Yarbo Snow Blower on Hills: What Slope Can It Clear?

Last updated: October 2026

Yarbo rates the Snow Blower module for slopes up to 36%, which is 20 degrees. The Yarbo Core is rated for 70% (35°) when mowing, but the snow rating is the one that applies in winter. Measure the steepest part of your driveway before you buy. Snow tracks, studs and weighted plates add grip on ice.

Why are there two slope numbers for a Yarbo?

Because the job changes the physics. The Core's 70% (35°) rating is for a machine on grass with a mowing deck or a light blower module. In winter the same Core carries an 83 lb snow blower module out front and drives on snow and ice, which give far less grip than turf.

So Yarbo publishes a separate figure for the Snow Blower: 36% (20°). When you are deciding whether a Yarbo suits a sloped driveway, 20° is the number.

How steep is 20 degrees?

Steeper than most driveways. A 36% grade rises 36 feet for every 100 feet of horizontal distance. Many towns limit new driveways to well under that. If you can drive a normal car up yours in winter, there is a good chance it is under 20°. Do not guess, though. Measure.

How do you measure your driveway's slope?

You need the steepest section, not the average.

Phone method. Lay a straight board, 4 feet or longer, on the steepest part of the drive, pointing uphill. Put your phone on the board and open its level or measure app. Read the angle in degrees.

Board and level method. Hold one end of a 4 foot level on the ground uphill, raise the downhill end until the bubble centers, and measure the gap under the raised end. Divide the gap by the length of the level. A 12 inch gap under a 48 inch level is 25%.

Convert if needed. Percent grade is rise over run times 100. Degrees is the angle. They are different scales: 100% is 45°, not 90°.

Check a few spots. Driveways often have a short steep section at the street or by the garage. Our full guide is how to measure lawn slope, and the method is the same for pavement.

What if your driveway is close to the limit?

Treat a rating as a ceiling, not a target. Near 20°, conditions decide the result:

• Fresh snow on pavement: the best grip you will get.
• Packed snow: less grip.
• Ice under snow: the least.
• Wet, heavy snow: more load on the machine.

If your steepest section measures in the high teens, talk to us before ordering. We would rather tell you it is marginal than have you find out in January.

What traction parts does Yarbo make for winter?

• Snow Track. A heavy duty track for traction on snow and ice, with a wide design that spreads weight. Yarbo rates it down to -13°F. It is not compatible with the 2023 version of Yarbo.
• Anti-Slip Studs. 100 hardened steel studs for the rubber track. Per Yarbo they increase stability, maneuverability and climbing on icy terrain.
• Weighted Side Plates. A pair of plates at 9.4 lb each. Yarbo lists more traction on slopes and uneven terrain, and more stability in heavy work.

These parts improve grip. They do not raise the 36% rating. Our guide to Yarbo snow tracks, studs and weighted plates explains when each is worth fitting.

Do studs damage a driveway?

Steel studs grip by biting. On ice that is what you want. On bare sealed asphalt, decorative concrete or pavers, any studded track or tire can leave marks. If your surface is delicate, ask us before fitting studs and we will check Yarbo's guidance for your surface.

How should a sloped driveway be mapped?

Follow Yarbo's setup guidance first. In general:

1. Map on bare ground in fall, when you can see edges and drains.
2. Keep the dock on level ground, top or bottom, wherever power is.
3. Leave a margin at drop-offs, retaining walls and the street.
4. Plan the throw. On a slope, throw snow to the downhill side where you can, so meltwater does not run back across the drive and refreeze.

Does a robot have an advantage on a slope?

Yes, in one way: timing. Slopes become dangerous when snow is packed by tires and turns to ice. A robot that clears every few inches during the storm removes snow before it is driven on. Bare pavement is the best traction surface there is, for the robot and for your car.

A person on a steep icy driveway behind a heavy walk-behind blower is at real risk of a fall. Taking the person off the slope is a benefit even where the machine itself has to work in several passes.

What if your driveway is steeper than 20°?

Then a Yarbo Snow Blower is outside its rating there, and we will not tell you otherwise. Options:

• Split the job. Let the robot clear the flatter sections and walks, and handle the steep pitch another way.
• A remote control plow. The Mowrator S1 4WD with the Snow Plow Kit is steered by you. Mowrator rates the S1 4WD for 75% (37°) when mowing, but publishes no slope figure for plowing snow, so treat steep ice with caution. See the remote control snow plow.
• A service for the steep section only.

Does the Y40P climb better than the Y40 in snow?

Yarbo gives the same snow slope rating for both: 36% (20°). The Y40P Core uses gearbox-free hub motors and has a higher top speed, 1.2 m/s against 0.6 m/s, and clears up to 7,000 sq ft per charge against 6,000. Those are speed and coverage gains, not a higher slope limit. See Yarbo Y40 vs Y40P.

What else matters on a hill in winter?

• Cold. Yarbo rates operation from -13°F to 113°F.
• Depth. The intake is 12 inches. See how much snow a robot snow blower can handle.
• Surface. Paved, concrete and gravel are listed.
• Drainage. Clear snow away from drains so meltwater leaves the drive.

What is the bottom line?

Measure the steepest section. Under 20° with margin: a Yarbo Snow Blower is within its rating, and traction parts help on ice. Near 20°: ask us. Over 20°: use it on the flatter areas only.

Yarbo covers the Core and modules with a 2-year limited warranty and ships by free freight. See the Y40 Snow Blower and Y40P Snow Blower.

Still not sure which fits your property?

Tell us about your driveway grade, length and surface and a Yard Automation Pro will reply by email with a recommendation, or tell you honestly if none of our machines fits. Book a free consultation, or call +1 423-927-3776, 9am to 5pm EST. You can also try the Find Your Robot quiz and cost calculator.