Stihl FS 91 R vs Ego ST 1623T String Trimmer Comparison

Are you looking for a reliable and powerful string trimmer? Look no further than the Stihl FS 91 R or EGO ST 1623T String Trimmers. Both string trimmers are designed to provide excellent cutting power in hard-to-reach places, so you can shape your yard with ease. Compare the two models to see which is best for you! . The Stihl FS 91 R vs Ego ST 1623T String Trimmer Comparison is given below-

Stihl FS 91 R vs Ego ST 1623T String Trimmer Comparison

Here we compare Stihl FS 91 R vs Ego ST 1623T String Trimmer based on the following Parameters.

1. Power and Engine

The Stihl FS 91R string trimmer and the Ego ST 1623T string trimmer both offer power-packed performance and great engine options. The Stihl uses a professional-grade two-stroke gasoline engine that delivers high torque, dense power, and long-lasting reliability.

It also has an air purge system that ensures proper fuel emulsion without pre-mixing and can be tuned for different grass types. On the other hand, the Ego ST 1623T string trimmer is powered by a 56V Lithium-ion battery that provides up to 45 minutes of runtime with no fade or lost power.

The variable speed control also provides more torque at lower speeds for heavier tasks, allowing it to cut through thicker areas with ease. Both of these options provide excellent trimming performance, but it really comes down to your individual needs on which one will best fit your situation.

2. Usability

Stihl FS 91 R String Trimmer is a powerful and durable grass trimmer that combines the convenience of cordless power with excellent performance. Its cutting span is 24 inches and equipped with an ergonomic loop handle to provide users with good balance and control.

It has a four-step lithium-ion battery that delivers a long-lasting charge for persistent use. With the Stihl Easy2Start system, starting this trimmer is almost effortless. Additionally, the Stihl QuickStop shield instantly stops the engine when the release of the trigger and blade clutch are activated.

The EGO ST 1623T String Trimmer, on the other hand, is powered by 56V Lithium-ion battery technology, delivering power on par with gas trimmers.

This string trimmer comes equipped with an advanced rechargeable 2.5 Ah battery for extended runtime performance—up to 1 hour run time per charge with no memory effects or decrease in capacity over time.

It has a 15 inch cutting swath and variable speed control between 2000RPMs to 5500 RPMs allowing users to adjust for power or runtime according to the job at hand. Lastly, its rubber overrun clutches provides improved durability and prevents abrupt stop when engaging Weed Eater Head against hard objects within your work area.

3. Features

The EGO ST 1623T String Trimmer is designed to provide users with superior cutting performance. It features a patented Rapid Reload head that allows for quick and easy loading of new line without the need to disassemble or rethread spools.

Additionally, its Powerload technology allows for continuous line feeding making it easier to complete jobs in an efficient fashion. It also comes equipped with an adjustable speed trigger, allowing users to adjust the strength of their cutting power depending on the job being performed.

The Stihl FS 91 R String Trimmer meanwhile is praised for its durability and versatility. It is crafted using lightweight materials that help bring down weight while increasing overall strength and stability.

The product has both bump head and auto feed capacity, allowing you to switch between rapid reloading and continuous line feeding as needed.

To further increase convenience, the trimmer also comes with an adjustable loop handle that can be tilted in different angles so you can enjoy comfortable operation no matter what position you’re trimming plants or grasses from.

4. Versatility

The Stihl FS 91 R String Trimmer and the Ego ST 1623T String Trimmer are two of the top rated string trimmers for homeowners. Both offer versatile features with different benefits to meet specific needs. The Stihl FS 91 R is a high-power gas-powered trimmer, featuring adjustable RPMs and an extra large cutting swath up to 20 inches.

This allows you to quickly cover areas quickly while also managing thicker vegetation. The Ego ST 1623T on the other hand offers more of a cordless convenience with a battery-powered motor that provides up to 50 minutes of run time per charge.

