Stihl Ms 171 vs 170: Which Chainsaw Wins?

Versus
By Maya Collins April 23, 2026
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Choosing the right chainsaw can make all the difference for your yard work, whether you’re a homeowner tackling occasional tasks or a professional needing a reliable tool. Stihl is a name synonymous with power and durability, and two popular models often come up in conversation: the Stihl MS 171 and the Stihl MS 170.

Both are excellent entry-level chainsaws, known for their ease of use and performance. However, subtle differences can impact your decision. Are you looking for a slight edge in power, improved features, or simply the most cost-effective option?

This comparison dives deep into the Stihl MS 171 vs 170, breaking down their specifications, performance, and ideal use cases. We’ll help you understand which of these Stihl workhorses is the better fit for your needs.

Specs at a Glance

Featurestihl ms 171170
Engine Displacement31.8 cc30.1 cc
Power Output1.4 kW1.3 kW
Weight (Powerhead only)4.3 kg4.2 kg
Bar Length (Recommended)14-16 inches14-16 inches
Fuel Tank Volume0.37 L0.37 L
Oil Tank Volume0.15 L0.15 L
Chain Pitch3/8″ P3/8″ P
Chain Gauge0.050″0.050″
Anti-Vibration SystemYesYes
Carburetor AdjustmentsTool-lessTool-less
Easy2StartNoNo
Intelligent Engine ManagementYesNo

Feature-by-Feature Breakdown

Engine Power & Performance

  • Stihl Ms 171: Features a 30.1 cc engine with 1.4 kW (1.9 hp) of power. This provides a noticeable boost in cutting performance compared to the 170, making it better suited for slightly tougher jobs and longer periods of use. It offers a smoother power delivery.
  • 170: Equipped with a 29.8 cc engine delivering 1.3 kW (1.7 hp). While still capable for general yard work and smaller tasks, it may feel less powerful when tackling thicker branches or prolonged cutting. It’s a reliable workhorse for basic needs.
  • Winner: stihl ms 171

Weight & Handling

  • Stihl Ms 171: Weighs 4.3 kg (9.5 lbs) without bar and chain. Its slightly increased power is balanced by a minimal weight increase, maintaining excellent maneuverability and reducing user fatigue during extended operation.
  • 170: Weighs 4.2 kg (9.3 lbs) without bar and chain. This makes it one of the lightest professional-grade chainsaws available, offering exceptional agility and ease of handling, particularly for beginners or for use in tight spaces.
  • Winner: 170

Anti-Vibration System

  • Stihl Ms 171: Incorporates an advanced STIHL anti-vibration system designed to significantly reduce vibration levels transmitted to the operator. This leads to more comfortable operation and less physical strain over time.
  • 170: Features a standard STIHL anti-vibration system. While effective, it’s not as sophisticated as the system on the MS 171, meaning users may experience slightly more vibration, especially during prolonged use.
  • Winner: stihl ms 171

Fuel Efficiency & Emissions

  • Stihl Ms 171: Benefits from STIHL’s 2-MIX engine technology, offering up to 20% lower fuel consumption and 50% fewer exhaust emissions compared to conventional two-stroke engines without 2-MIX. This makes it more economical and environmentally friendly.
  • 170: Utilizes a conventional two-stroke engine. It is fuel-efficient for its class but does not offer the advanced emission reductions or the same level of fuel savings as the 2-MIX technology found in the MS 171.
  • Winner: stihl ms 171

Chain Tensioning

  • Stihl Ms 171: Features a tool-less chain tensioner (side-mounted). This allows for quick and easy adjustments to chain tension without needing to remove the chain cover, significantly speeding up maintenance.
  • 170: Requires a standard tool-based chain tensioning system, typically adjusted from the side. While functional, it necessitates carrying and using a specific tool for chain adjustments, which can be less convenient in the field.
  • Winner: stihl ms 171

Carburetor & Starting Ease

  • Stihl Ms 171: Equipped with a carburetor with adjustable high-speed and low-speed settings and often features an Easy2Start system (depending on regional configurations), making it easier to start and adjust for optimal performance.
  • 170: Features a fixed-setting carburetor and a standard pull-start mechanism. It’s designed for reliability but may require a bit more effort to start and fine-tune compared to the MS 171, especially in varying conditions.
  • Winner: stihl ms 171

Bar and Chain Options

  • Stihl Ms 171: Typically comes with or is compatible with 14-inch or 16-inch guide bars. This versatility allows users to choose a bar length suited to the specific cutting tasks they intend to perform.
  • 170: Commonly supplied with a 14-inch guide bar. It is also compatible with other bar lengths within its power class, but the 14-inch is the standard for its optimal balance of cutting speed and maneuverability.
  • Winner: stihl ms 171

Overall Value & Target User

  • Stihl Ms 171: Positioned as a step up from the basic model, offering enhanced performance, comfort, and efficiency for homeowners and semi-professional users who tackle more frequent or slightly demanding tasks. The added features justify its slightly higher price point.
  • 170: Remains an excellent entry-level option for homeowners and occasional users due to its simplicity, low cost, and reliable performance for light-duty tasks. It’s the go-to for budget-conscious buyers needing a dependable basic chainsaw.
  • Winner: stihl ms 171

Winner by Category

CategoryWinner
Powerstihl ms 171
Weight170
Ease of Use (Starting/Tuning)stihl ms 171
Value for Money170
DurabilityTie
Overall Performancestihl ms 171

What They Have in Common

  • Engine Type: Both chainsaws feature reliable 2-stroke STIHL engines designed for efficient operation and durability.
  • Bar and Chain Compatibility: They share the same recommended bar lengths and chain specifications, offering flexibility in choosing cutting attachments.
  • Fuel and Oil Capacity: The fuel and oil tanks on both models have identical volumes, providing consistent operating times between refills.
  • Anti-Vibration System: Both the MS 171 and MS 170 are equipped with an anti-vibration system to reduce operator fatigue during prolonged use.
  • Tool-Less Cap System: Refueling is made convenient with tool-less caps for both the fuel and chain oil tanks on each saw.
  • Chain Brake: Safety is a priority with both models featuring a inertia-activated chain brake for immediate stopping power.

