Top-Rated Diesel Generators Compared (September 2026)

Last Update: 14. September 2026
1
Best Choice
Editor’s Choice
A+ Excellent
Hyundai

  • Compact yet powerful: With a long run standby generator from Hyundai offers either switchable 230v single phase or 400v 3-phase voltages. This generator is ideal for workshops, garages and home use.
  • Quiet Generator: Housed in silenced casing, an extremely quiet machine and will keep disturbance to a minimum for you, your family or your employees when powering your building. With a sound rating of 70dB @ 7 metres.
  • Fuel Type & Run Time: The large 25L fuel tank increases running time to a maximum of 30 hours, powered by a 4-stroke, air-cooled 456cc single cylinder Hyundai diesel engine, the DHY8000SELR-T has a maximum output of 5.8kW / 7.25kVA.
  • Economical to Run: Using roughly 1L of diesel every hour. Since the generator can run on red diesel, which is significantly cheaper than the white diesel you put into your car, running costs can be kept to a minimum.
  • An ATS (Automatic Transfer Switch) sold separately: Can be connected to an ATS system for maximum convenience. When the ATS module - detects a loss of power from the mains supply it starts your generator up automatically and switches the supply from mains to generator
Colour Brand Weight
White and Black HYUNDAI -
£1,52199
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2
Best Overall Value
Best Value
A Very Good
maXpeedingrods
TODAY 11% OFF!
£549.99 (11% DISCOUNT!)

  • 【Multifunction Power Supplier】 Quiet and fuel efficient 4 stroke 145cc petrol generator produces 3300W max watts and 3000W running watts. It is easily able to run the lighting system, RV or a small family home. And run a huge range of high-power appliances such as an air conditioner with 6000 BTU cooling capacity, refrigerators, kettles, and even more appliances at the same time.
  • 【Low noise】When the generator is in ECO mode at 25% load and is 7m away from the generator, the noise level is 58 decibels. which is almost the quietest generator of this rated power. At this noise level, there is little disturbance for users and people nearby. Please note that ambient noise may affect the overall value of the noise of the machine.
  • 【Extra Long Runtime】Runs 8.3 hours at 25% load (750w load) 、4.5 hours at 50% load (1500w load). In ECO mode, the runtime can be extended up to 10-12 hours. Guaranteed power supply overnight.
  • 【Provide Clean Power】This inverter technology provides more steady power, produces clean power to safely operate and prevent damage to sensitive electronics such as phones, tablets, televisions and computers.
  • [Brand Warranty] Maxpeedingrods warrants all the inverter generators against defects in workmanship under normal use for a period of 2 years from the date of retail purchase by the original end-user purchaser ("Warranty Period"), and free lifetime technical support and customer service.
Colour Brand Weight
Orange,black maXpeedingrods 21 kg
£48999
RRP: £549.99 -11%
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3
A Very Good
maXpeedingrods

  • 【Multifunction Power Supplier】4-stroke petrol generator produces 3500W max watts and 3200W running watts. It is easily able to keep the lighting system or a small family house, power air conditioners and many other small appliances such as refrigerators,coffee machine at the same time.
  • 【Provide Clean Power】This inverter technology provides more steady power, produces clean power to safely operate and prevent damage to sensitive electronics such as phones, tablets, televisions and computers.
  • 【Multi-Function Display】Easy to monitor voltage and frequency power; display remaining fuel, which is suitable for timely fuel change; display cumulative runtime, which is suitable for later generator maintenance; display unique runtime, perfect timer function.
  • 【Lightweight and Powerful Motor】Only 26 kg, small and compact, easy to carry, 223 cc OHV motor with two 230 V ports and a 12 V DC connector, provides plenty of power for multiple tasks.
  • 【Brand Warranty】 Maxpeedingrods warrants all the inverter generators against defects in workmanship under normal use for a period of 2 years from the date of retail purchase by the original end-user purchaser ("Warranty Period"), and free lifetime technical support and customer service.
Colour Brand Weight
Orange/Black maXpeedingrods 26 kg
£21599
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4
B+ Very Good
Excel Power Generators

