How long is a robot lawn mower warranty?

It varies more than most buyers expect. Husqvarna leads the category with a 4-year warranty on its current US/Canada Automower iQ Series, which Husqvarna itself markets as "Best-in-Class," plus a separate 3-year battery warranty. Segway Navimow and Mammotion Luba both carry a 3-year standard warranty. Worx Landroid, Ecovacs Goat, and Gardena Sileno all default to 2 years — though Worx stretches to 3 years if you register within 30 days, and Gardena stretches to 3 years with registration within 3 months.

Does a robot mower warranty cover the battery?

It depends heavily on brand. Husqvarna's current iQ Series is the standout — it backs the battery with its own separate 3-year warranty, not just a wear-item exclusion. Worx, by contrast, explicitly caps battery coverage at just 1 year regardless of registration, and Ecovacs matches that 1-year battery term against its 2-year mower warranty. Gardena's registration-based extension excludes wear parts and the battery entirely. Since batteries typically last 2–4 years before runtime drops, battery coverage length is worth checking as closely as the headline mower-warranty number.

Which robot lawn mower brand has the best warranty?

Husqvarna, by a clear margin, on its current US/Canada Automower iQ Series (410 iQ, 420 iQ, 440 iQ, 435 iQ AWD): a 4-year unit warranty plus a separate 3-year battery warranty, longer on both counts than every other major brand. Segway Navimow and Mammotion Luba are next at 3 years standard, each with a paid extension option (Mammotion's runs roughly $99+/year) for coverage past year three.

Do I have to register my robot mower to get the full warranty?

With Worx and Gardena, yes — registration within a set window (30 days for Worx, 3 months for Gardena) is what unlocks the extra year, from 2 to 3. Husqvarna's 4-year iQ Series warranty, Segway's 3-year term, Mammotion's 3-year term, and Ecovacs's 2-year term don't require registration to activate, though registering still speeds up any future claim by having proof of purchase on file.

Does using a robot mower commercially void the warranty?

Yes, on consumer models across the industry. A residential warranty covers mowing your own lawn, not running the same unit for a lawn-care business or an HOA contract — brands that sell into commercial grounds-keeping, like Husqvarna's separate CEORA line, price and warranty those units on different terms entirely. Check the fine print before buying a consumer robot mower for paid mowing work.

What voids a robot lawn mower warranty besides commercial use?

The recurring exclusions across brands are: damage from improper storage (a battery left outside through a freeze), normal wear parts (blades, wheels, charging contacts), unauthorized repairs or modifications, and water damage beyond the mower's rated ingress protection. Following the brand's winterizing and cleaning routine is the cheapest way to avoid accidentally forfeiting coverage you already paid for.

Robot Lawn Mower Warranty Guide 2026: Which Brands Cover You Longest

Quick Answer: Warranty length varies more across robot mower brands than most shoppers expect — from 2 years up to 4. Husqvarna leads the category on its current US/Canada Automower iQ Series with a 4-year unit warranty (marketed by Husqvarna itself as “Best-in-Class”) plus a separate 3-year battery warranty — the longest coverage on both counts of any major brand. Segway Navimow and Mammotion Luba follow at 3 years standard. Worx Landroid, Ecovacs Goat, and Gardena Sileno default to 2 years, though Worx and Gardena both extend to 3 years with timely registration. The catch even on the longer terms: Worx caps battery coverage at just 1 year regardless of registration, and Ecovacs matches that 1-year battery term.

On a $600–$4,000 purchase, warranty length is a real spec, not fine print — it’s the difference between a free repair and an out-of-pocket one if the navigation electronics, motor, or charging dock fails in year two or three. Here’s how the major brands actually compare, and where every one of them draws the line.

