Today's Best Deals
Best Karcher K4 of 2026
We compared 306 karcher k4 listings on Amazon UK and ranked the 10 best deals available right now, with prices starting from £13.40. Rankings reflect real customer ratings and current prices.
Kärcher K 4 Power Control Flex Pressure Washer, max. 130 bar,Flow Rate:420 l/h,Area Coverage: 30 m²/h,Water Filter,Weight: 11.5 kg, High-Pressure Hose,Dirt Blaster,Spray Lance,Standard,Yellow/Black...
- High-Performance 130-Bar Pressure: Kärcher K 4 Power Control Flex delivers superior cleaning power with 420 l/h flow rate for large area coverage of 30 m²/h.
- Complete Accessory Package: Includes high-pressure hose, Dirt Blaster nozzle, spray lance, and integrated water filter for thorough cleaning.
- Flexible and Portable: At just 11.5 kg with Power Control technology, adjust pressure to suit each surface for optimal, damage-free cleaning.
Amazon
Kärcher high-pressure washer K 4 Power Control Flex eco!Booster Black Edition, pressure: max. 130 bar, flow rate: 420 l/h, area: 30 m²/h, Power Control gun, flexible high-pressure hose, dirt blaster
- - Made in Europe - Patented Nozzle Technology (Dirt Blaster) - 50% higher cleaning performance* (eco!Booster)
Amazon
Kärcher K 4 Classic High-Pressure Washer, max. 130 bar
- High-Performance Cleaning: Delivers powerful cleaning with max 130 bar pressure and 420 l/h flow rate, ideal for patios, driveways, cars, and garden furniture.
- Complete Accessory Kit: Includes high-pressure hose, trigger gun, Dirt Blaster nozzle, and spray lance for versatile cleaning applications around the home.
Kärcher K 4 Classic Home High-Pressure Washer, max. 130 bar
- - Patented Nozzle Technology (Dirt Blaster) - Save up to 50% cleaning time using the patio cleaner
- Everything You Need For Outdoor Cleaning - An accessory kit including a T 5 Patio Cleaner and Stone & Façade 3-in-1 detergent helps you clean large outdoor areas quickly and easily.
- Easily Switch Between Surfaces - A Vario lance and Dirt blaster lance allow you to select the right pressure for cleaning any surface.
Kärcher K 4 WCM Flex eco!Booster Car & Home High-Pressure Washer, Max. 130 bar
- Everything You Need To Clean Your Car: An accessory kit including Wash Brush, Foam Jet and Natural Car Shampoo helps you clean any vehicle with ease.
- Everything You Need For Outdoor Cleaning: An accessory kit including a T 5 Patio Cleaner and Stone & façade detergent helps you clean large outdoor areas quickly and easily.
- Save Water, Energy and Time: Gain 50% increased cleaning performance* thanks to the efficient yet powerful Eco!booster lance, perfect for use on sensitive surfaces such as wooden decks or cars. *Compared with the Kärcher standard flat jet
Kärcher K 4 WCM Flex eco!Booster Home High-Pressure Washer, max. 130 bar
- Everything You Need For Outdoor Cleaning: An accessory kit including a T 5 Patio Cleaner and Stone & façade detergent helps you clean large outdoor areas quickly and easily.
- Save Water, Energy and Time: Gain 50% increased cleaning performance* thanks to the efficient yet powerful Eco!booster lance, perfect for use on sensitive surfaces such as wooden decks or cars. *Compared with the Kärcher standard flat jet
- Built To Last: You'll get years of use thanks to the state-of-the-art water cooled motor and 5 year guarantee, built for top performance and durability.
Kärcher K 4 Comfort Premium High Pressure Washer, 130 bar
- Ultimate Versatility at Your Fingertips The innovative 4-in-1 Multi Jet eliminates the hassle of swapping lances. Simply twist the nozzle to instantly select the perfect spray for the job.
- Kärcher Always On Hand To help you get the job done our specifically designed app is full of useful hints and tips. From setting up the machine to step by step application tips.
- Everything In One Place Keep everything you need close to hand with on-board storage for the lances, cable and hose.
Amazon
Kärcher K 4 WCM Flex eco!Booster High-Pressure Washer, max. 130 bar
- Save Water, Energy and Time: Gain 50% increased cleaning performance* thanks to the efficient yet powerful Eco!booster lance, perfect for use on sensitive surfaces such as wooden decks or cars. *Compared with the Kärcher standard flat jet
- Built To Last: You'll get years of use thanks to the state-of-the-art water cooled motor and 5 year guarantee, built for top performance and durability.
- Everything In One Place: Keep everything you need close to hand with on-board storage for the lances, cable and hose.
We scan the most relevant karcher k4 listings on Amazon UK, covering major brands and models, and shortlist the strongest offers available right now.
Rankings for today's best karcher k4 reflect real Amazon customer star ratings and review counts, together with current prices, so the list shows what's actually available.
What we concluded:
Our overall winner is Kärcher K 4 Power Control Flex Pressure Washer, max. 130 bar,Flow Rate:420 l/h,Area Coverage: 30 m²/h,Water Filter,Weight: 11.5 kg, High-Pressure Hose,Dirt Blaster,Spray Lance,Standard,Yellow/Black.... It stands out for the right balance of quality, performance, and value.
