Best Diesel Generators In April 2025

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Reading in bed is a common habit of many. Do you also enjoy it? Today let us present to you the Top 10 Best Diesel Generators.

To help you in your search, we have completed this list of the Best Diesel Generators.

Top Rated Best Diesel Generators Of 2025

Rank	Product Name	Score
1	Westinghouse WGen9500 Heavy Duty Portable Generator - 9500 Rated Watts & 12500 Peak Buy Now	9.7 Buy Now
2	DuroStar DS4000S 4000 Watt Portable Recoil Start Gas Fuel Generator Buy Now	9.5 Buy Now
3	WEN 56200i 2000-Watt Gas Powered Portable Inverter Generator, CARB Compliant Buy Now	9.1 Buy Now
4	Champion 46596 3500-Watt RV Ready Portable Generator (EPA) Buy Now	8.8 Buy Now
5	DuroMax XP4850EH 4850 watt Dual Fuel Hybrid generator with Electric Start Buy Now	8.6 Buy Now
6	Champion 3800-Watt Dual Fuel RV Ready Portable Generator with Electric Start Buy Now	8.3 Buy Now
7	WEN 4750-Watt 120V/240V Dual Fuel Portable Generator with Wheel Kit and Electric Start Buy Now	8.1 Buy Now
8	WEN GN400i RV-Ready 4000-Watt Open Frame Inverter Generator, CARB Compliant Buy Now	7.8 Buy Now
9	Briggs & Stratton P2200 Power Smart Series Inverter Generator with Quiet Power Technology Buy Now	7.5 Buy Now
10	Rainier R2200i Super Quiet Portable Power Station Outdoor Inverter Generator - 1800 Running Buy Now	7.2 Buy Now

1. Westinghouse WGen9500 Heavy Duty Portable Generator - 9500 Rated Watts & 12500 Peak

• Features two gfci 120v 520r standard household receptacle, one transfer switch ready 120v l14-30r, one rv ready 120/240v 1450r, and two 5v usb ports, all outlets have rubber covers for added safety
• Powered by a heavy duty 457cc westinghouse 4-stroke ohv engine featuring a long-lasting cast iron sleeve with automatic low oil shutdown and digital hour meter
• Plug-and-play: comes with a remote start key fob, 12v battery charger, oil, an oil funnel, a tool kit, and a users manual to get you started right out of the box (minimal assembly required)
• 9500 running watts and 12500 peak watts, remote start with included key fob, electric and recoil start, up to 12 hours of run time on a 6.6 gallon fuel tank with fuel gauge
• Epa and carb compliant, backed by 3-year limited service, labor, and parts coverage with nationwide customer service and support network at 1-855-944-3571 or email ,protected

2. DuroStar DS4000S 4000 Watt Portable Recoil Start Gas Fuel Generator

• What's in the box: durostar ds4000s generator, oil funnel, sparkplug wrench, tool set and owner's manual
• Powering everyone anywhere: like all durostar generators, the ds4000s is epa and carb approved for use in all 50 states
• Plenty of power: with 4,000 peak watts and 3,300 running watts, this unit is a workhorse that provides plenty of power to handle multiple jobs from powering high voltage appliances to heavy duty power tools
• Powerful durostar engine: the ds4000s is powered by a durostar 7 hp 208cc ohv engine with automatic low oil shutoff, fuel capacity: 3.96 gallons, noise level: 69db
• Power panel: includes a selection of outlets for maximum compatibility in your applications including: 2 120v household outlets and 1 120v 30a twist lock outlet, also includes a voltmeter for measuring voltage output

3. WEN 56200i 2000-Watt Gas Powered Portable Inverter Generator, CARB Compliant

• Noise level: 53 db operation
• Produces clean power to safely operate and prevent damage to sensitive electronics such as phones, tablets, televisions and computers
• Great for campgrounds, construction sites, tailgates and power outages
• Dimensions: 18" x 11" x 18" | weight: 50 lbs
• Includes two three-prong 120v receptacles, one 12v dc receptacle and one 5v usb port
• Epa iii and carb compliant 79.7 cc 4-stroke ohv engine produces 2000 surge watts and 1600 rated watts

4. Champion 46596 3500-Watt RV Ready Portable Generator (EPA)

• Outlets a 120v 30a locking outlet, a 120v 30a rv outlet and a 120v 20a household outlet, engine speed: 3600
• Designed for safety includes a low-oil shut-off sensor and has a 0.6-quart oil capacity (recommended 10w-30)
• Champion support includes 3-year limited warranty with free lifetime technical support from dedicated experts
• Reliable and powerful at 4000 starting watts and 3500 running watts, enjoy up to 12 hours of run time on a full tank of gasoline with a noise level of 68 dba from 23 feet
• Volt guard prevents overloads and keeps your valuable equipment safe from voltage spikes, plus a voltmeter allows you to monitor power output at a glance