Robot lawn mower warranty comparison, by brand

Brand	Standard warranty	Extended option	Battery coverage	Source
Husqvarna Automower (iQ Series)	4 years	Not needed — longest standard term	Separate 3-year battery warranty	Husqvarna US product pages ("Best-in-Class 4-Year Warranty")
Segway Navimow	3 years	+1 year, paid	Shorter, wear-item exclusion	Segway Navimow US limited warranty policy
Mammotion Luba	3 years	+1 year, ~$99+/yr	Shorter, wear-item exclusion	Mammotion US product/care pages
Worx Landroid	2 years (3 if registered in 30 days)	Registration-based only	1 year, regardless of registration	Worx product-warranty terms
Gardena Sileno	2 years (3 if registered in 3 months)	Registration-based only	Wear parts/battery excluded from extension	Gardena warranty terms
Ecovacs Goat	2 years	Not standard in US	1 year	Ecovacs US limited warranty

Why a robot mower’s warranty term matters more than a push mower’s

A $250 push mower failing out of warranty is an annoyance. A $2,000+ robot mower failing out of warranty is a real repair bill, because the parts that actually break — RTK/GPS modules, drive motors, the charging dock’s electronics — aren’t the kind of thing a homeowner replaces with a wrench and a trip to the hardware store. That’s why Husqvarna’s 4-year iQ Series term stands out: it’s two extra full mowing seasons of free-repair coverage over the 2-year norm, on the most expensive parts of the machine. For the full price breakdown by tier, see our robot lawn mower cost guide.

The battery is where warranties diverge the most

Every brand above sells a mower rated to run 2–4 years on its original battery before runtime noticeably drops, per our robot lawn mower maintenance research. Battery coverage is where the brands split hardest:

Husqvarna backs the iQ Series battery with its own separate 3-year warranty — matching its already-longest mower coverage, and the strongest battery term in the category.
Worx states plainly that the battery is “guaranteed for one year only, regardless of online registration” — even on a mower otherwise covered for 3 years.
Ecovacs covers the battery for 1 year against the mower’s 2-year term.
Gardena’s registration-based extension explicitly excludes “wear parts and battery” from the extra year.

Outside of Husqvarna’s iQ Series, budget for a battery replacement (typically $80–$200, per our cost breakdown) sometime in years 2–4 regardless of what the box says about the mower itself — on most brands, the warranty protects the motor and electronics far longer than it protects the part most likely to actually need replacing first.

Husqvarna Automower iQ Series — the warranty leader

Husqvarna Automower iQ Series (410 / 420 / 440 iQ)

4-year unit warranty + 3-year battery warranty · EPOS wire-free · from ~$2,999.99

4 years of standard coverage on the mower — a full 2 years longer than the 2-year norm from Worx, Ecovacs, and Gardena.
Separate 3-year battery warranty, well ahead of Worx and Ecovacs's 1-year battery cap.
No registration deadline to hit — the 4-year term applies from purchase in the US and Canada.

Check price on Amazon →

If a warranty claim ever means waiting on a replacement part, at least the everyday parts — blades, filters, a spare charging cable — don’t have to wait: try Amazon Prime free for 30 days and get two-day shipping on the small stuff instead of a week.

Segway Navimow and Mammotion Luba both trail Husqvarna’s iQ Series by a year on the standard term, but neither requires the higher iQ-Series price to get there — both start at a lower price point with 3 years standard and a paid extension available. See our full best Husqvarna Automower roundup, or compare the wire-free brands head-to-head in our Mammotion vs Husqvarna guide if brand warranty and dealer support matter as much to you as price.

Robot mower warranties, by the numbers

4 years — Husqvarna’s Automower iQ Series warranty, marketed by Husqvarna as “Best-in-Class” for the US/Canada market, a full 2 years past the 2-year term Worx, Ecovacs, and Gardena default to.
3 years — Husqvarna’s separate battery warranty on the same iQ Series lineup, versus just 1 year of battery coverage from Worx and Ecovacs regardless of the mower’s own warranty length.
30 days — Worx’s registration window to unlock the jump from 2 to 3 years on the mower itself, versus 3 months for Gardena’s equivalent 2-to-3-year extension.

The bottom line

For the longest free-repair window on both the mower and the battery, Husqvarna’s Automower iQ Series is the clear leader at 4 years plus a separate 3-year battery warranty — no registration required. Segway Navimow and Mammotion Luba are the next-best at 3 years standard, each at a lower entry price than Husqvarna’s iQ lineup. If you’re buying Worx, Ecovacs, or Gardena instead, the 2-year base term is the industry norm, and with Worx or Gardena, registering within the deadline is a five-minute task worth doing before you forget — though none of those three match Husqvarna’s battery coverage even after registering. Not sure warranty length should even move the needle on your purchase? Our are robot lawn mowers worth it breakdown weighs total cost against a gas mower or lawn service, and our best robot lawn mower rankings factor in brand reliability alongside the warranty terms above.