  • POWERFUL STANDBY PERFORMANCE: The Excel Power XLD9500Q diesel generator delivers 6500W starting power and 6000W running output for reliable residential and commercial applications. Perfect for home backup, workshops, lighting systems, appliances and outdoor equipment during power outages.
  • ELECTRIC START CONVENIENCE: Designed as an advanced electric start generator, this model features simple key ignition for quick operation without manual pulling. Ideal for home backup, catering vans, construction areas and working environments requiring dependable standby power.
  • AVR STABLE POWER OUTPUT: Equipped with an AVR alternator for controlled voltage stability, this unit safely powers appliances, lighting systems and power tools. Excellent for home generators for power outages, providing dependable energy support during blackouts, storms and standby applications.
  • LONG RUNTIME & LOW EMISSIONS: Powered by a robust 498cc direct injection diesel engine with a 26L fuel tank, this generator delivers extended runtime and efficient fuel consumption. Stage V low-emission certified design ensures reliable operation with reduced environmental impact plus a 1-year warranty.
  • DURABLE STANDBY POWER DESIGN: Built with a heavy-duty compact canopy, durable wheels and integrated handles, this unit offers easy placement and storage. Suitable for home backup, workshops, garages and commercial standby power applications.
Colour Brand Weight
Red Excel Power Generators 175 kg
£1,19999
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5
B+ Very Good
Hyundai

  • Reliable Hyundai Power: powered by our Hyundai D400E 10hp single cylinder engine. Producing a max output of 5.2kW / 6.5kVA*. The generator has 1 x 115V 16amp, 1x 115V 32amp and 1 x 230V 32amp sockets. You can easily switch between 110V / 230V using the switch on the control panel.
  • Ease Of Use: Features electric start and a convenient digital control panel which displays the frequency, voltage and total run time. Keeping on top of the required services is easy when monitoring the hours on the pane
  • Silenced Operation: Part of the Hyundai silent range so is a quiet generator and comes with a sound attenuated canopy to reduce overall noise levels making it suitable for domestic or low noise areas.
  • Engine Protection: The built-in low oil alarm and automatic shutdown keep the generator safe during operation and ensure the engine is protected at all times.
  • Long Run Time: The large 13-litre fuel tank can provide up to 16 hours of run time @ 50% load. The DHY6000SE can run on standard white or red diesel.
Colour Brand Weight
White and Black HYUNDAI 152 kg
£1,25000
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6
B Good
Hyundai

  • Extended Runtime 7.5L Fuel Tank – Large-capacity tank delivers up to 14 hours at 10% load and 5.8 hours at 50% load, reducing refuelling stops during weekend-long off-grid use.
  • 3.3kW Peak / 3.0kW Continuous Output – Reliable mid-range inverter power ideal for caravans, motorhomes and leisure setups running fridges, lighting and small appliances together.
  • Pure Sine Wave Safe Power – Clean, inverter-regulated 230V output protects laptops, phones, TVs and other sensitive electronics.
  • 208cc Euro V 4-Stroke Engine – Robust air-cooled petrol engine provides strong power reserve for sustained performance while running on standard unleaded fuel.
  • Quiet Inverter Technology with ECO Mode – Runs at 72 dBA @ 7m at 50% load; ECO mode lowers engine speed under lighter loads to reduce noise and improve fuel efficiency.
Colour Brand Weight
- HYUNDAI 26 kg
£29999
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7
B Good
maXpeedingrods

  • 【Multifunction Power Supplier】 4 stroke 345cc inverter generator produces 5500W max watts and 5000W running watts. It is easily able to run a huge range of high-power appliances such as 2000W pressure washer, 3000W power tools, an air conditioner with 6000 BTU cooling capacity, refrigerators, kettles, and even more appliances. Or as backup for power outages.
  • 【Easy Start】There are 3 ways of easy start: Remote Start, Electric Start and Recoil Start. Quick start technology that ensures the machine is ready to work within seconds, you can start your different experience in a snap.
  • 【Extra Long Runtime】13.5L Large fuel tank capacity, runs 9 hours at 50% load (2500w load). In ECO mode, the runtime can be extended up to 13 hours.
  • 【Provide Clean Power】This inverter technology provides more steady power, produces clean power to safely operate and prevent damage to sensitive electronics such as phones, tablets, televisions and computers.
  • [Brand Warranty] Maxpeedingrods warrants all the inverter generators against defects in workmanship under normal use for a period of 2 years from the date of retail purchase by the original end-user purchaser ("Warranty Period"), and free lifetime technical support and customer service.
Colour Brand Weight
- maXpeedingrods -
£72999
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8
B Good
JCB