It also comes with 4 adjustable speed settings, making it suitable for various types of vegetation and debris control  ideal for quick maintenance jobs around garden walls or trees. In short, both models provide excellent versatility but depending on your needs, one option may be preferable over the other.

Stihl FS 91 R vs Ego ST 1623T String Trimmer Comparison Pros and Cons

The Pros and Cons are given below-

Pros of Stihl FS 91 R String Trimmer:

  • Offers excellent power and performance, with a 24.1 cc engine to handle difficult trimming jobs.
  •  Has the longest reach of all Stihl products, making it suitable for larger lawns and gardens.
  •  Well balanced for comfortable operation and maneuverability.
  • Easy start-up system ensures quick start up every time.

Cons of Stihl FS 91 R String Trimmer:

  • Expensive compared to competing products in its class.
  •  Durability issues have been reported by some customers.

Pros of Ego ST 1623T String Trimmer:

  • Lightweight design makes it easy to maneuver around obstacles or tough terrain.
  • Steel reinforced drive shaft makes it durable and strong enough to tackle tough trimming jobs with ease.
  •  Variable speed trigger allows users to control the output from low speed to full power with ease.
  •  Comes equipped with a 56V lithium-ion battery that provides superior runtime over other motors on the market.

Cons of Ego ST 1623T String Trimmer:

  • Limited availability due to higher price point compared to other models on the market, which can make replacement parts difficult to find.
  • Can be harder to operate for beginners without prior experience using string trimmers due to its weight balance design and variable speed trigger setup

Stihl FS 91 R vs Ego ST 1623T String Trimmer Final Verdict- Which is better and why?

The Consumer report comparison of the Stihl FS 91 R String Trimmer vs. Ego ST 1623T String Trimmer both have pros and cons. The Stihl trimmer is a heavy-duty trimmer with high power, making it ideal for commercial use.

It is also more expensive but comes with an extended 3-year warranty. The Ego String Trimmer is lightweight and has long-lasting battery life but may not be suitable for larger lawn jobs.

After scrutinizing both models, the final verdict is that the Ego ST 1623T String Trimmer is better in this case due its longer life battery, lighter weight, and lower cost. This makes it better suited for smaller yards, weekend gardeners, or those who don’t need the extra oomph of a powerful motor and increased price tag of the Stihl trimmer.


Q1: What are the main differences between the Stihl FS 91 R string trimmer and the Ego ST 1623T string trimmer?

A1: The biggest difference between these two string trimmers is the motor. The Stihl FS 91 R has a 2-stroke engine and the Ego ST 1623T has a 56-volt brushless electric motor.

Q2: What types of features do Stihl FS 91 R or Ego ST 1623T products have?

A2: The Stihl FS 91 R has an ergonomic bike handle, a 4-position cutting head, and good fuel efficiency. The Ego ST 1623T has a variable speed trigger for better power control, easy start technology, folding handles for storage, and an ergonomic design.

Q3: How long will each of Stihl FS 91 R or Ego ST 1623T products last?

A3: Both of these models are designed to be very durable and should last many years with proper care and maintenance. The Stihl FS 91 R has an expected life of up to 5 years or 3,000 hours while the Ego ST 1623T is guaranteed for 3 years or 300 charge cycles.

Q4: How much noise do Stihl FS 91 R or Ego ST 1623T products make?

A4: The Stihl FS 91 R puts out approximately 104 decibels when in use while the Ego ST 1623T produces only about 61 decibels when in use making it much quieter than its gas counterpart.

Q5: Are there any additional costs associated with using Stihl FS 91 R or Ego ST 1623T string trimmers?

A5 : For the Stihl FS 91R you will need to purchase gasoline while with the EGO ST1623T you may also need to buy extra batteries depending on how much you use it, as well as potentially needing extra charger if you plan do multiple simultaneous charges.


I hope you like reading on Stihl FS 91 R vs Ego ST 1623T String Trimmer Comparison.

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