What sets it apart:
- High-Performance 130-Bar Pressure: Kärcher K 4 Power Control Flex delivers superior cleaning power with 420 l/h flow rate for large area coverage of 30 m²/h.
- Complete Accessory Package: Includes high-pressure hose, Dirt Blaster nozzle, spray lance, and integrated water filter for thorough cleaning.
- Flexible and Portable: At just 11.5 kg with Power Control technology, adjust pressure to suit each surface for optimal, damage-free cleaning.
The best value for most shoppers is Karcher K4 | K5 Full Control Pressure Washer Set Back Foot 4.100-775.0, the lowest-priced pick in our top 10 at £13.40.
The strongest deal right now is Kärcher K 4 Classic High-Pressure Washer, max. 130 bar. It offers premium features at a competitive price point.
How to Choose the Best Karcher K4
Select eco!Booster for sensitive surfaces
Models like the Kärcher K 4 WCM Flex eco!Booster and K 4 Power Control Flex eco!Booster Black Edition feature an Eco!booster lance that delivers 50 percent increased cleaning performance compared to standard Kärcher flat jets. This design protects delicate areas like wooden decking or vehicle paintwork while saving water and energy. If you only clean hard stone paving, a base unit like the Kärcher K 4 Classic provides 130 bar pressure without the extra eco!Booster nozzle.
Match accessory kits to patio cleaning needs
Home bundles such as the Kärcher K 4 Classic Home and K 4 WCM Flex eco!Booster Home include the T 5 Patio Cleaner attachment and Stone & Façade detergent to cover large outdoor areas efficiently. Standard setups like the Kärcher K 4 Power Control Flex come only with the trigger gun, spray lance, and dirt blaster. Choosing a non-Home variant saves storage space if you do not require a dedicated surface cleaner.
Decide if you need higher bar pressure and flow rate
All K4 options cap at 130 bar pressure, a 420 l/h flow rate, and an area coverage of 30 m²/h. Stepping up to K5 models like the Kärcher K 5 Classic or K 5 Power Control Flex increases output to 145 bar pressure, 500 l/h flow rate, and 40 m²/h area coverage. However, the K 5 Power Control Flex increases unit weight to 13 kg compared to 11.5 kg on the K 4 Power Control, whereas the compact K 5 Classic weighs just 5.6 kg.
Look for Power Control guidance and hose length
The Kärcher K 4 Power Control features a G 160 Q Power Control gun display that lets you check pressure levels set by twisting the lance, alongside app support for step-by-step cleaning tips. Hose lengths also vary across the range. The Kärcher K 5 Power Control Flex supplies a longer 10 m Flex hose, whereas the K 4 Power Control Flex provides an 8 m Flex hose.
Buying Guide & FAQ
What is the best karcher k4 deal right now?
Our current top-ranked deal is the Kärcher K 4 Power Control Flex Pressure Washer, max. 130 bar,Flow Rate:420 l/h,Area Coverage: 30 m²/h,Water Filter,Weight: 11.5 kg, High-Pressure Hose,Dirt Blaster,Spray Lance,Standard,Yellow/Black... at £185.00.
What is the price range for karcher k4?
Across our top 10 picks, prices currently range from £13.40 to £309.99 on Amazon UK.
What pressure output does a Kärcher K4 deliver?
Every Kärcher K4 pressure washer in this range provides a maximum pressure of 130 bar and a flow rate of 420 l/h. This provides an area coverage of 30 m²/h, suitable for cleaning small cars, bicycles, garden tools, and stone paving.
What is the difference between Kärcher K4 and K5 models?
Kärcher K4 units operate at 130 bar max pressure, 420 l/h flow rate, and 30 m²/h coverage. K5 options like the Kärcher K 5 Classic increase output to 145 bar pressure, 500 l/h flow rate, and 40 m²/h coverage. Machine weights also differ, ranging from 5.6 kg on the K 5 Classic up to 13 kg on the K 5 Power Control Flex.
What accessories come with Kärcher Home pressure washers?
Home editions such as the Kärcher K 4 Classic Home and K 4 WCM Flex eco!Booster Home include a dedicated T 5 Patio Cleaner attachment and Stone & Façade detergent. Standard models like the Kärcher K 4 Classic include the spray lance, high-pressure trigger gun, and dirt blaster nozzle without the surface cleaner.
What are the benefits of the Kärcher eco!Booster lance?
Available on models such as the Kärcher K 4 WCM Flex eco!Booster and K 4 Power Control Flex eco!Booster Black Edition, the Eco!booster lance yields 50 percent higher cleaning performance than a standard flat jet. It cleans quickly while remaining gentle on wooden decks and car bodies.
How does the pressure display work on the Kärcher K 4 Power Control?
The Kärcher K 4 Power Control allows you to adjust pressure levels by rotating the spray lance. You can verify the selected setting on the integrated G 160 Q Power Control gun display and connect to the Kärcher Home & Garden app for cleaning advice.
Which Kärcher pressure washer offers the longest hose reach?
The Kärcher K 5 Power Control Flex features a 10 m high-pressure Flex hose. By comparison, models such as the Kärcher K 4 Power Control Flex and Kärcher K 5 Classic Home come equipped with an 8 m high-pressure hose.