  • Powerful 7.9kW petrol generator: Delivers up to 7.9kW / 9.8kVA maximum output and 7.5kW / 9.4kVA continuous power, ideal for construction sites, workshops, farms, garages and demanding trade applications.
  • 457cc 15HP JCB engine: Heavy-duty single-cylinder petrol engine delivers dependable power for running site tools, lighting, workshop equipment and other demanding electrical equipment.
  • 115V & 230V power outputs: Equipped with 1 x 230V / 32A socket and 2 x 115V / 16A sockets, allowing you to power a wide range of trade tools, site equipment and machinery from one generator.
  • Electric & recoil start: Convenient electric starting makes the generator quick and easy to operate, with recoil start as a dependable backup and a large 25L fuel tank for extended use.
  • Heavy-duty site generator with wheel kit: Strong 32mm open frame helps protect the generator in demanding working environments, while the included wheel kit makes the 99kg unit easier to move around sites and workshops.
  • Built-in protection & 3 year warranty: Overload protection and low-oil shutdown help protect the generator and engine during operation, backed by JCB's 3-year warranty for added peace of mind.
Colour Brand Weight
Yellow JCB 94 kg
£84999
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9
C Good
Monster Shop

  • Enclosed by a soundproof canopy, you can be sure this powerful diesel generator will keep noise to a minimum, so it doesn’t disturb you, your neighbours, or employees when in operation.
  • With a built-in ATS, this is a generator you can rely on to supply you with back up power almost at an instant to keep your home or business running smoothly. An optional electric start system allows you to effortlessly turn on the generator manually should you wish to.
  • A fully fuelled 20L tank will provide you with consistent power for up to 16 ½ hours making the generator extremely economical.
  • Power multiple devices at once with this high-performance single-phase generator and it’s incredible 6kVA maximum output.
  • Fitted with 4 heavy duty 4” wheels and a sturdy handle, this compact machine is extremely easy to transport allowing you to manoeuvre it as required whether on a permanent site or on the move.
Colour Brand Weight
Orange T-Mech -
£1,24999
Amazon
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10
C Good
Excel Power Generators

  • POWERFUL SINGLE & THREE PHASE OUTPUT: The Excel Power XLD9500QT diesel generator delivers 6500W starting power and 6000W running output with both 230V single phase and 400V three phase supply. Ideal for residential backup, workshops, commercial sites, lighting systems, outdoor equipment and demanding power tool applications.
  • ELECTRIC START & EASY OPERATION: Built as a reliable electric start generator, this model features simple key ignition for fast startup in all weather conditions. The onboard digital display allows convenient monitoring of voltage, frequency and runtime, helping improve maintenance awareness and long-term performance reliability.
  • AVR STABLE POWER TECHNOLOGY: Equipped with an AVR alternator, this generator provides controlled voltage stability for improved safety and cleaner electricity output. Perfect for powering appliances, laptops, televisions and sensitive equipment, making it excellent for home generators for power outages and standby applications.
  • DURABLE BACKUP POWER DESIGN: Designed for dependable standby power and durability, this generator includes a robust metal casing, compact structure and practical transportability. Suitable for homes, workshops, construction environments, mobile catering vans, garages and commercial workplaces.
  • EFFICIENT PERFORMANCE & EXTENDED RUNTIME: Powered by an efficient 498cc direct injection diesel engine with a large 26L fuel tank, this generator offers dependable extended runtime and fuel economy. Operating at only 75–80 dBA at 7 meters, it is an ideal generator for home backup and commercial standby solution.
Colour Brand Weight
Red Excel Power Generators 175 kg
£1,33999
Amazon
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More information and FAQs about the featured Diesel Generators in this comparison:


