 W (Watt) electric motor to draw up water, which is pressurised to 140 and 130 bar, respectively. Water is forced through BOSCH 140 AdvancedAquatak and KARCHER Power Control Flex K4 jet nozzle lance, creating a powerful stream of water used to clean dirty surfaces.
The AdvancedAquatak and K4 can clean cars, vans, paving stones, decking, and all types of outdoor items. With 140 and 130 bars of pressure, the Bosch AdvancedAquatak and Karcher K4 are built to blast away stains, grime, moss, mud, and dirt from hard surfaces.
BOSCH AdvancedAquatak Specs

- Pressure Washer Brand: BOSCH
- Model: AdvancedAquatak
- Series: 140
- Power(W): 2100 W
- Pressure(bar): 140
- Flow rate(litres per minute): 7.50 l/min
- Hose Length(metres): 8m
- RRP: £328.00
KARCHER K4 Specs

- Pressure Washer Brand: KARCHER
- Model: K4
- Series: Power Control Flex
- Power(W): 1800 W
- Pressure(bar): 130
- Flow rate(litres per minute): 7.00 l/min
- Hose Length(metres): 8m
- RRP: £249.00
BOSCH AdvancedAquatak and KARCHER K4 Motor Wattage and Bar Pressure
Karcher K4 and Bosch AdvancedAquatak pressure washers power is measured by their wattage and pressure (bar/force). Typically, pressure washers range between 1200 – 3000W, with the Karcher K4 rated at 1800 W and Bosch AdvancedAquatak measuring 2100 W.
For bar pressure, the Bosch 140 AdvancedAquatak is rated maximum 140 and the Karcher K4 140 has max 130, which is plenty for thorough cleaning.
- Does AdvancedAquatak BOSCH produce cordless pressure washers? – Yes – fontus 18v
- Does K4 KARCHER produce cordless pressure washers? – Yes – OC 3, 1.117-220.0, KHB 4-18, KHB 6
Water Flow Rate
Water flow rate of the BOSCH AdvancedAquatak and KARCHER K4 pressure washer is measured in litres per minute or hours, (l/min – l/h), and informs how much water the machine goes through. BOSCH AdvancedAquatak and KARCHER K4 have flow rates of 7.50 l/min and 7.00 l/min, making them powerful at washing and rinsing.
- AdvancedAquatak flow rate: 7.50 l/min
- K4 flow rate: 7.00 l/min
Hose Length
The high-pressure hose length of K4 and AdvancedAquatak electric pressure washers affects reach. The BOSCH AdvancedAquatak comes with a 8m hose, and the KARCHER K4 measures 8m. Both AdvancedAquatak 140 and K4 Power Control Flex pressure washer are compatible with hose extensions if required.
AdvancedAquatak 140 and K4 Power Control Flex Accessories
BOSCH AdvancedAquatak 140 and KARCHER K4 Power Control Flex pressure washers come with adjustable lance nozzles (varying spray patterns) and are compatible with Bosch and Karcher accessories, including surface cleaners for patios, decking, and driveways, extension wands, brushes, detergent dispensers, snow foam, etc.
- Bosch AdvancedAquatak Supplied accessories: Rotary Nozzle, High pressure foam nozzle, Fan jet nozzle, Integrated Storage, Metal High-pressure Gun, Filter
- Karcher K4 Supplied accessories: G 160 Q Power Control Gun, Dirt Blast Lance, Vario Power Lance
Brand | Model | Power (W) | Pressure (bar) | Hose (m) | Prices |
BOSCH | AdvancedAquatak | 2100 W | 140 | 8 | £328.00 |
KARCHER | K4 | 1800 W | 130 | 8 | £249.00 |
Where to buy the AdvancedAquatak? – Buy direct from BOSCH, or see best buy
Where to buy the K4? – Buy direct from KARCHER, or see best buy
Karcher K 5 Power Control Flex
Best pressure washer pick, beating all comparable BOSCH and KARCHER pressure washers on value and performance.
Offers Available
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