5. DuroMax XP4850EH 4850 watt Dual Fuel Hybrid generator with Electric Start

• The ability to run on propane or gasoline allows the freedom and flexibility of fuel choice
• Specifications: noise level 69 db. fuel tank capacity (gasoline) 3.96 gallons. suggested tank size (propane) 20 gallons
• Your purchase includes one duromax xp4850eh 4850 watt dual fuel hybrid generator with electric start, one oil funnel, one spark plug wrench, tools set, wheels and handle kit, dc charging cables and owners manual
• Portable generator dimensions: 24 l x 17" w x 17" h. product weight: 127 lbs
• With 4,850 starting watts and 3,850 running watts, this unit can handle heavy loads from lights and a refrigerator to a home air conditioner and high amperage power tools. operate at both 120 v and 240 v simultaneously, or at 120 only with full power

6. Champion 3800-Watt Dual Fuel RV Ready Portable Generator with Electric Start

• Champion support: includes 3-year limited warranty with free lifetime technical support from dedicated experts
• Intelligauge: keep track of voltage, hertz and run-time hours to easily monitor power output and track maintenance intervals
• Dimensions: 26.3" l x 24.8" w x 22.9" h | weight: 119 lbs
• Dual fuel: operate your 3800-watt portable generator right out of the box on either gasoline or propane, plus the unit holds 0.6-quarts of oil (included) and has a low oil shut-off sensor
• Electric start: power up the 224cc champion engine with the handy toggle switch, battery included
• Noise level: 68 dba from 23 feet

7. WEN 4750-Watt 120V/240V Dual Fuel Portable Generator with Wheel Kit and Electric Start

• Switch between gasoline (4750 surge watts, 3800 running watt) and propane (4350 surge, 3500 running) with the simple turn of the selection dial
• Includes two 120v gfci outlets (5-20r), a 120v/240v nema 30a twist lock (l14-30r), a 12v dc cigarette-lighter-style plug, a bottle of oil, a wheel and handle kit, a 47-inch lpg connection hose, and a 2-year
• 4-gallon tank provides up to 11 hours of half load run time
• Electric start powers the 224cc 4-stroke ohv engine with the turn of a key
• Voltage easily goes from 120v to 240v, perfect for transfer switches and emergency backup

8. WEN GN400i RV-Ready 4000-Watt Open Frame Inverter Generator, CARB Compliant

• Parallel-ready panel allows you to connect any two wen inverter generators for increased wattage output
• 212cc 4-stroke carb-compliant ohv engine produces 4000 surge watts and 3500 rated watts
• Lightweight body weighs 30% less than a standard 4000-watt generator
• Generate clean power to safely operate sensitive electronics such as phones, tablets, televisions and computers
• Includes two 120v nema 5-20r receptacles, two 5v usb ports, one 120v rv-ready tt-30r receptacle, and a two-year warranty

9. Briggs & Stratton P2200 Power Smart Series Inverter Generator with Quiet Power Technology

• Quiet and fuel efficient 111 cc ohv engine produces 2,200 starting watts and 1700 running watts
• 1 gallon fuel tank for upto 8 hours of continuous operation at 25 percent load, usb port allows charging of portable electronics in order to stay connected
• 1-gallon fuel tank for up to 6.5 hours of continuous operation at 25% load
• Usb port allows charging of portable electronics in order to stay connected. muffler : super lo-tone. start type: recoil
• Quiet and fuel efficient 111 cc ohv engine produces 2,200 starting watts and 1700 running watts
• At 59 decibels operating volume, its quieter than a normal conversation (sound levels may vary based on proximity and location, measured at load at 7 meters from control panel side)

10. Rainier R2200i Super Quiet Portable Power Station Outdoor Inverter Generator - 1800 Running

• Rainier 79cc ohv 4 stroke engine with easy access recoil start, features eco (economy) mode for conserving energy and maximum fuel efficiency
• Equipped with built-in handle at a lightweight 44 lbs., ultra compact and portable to make transporting your new generator effortless wherever you go
• Epa and carb compliant, versatile choice for home use or recreation use such as power outages, camping, outdoor activities, emergency backup power. rv air conditioner (11,000 btu)
• 1800 rated watts and 2200 peak watts, gasoline powered, up to 13 hours of run time, gasoline powered, 1.3 gallon fuel tank
• Control panel includes low oil alarm, overload alarm, and output indicator, two 5-20r 120v 20 amp household outlets, one 12v 15 amp dc outlet, one neutral floating grounding port, stop and reset buttons
• Super quiet operation, enjoy a hushed hum of as low as 52 dba while providing a stable power source for all your sensitive electronics such as smartphones, tablets, televisions, and computers (noise rating obtained at a distance of 7 meters in a controlled environment)