Technical Details
Colour White and Black
Brand HYUNDAI
Weight -
Advantages
  • Reliable
  • Versatile
  • Efficient
  • Durable
FAQs about Hyundai 7.5kVA / 5.8kW Diesel Generator, 230V & 400V Max Power, Electric Start, Long Runtime, White, Portable Backup Power Generator
What is the power output of the Hyundai DHY8000SELR-T generator?
The Hyundai DHY8000SELR-T generator has a power output of 5.8kW.
Can the Hyundai DHY8000SELR-T generator be used for both single-phase and three-phase power?
Yes, the Hyundai DHY8000SELR-T generator can be used for both single-phase and three-phase power.
Is the Hyundai DHY8000SELR-T generator silenced?
Yes, the Hyundai DHY8000SELR-T generator is silenced to reduce noise during operation.
What is the fuel type for the Hyundai DHY8000SELR-T generator?
The Hyundai DHY8000SELR-T generator runs on diesel fuel.
What is the running time of the Hyundai DHY8000SELR-T generator?
The Hyundai DHY8000SELR-T generator has a long run time, allowing for extended use without refueling.
Technical Details
Colour Orange,black
Brand maXpeedingrods
Weight 21 kg
Advantages
  • Portable
  • Silent
  • Pure Sine Wave
  • Suitable for camping
  • Ideal for RV travel
FAQs about maXpeedingrods 3300W Portable Inverter Generator Petrol Pure Sine Wave Silent Generator with 230V outlets, 12V / 8.3A DC receptacle, USB outlets for Camping, RV Travel, Home, or Jobsites
What is the wattage of the maXpeedingrods portable inverter generator?
The maXpeedingrods portable inverter generator has a wattage of 3300W.
Is the maXpeedingrods generator petrol-powered?
Yes, the maXpeedingrods generator is petrol-powered.
Does the generator produce pure sine wave power?
Yes, the maXpeedingrods generator produces pure sine wave power.
Can I use the generator for camping or RV travel?
Yes, the maXpeedingrods generator is suitable for camping and RV travel.
Is the generator silent during operation?
Yes, the maXpeedingrods generator is designed to be silent during operation.
Technical Details
Colour Orange/Black
Brand maXpeedingrods
Weight 26 kg
Advantages
  • Portable
  • Inverter
  • Pure Sine Wave
  • Versatile
FAQs about maXpeedingrods 3500W Petrol Inverter Generator Portable 4-Stroke 223cc
What is the maximum power output of the maXpeedingrods generator?
The maximum power output of the maXpeedingrods generator is 3500W, making it suitable for various applications such as camping, RV travel, home backup, or jobsites.
What type of generator is the maXpeedingrods portable inverter generator?
The maXpeedingrods generator is a 4-stroke pure sine wave petrol generator, which ensures stable and clean power output for sensitive electronic devices.
Is the maXpeedingrods generator suitable for camping?
Yes, the maXpeedingrods generator is suitable for camping as it provides portable power for various camping appliances and devices.
Does the maXpeedingrods generator have a compact design?
Yes, the maXpeedingrods generator features a portable and compact design that allows for easy transportation and storage during camping trips or other outdoor activities.
Can the maXpeedingrods generator be used for home backup?
Yes, the maXpeedingrods generator can be used for home backup to provide power during emergencies or power outages.
Technical Details
Colour Red
Brand Excel Power Generators
Weight 175 kg
Advantages
  • Reliable
  • Powerful
  • Convenient
  • Easy to start
  • 1 year warranty
FAQs about Excel Power Portable 6.5KW Diesel Generator - 26L Tank Quiet Backup Power Generator - AVR Equipped Electric Start Generator for Home Backup, & Residential Use
What is the power output of the Excel Power 6.5KW Standby Back up Electric Start Diesel Generator?
The Excel Power 6.5KW Standby Back up Electric Start Diesel Generator has a power output of 6.5KW.
Does the generator come with a warranty?
Yes, the Excel Power 6.5KW Standby Back up Electric Start Diesel Generator comes with a 1-year warranty.
Is the Excel Power 6.5KW Standby Back up Electric Start Diesel Generator suitable for residential use?
Yes, the Excel Power 6.5KW Standby Back up Electric Start Diesel Generator is suitable for residential use.
Does the generator have an outdoor power tool feature?
Yes, the Excel Power 6.5KW Standby Back up Electric Start Diesel Generator is an outdoor power tool.
Technical Details
Colour White and Black
Brand HYUNDAI
Weight 152 kg
Advantages
  • Silenced
  • Diesel
  • Low fuel consumption
  • Reliable power source
FAQs about Hyundai Silenced Standby Diesel Generator 5.2kW/ 6.5kVA, Electric Start & Single Phase Low noise sound attenuated canopy with large 13L fuel tank
How much power does the Hyundai DHY6000SE 5.2 kW Silenced Diesel Generator provide?
The Hyundai DHY6000SE generator provides a power output of 5.2 kW.
Is the Hyundai DHY6000SE generator silenced?
Yes, the Hyundai DHY6000SE generator is a silenced diesel generator to reduce noise levels during operation.
What fuel does the Hyundai DHY6000SE generator use?
The Hyundai DHY6000SE generator runs on diesel fuel.
Does the Hyundai DHY6000SE generator have an electric start?
Yes, the Hyundai DHY6000SE generator features an electric start for easy operation.
What is the warranty period for the Hyundai DHY6000SE generator?
The Hyundai DHY6000SE generator comes with a standard warranty period of 1 year.
Technical Details
Colour Red
Brand Excel Power Generators
Weight 175 kg
Advantages
  • Electric start
  • 6.5KW power
  • Single/Three Phase
  • Diesel generator
FAQs about Excel Power Electric Start 6.5KW Diesel Generator - Backup Power Generator with 230V / 400V Single & Three Phase Power
What is the power output of the Excel Power Electric Start 6.5KW Single/Three Phase Diesel Generator?
The power output of the generator is 6.5KW, which can be used for both single-phase and three-phase applications.
Is the Excel Power Electric Start 6.5KW Single/Three Phase Diesel Generator suitable for outdoor use?
Yes, this generator is designed for outdoor use and can withstand various weather conditions.
How long is the warranty period for the Excel Power Electric Start 6.5KW Single/Three Phase Diesel Generator?
The generator is covered by a 1-year warranty, providing peace of mind for the customers.
Does the Excel Power Electric Start 6.5KW Single/Three Phase Diesel Generator have an electric start feature?
Yes, this generator has an electric start feature, making it easy and convenient to start the engine.
Is the Excel Power Electric Start 6.5KW Single/Three Phase Diesel Generator suitable for both single-phase and three-phase applications?
Yes, this generator is capable of powering both single-phase and three-phase electrical loads.

