BigBot Serviceability Score — every robot graded on ownership

How hard will it be to own?

Spec sheets tell you what a robot does on day one. Nobody tells you what year two looks like — when the battery fades, an actuator fails, or the manufacturer pivots. The Serviceability Score grades every machine we track on the five things that decide that, using only verified, sourced facts from our database.

Grade	Robot	Category	Score	Why
A	Husqvarna Automower 435 iQ AWD	Robot mowers	84/100	The only A on the lot — 4-year warranty and a nationwide dealer network contractually expected to sell AND service, with genuine-parts supply. This is what a real service ecosystem looks like.
B	Boston Dynamics Spot	Robot dogs	74/100	US-based manufacturer with direct support, an optional Spot CARE repair plan (10-business-day turnaround), and a mature public SDK. Held back by quote-only parts and consumables limited to 90-day coverage.
C	Pudu CC1	Commercial cleaning	63/100	Pudu's new Dallas US headquarters (April 2026) plus paid PUDU Care plans and a reseller adding a second year of coverage make this the best-supported Chinese commercial robot we track.
C	Knightscope K5	Security robots	61/100	All-inclusive MaaS: maintenance, updates, and hardware replacement are baked into the subscription, and everything is serviced in the USA. Scores C only because you can service nothing yourself — total dependence on the vendor.
C	Pudu BellaBot	Delivery & service	60/100	1-year reseller-backed warranty, nationwide RobotLAB service plus 24/7 support via ToDo Robotics, and Pudu's Dallas HQ behind it. Public repair documentation is thin.
C	Mammotion LUBA 3 AWD	Robot mowers	58/100	Standout 3-year warranty with free two-way shipping — but service is mail-in to the manufacturer, not local, and there's no dealer network or open platform.
C	Pudu KettyBot	Delivery & service	58/100	Same support ecosystem as BellaBot with slightly less parts visibility.
C	Deep Robotics Lite3	Robot dogs	56/100	Best public documentation of any quadruped (full service manual) and MIT/BSD-licensed SDKs — but the warranty on joints drops from 6 months to 3 if you unlock the advertised AI Motion Mode, and parts are inquiry-only.
C	ElliQ	Companion robots	56/100	Unlimited warranty for as long as you subscribe, with US-only phone support — the lease model makes serviceability the vendor's problem. Closed platform; when the subscription ends, so does everything.
C	SMP Robotics S5	Security robots	55/100	Rare bright spot: a contractual 5-year spare-parts supply guarantee. Sausalito HQ plus US RaaS partners, but bulk-only ordering and a closed platform.
C	Bear Robotics Servi Plus	Delivery & service	54/100	Bear (LG-owned) supports directly in the US with installation and on/off-site support; 12-month warranty-maintenance-support bundle through resellers. SDK status unpublished.
C	Unitree Go2	Robot dogs	53/100	The best-supported Unitree: 12-month warranty on Pro/X, RoboStore US phone support, open SDKs, and an iFixit teardown exists. Parts still mean a contact form.
C	Loona Petbot	Companion robots	51/100	1-year warranty, lifetime support pledge, published out-of-warranty repair pricing ($100-300), and open Blockly programming — honest support for a $500 device.
C	Unitree G1	Humanoids	51/100	8-month warranty on a $13,500+ machine, parts by contact form, and SDK access gated to EDU tiers that cost 3x more. Official disassembly manuals exist. US support = RoboStore, or Shenzhen-routed repair.
C	Booster Robotics T1	Humanoids	50/100	Genuinely open developer platform with a 1-year warranty, but US support runs through one reseller and manufacturer email.
C	Gausium Phantas	Commercial cleaning	50/100	1-year warranty excluding wear items, distributor-based 24/7 support, US developer cloud — but no US corporate office we could verify.
D	Unitree R1	Humanoids	48/100	The $4,900 entry humanoid comes with a 6-12 month warranty, ~1-hour battery, contact-form parts, and SDK locked behind EDU pricing. Budget for the ownership experience, not just the sticker.
D	1X NEO	Humanoids	41/100	The 3-year Early Access warranty is the longest humanoid coverage anywhere — but it's a preorder from a young company with no parts channel, no repair docs, and no track record. Grade will move as deliveries land.
D	Unitree H2	Humanoids	41/100	No published manufacturer warranty term for the base model, US reseller stock sold out at our check, parts by contact form. A $30k machine on hope.
D	Keenon BUTLERBOT W3	Delivery & service	36/100	Same story as the T10: real US presence, zero published warranty terms.
D	Keenon DINERBOT T10	Delivery & service	36/100	Keenon has run a US subsidiary since 2022, but publishes no warranty terms for the T10 at all — make coverage a written line item in any quote.
NG	Tesla Optimus	Humanoids	—/100	Not graded: not purchasable. No warranty, support, or parts information exists because no one outside Tesla owns one.
NG	Xiaomi CyberDog 2	Robot dogs	—/100	Not graded: no official US channel. Gray-market imports carry no US warranty and Chinese-only voice features.

Grade

Robot

Methodology

How hard will this machine be to own? Scored 0-100 from verified, sourced facts only — the same database as our spec plates. Five weighted components; grades: A 80+, B 65-79, C 50-64, D 35-49, F under 35. NG = not graded (not purchasable through a US channel).

warranty (20 pts) — Length and clarity of factory coverage, including traps (e.g. coverage that shrinks if you use advertised features).
network (25 pts) — US service presence: manufacturer support operations, authorized dealers/resellers that service, phone-reachable humans.
parts (25 pts) — Parts access: published parts channel and pricing vs. contact-form-only vs. nothing. Includes guaranteed parts-supply commitments.
docs (15 pts) — Public repair documentation: service manuals, disassembly guides, error-code references.
openness (15 pts) — SDK/API access and right to tinker without voiding everything.

Every input comes from the same sourced database as our spec plates — manufacturer pages, official manuals, and authorized US resellers, each with a URL and a verification date. When facts change (a warranty lengthens, a parts store opens), the score changes and the update is dated. Disagree with a grade? Tell us what we missed — corrections are public.