Stihl Ms 171 Vs 170 Buying Guide

Price and Value

The Stihl MS 170 is generally the more budget-friendly option between the two. Its lower price point makes it an attractive choice for homeowners and occasional users who need a reliable saw for light-duty tasks without a significant investment. The MS 171, while slightly more expensive, offers enhanced features that can justify the additional cost for those who anticipate more demanding use or desire a bit more performance.

When considering value, it’s important to weigh the initial cost against the expected lifespan and performance. The MS 170 provides excellent value for its simplicity and effectiveness in basic cutting. The MS 171’s improved features may offer better long-term value for users who require a bit more power and versatility for their landscaping needs. (See Also: Demeyere 5 Plus Vs Atlantis )

Power and Performance

The Stihl MS 171 boasts a slightly larger engine displacement and higher power output compared to the MS 170. This translates to a noticeable difference in cutting speed and efficiency, particularly when tackling thicker branches or denser wood. While the MS 170 is perfectly capable for most homeowner tasks, the MS 171 offers a more robust performance that can make demanding jobs feel less strenuous.

For users who frequently cut firewood, clear storm-damaged trees, or work with hardwood, the extra power of the MS 171 will be a significant advantage. The MS 170 is best suited for lighter tasks like trimming small trees, pruning bushes, and occasional small-scale projects where maximum power isn’t the primary concern.

Features and Technology

The Stihl MS 171 comes equipped with several enhancements over the MS 170, including an improved air filtration system for better engine longevity and a potentially more comfortable anti-vibration system. These features contribute to a more user-friendly experience and can reduce fatigue during extended use. While the MS 170 is a straightforward, no-frills saw, the MS 171 offers a slightly more refined operational experience.

The MS 171 may also feature a slightly different carburetor setup or other minor technological upgrades that contribute to its overall performance. For those who value a smoother operation and potentially longer engine life due to better filtration, the MS 171 presents a compelling case. The MS 170 remains a solid choice for its simplicity and reliability. (See Also: Nikon 50 1 8 Vs 1 4 )

Intended Use and User Type

The Stihl MS 170 is ideally suited for the average homeowner who needs a reliable and easy-to-use chainsaw for occasional tasks around the yard. This includes light pruning, cutting small trees, and clearing brush. Its lightweight design and straightforward operation make it accessible for users with limited chainsaw experience.

The Stihl MS 171, while still a great choice for homeowners, leans towards those who might engage in slightly more demanding work. This could include homeowners with larger properties, those who process their own firewood, or individuals who require a bit more power and endurance from their saw. It bridges the gap between a basic homeowner saw and more professional-grade equipment.

Who Should Buy What?

Buy stihl ms 171 If…

  • You need slightly more power for occasional tougher jobs.
  • You appreciate the convenience of intelligent engine management for easier starting and optimal performance.
  • You are looking for a saw with a slightly larger displacement for a bit more cutting capacity.

Buy 170 If…

  • You are on a tighter budget and need a reliable entry-level chainsaw.
  • Your cutting tasks are primarily light-duty, such as trimming branches or small firewood.
  • You prioritize simplicity and don’t require advanced features like intelligent engine management.

Frequently Asked Questions

Stihl Ms 171 Vs 170 Frequently Asked Questions

What is the main difference in power between the MS 171 and MS 170?

The Stihl MS 171 generally offers a slightly higher engine displacement and power output than the MS 170. This means the MS 171 can cut through wood a bit faster and handle denser materials with greater ease. While the MS 170 is adequate for most light homeowner tasks, the MS 171 provides a noticeable boost in performance for more demanding jobs.

Is the MS 171 significantly more expensive than the MS 170?

Yes, the MS 171 typically carries a higher price tag than the MS 170. The increased cost is due to its enhanced features, such as a more powerful engine and potentially improved air filtration and vibration dampening systems. The MS 170 remains the more budget-friendly option, making it a popular choice for those with tighter budgets. (See Also: Samsung Pro Vs Evo 850 )

Which saw is better for beginners?

Both chainsaws are designed with ease of use in mind, making them suitable for beginners. However, the MS 170’s simpler design and lower power output might make it slightly less intimidating for absolute novices. The MS 171 is also very beginner-friendly, and its slightly more advanced features might be appreciated as a user gains more experience.

Does the MS 171 offer better durability or longevity?

While both Stihl chainsaws are known for their durability, the MS 171’s potentially improved air filtration system can contribute to better engine longevity by keeping contaminants out more effectively. The overall build quality of both is excellent, but the MS 171’s enhancements may offer a slight edge in long-term operational health.

When should I choose the MS 171 over the MS 170?

You should consider the MS 171 if you frequently tackle tougher cutting jobs, need a bit more power for efficiency, or value enhanced features like improved air filtration and vibration dampening. If your needs are strictly for light, occasional yard work and budget is a primary concern, the MS 170 is an excellent and more economical choice.

Final Verdict

The Stihl MS 171 represents a modest but meaningful upgrade over the already capable MS 170. With its enhanced power, improved cutting performance, and additional features like superior air filtration, the MS 171 offers a more robust and refined user experience. While the MS 170 remains an outstanding value for basic homeowner tasks, the MS 171 is the better choice for those who anticipate more demanding use or simply want a bit more capability from their lightweight chainsaw.

Winner: Stihl MS 171