General information you should know about Diesel Generators:


Diesel generators are an essential asset for a wide range of industries and applications. They are known for their reliable power supply and robust performance, making them a popular choice for both commercial and residential use. In this text, we will discuss the key features and advantages of diesel generators, as well as highlight the importance of conducting a product comparison before making a purchase decision.

Diesel generators are renowned for their durability and longevity. They are designed to withstand heavy usage and adverse weather conditions, making them highly reliable sources of power. With their heavy-duty engines and sturdy construction, diesel generators can provide uninterrupted power supply for extended periods. This makes them particularly suitable for critical applications such as hospitals, data centers, and construction sites, where power outages can have severe consequences.

One of the major advantages of diesel generators is their fuel efficiency. Unlike gasoline generators, diesel generators consume less fuel for the same amount of power output. This not only reduces operating costs but also ensures a longer runtime without the need for frequent refueling. Additionally, diesel fuel is generally more widely available than gasoline, making diesel generators a convenient choice for remote locations or areas with limited access to fuel stations.

Noise reduction is another significant aspect of diesel generators. Compared to their gas-powered counterparts, diesel generators are generally quieter during operation. This is due to their lower RPM and advanced noise reduction technologies. The reduced noise levels make diesel generators suitable for various applications, including residential use, as they cause less disturbance to nearby residents or workers.

To derive maximum benefit from a diesel generator, it is crucial to conduct a thorough product comparison. By comparing different models and brands, customers can identify the best generator to suit their power requirements and budget. Factors to consider during the comparison process include power output, fuel efficiency, noise levels, maintenance requirements, and additional features such as automatic start/stop functionality or remote monitoring capabilities.

In conclusion, diesel generators offer a reliable and efficient source of power for numerous applications. With their durability, fuel efficiency, and noise reduction capabilities, diesel generators are an attractive choice for those seeking a dependable power supply. However, it is essential to conduct a product comparison to ensure the generator meets specific requirements. By making an informed decision based on the individual needs and considering various factors, customers can invest in a diesel generator that delivers optimal performance and longevity. Don't miss out on the advantages of diesel generators - start comparing products today and find the perfect generator for your needs.