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Gas-Powered (49 State) Portable Generator w/COsense 8125 Starting / 6500 Running Watt Gasoline Single fuel Portable Generator

Ratings & Reviews for Generac Gas-Powered (49 State) Portable Generator w/COsense 8125 Starting / 6500 Running Watt Gasoline Single fuel Portable Generator

4.3
1350
Review
 4.3 out of 5
1350 Reviews


85% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The generator is described as powerful, reliable, and able to power a variety of household appliances during outages. Many users praise its easy starting and ability to run for extended periods on a full tank. However, some experienced issues with the GFCI breaker, CO2 sensor, and insufficient power output. A few also found the generator to be too loud and had difficulties with assembly. Overall, the generator appears to be a capable and generally positive performer, but customers should carefully consider their power needs and be prepared to troubleshoot any potential issues.

Customer review summary generated by AI, including incentivized reviews.
1350 Customer Reviews

Great Generator

Would Recommend

Follow directions and it was easy to set up and works perfect.

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Did not work out of the box & cannot return!

Would Not Recommend

After 3 calls with the Generac service hotline to get this thing to work, and after running around trying to find & replace a new sparkplug (from their direction) we are now in the process of getting this 200lb machine into an authorized service center to diagnose why this brand new machine out of the box will not start. I have never been more disappointed with a product in my life. I feel so foolish for spending so much money on this thing. We are still weeks away from getting a working gene...

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Response from Generac

We’re sorry for the frustration and inconvenience you’ve experienced, especially after multiple support calls and troubleshooting steps. This isn’t t...

GeneracFebruary 2, 2026

Generac

Don't use a Lowes credit card. APR is 31.99%

Would Not Recommend

Generator will not start. I purchased it because my Father-In-Law is living with us and uses Oxygen and the large winter storm was heading our way. Luckly our power didn't go out. Beyond that, I received my Lowes credit card (applied at purchase). Very surprised with the 31.99% APR, shame on Lowes! That's disgusting. I immediately paid the entire balance. 31.99%!!!! Not in my lifetime.

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Response from Generac

We’re sorry to hear the generator wouldn’t start, especially with a winter storm approaching. Please contact our support team so we can help troubles...

GeneracFebruary 2, 2026

Generac

Leaks gas

Would Not Recommend

Got it home and it leaked gas!!! Awful

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Response from Generac

We’re sorry you’re dealing with this. If you’re seeing fuel leakage, please don’t operate the generator.

Please contact our support team s...

GeneracFebruary 2, 2026

Generac

Fuel leaking from filter

Would Not Recommend

Unfortunately, we purchased this on January 28 due to our generator dying during the severe weather. Upon opening the box and assembling this unit, everything seemed to be going just fine. After putting in gasoline and following all manual, instructions opened up the gas line to find out gas spilling out of the filter immediately called Lowe’s and was told to bring it back, however, due to having gasoline the person on the phone said they would not take it back. Immediately called Generac and wa...

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Response from Generac

We’re sorry for what you experienced, especially while dealing with severe weather and a loss of power. A fuel leak and difficulty reaching support i...

GeneracJanuary 30, 2026

Generac

Back up security

Would Recommend

Like the electric start and the various socket types which allows you to run different devices. Also like the handle it makes it easy to maneuver. The small print instructions made it a bit difficult to read and were incomplete...you need to read the placard on the generator for start instructions.

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Response from Generac

Thanks for the feedback. We’re glad you’re enjoying the electric start, outlet options, and the handle for easier maneuvering.

We’re sorry...

GeneracFebruary 2, 2026

Generac

Same Gas leaking issue

Would Not Recommend

I bought this last night, put it together this morning, added the oil, fueled it up, started per the instruction ran great, went to plug in my extension cord and noticed it was pouring gas everywhere. I turned it off drained the carb took it apart and everything looked fine. Reassembled it and it is running fine. After 8hrs it is leaking oil from somewhere on top of the block under the fuel tank. Kind of in the middle of a week of no power in an ice storm, I guess I’ll try and fix it tomorrow m...

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Response from Generac

Thank you for sharing what happened. We are sorry you experienced this issue, especially in the middle of an ice storm.

For safety, please...

GeneracJanuary 30, 2026

Generac

Good Generator

Would Recommend

Easy to assemble. Electric Start works great.

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Denied Return Despite Kentucky State of Emergency

Would Not Recommend

I purchased an unopened generator on 01/23 and attempted to return it. The store manager refused the refund, stating that more than 48 hours had passed. However, on that same date, the state of Kentucky was under an declared State of Emergency due to a winter storm, making travel unsafe and strongly discouraged. As soon as conditions improved, I returned to the store and left the item there. Was I expected to put my life at risk to return the item within 48 hours despite an official state emerge...

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Response from Generac

We are sorry to hear about this experience, especially given the state of emergency and unsafe travel conditions. Each retailer sets and manages its ...

GeneracJanuary 30, 2026

Generac

Do not over fill.

Would Recommend

We like the product.

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Great Buy

Would Recommend

Great Generator Easy assembly started right up

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Great Generator

Would Recommend

I feel safe when we have bad weather. The ice and snow take out the electricity so I just start the generator and I have power and coffee. You can not get any better than that. I wish my dad had one in 1957 we did with out electricity for two weeks.

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Great Deal - Runs Strong on Propane or Gas

Would Recommend

For the wattage and price, this is a nice deal!! Great quality, easy to assemble. Comes with a free cable and propane hose. Only issue, the instructions for propane starting is not straight forward... The book says one thing, the Quick Start sticker on the generator says another. If you're using propane to start, full choke 100% (to the left) for 2 slow pulls or one 4 sec electric start. Then reduce choke down to 25% and pull hard or electric start, and when it catches, choke off and she goes!! ...

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