RELEASED 2017REASSESSED 2026.08.08

Robomow

Robomow RC308 Pro X

Name: Robomow RC308 Pro X
Brand: Robomow

Perimeter wire does the heavy lifting here: once installed, the RC308 runs scheduled sessions and returns to dock without intervention. Random-path coverage is the trade-off; systematic parallel rows require stepping up to a GPS-based platform.

PriceNot listedNot tracked yet

Autonomy Ladder

Why Level II.

One five-rung scale, every category, from acting only on command to working unsupervised anywhere.

VGeneralized AutonomyAny task, any setting. No consumer robot has reached it.
IVEnvironmental AutonomyHandles new obstacles and re-plans in real time; rare in consumer products.
IIIConditional AutonomyFinishes whole jobs in familiar spaces; struggles at the edges.
To reach Level IIIMost sessions finish without intervention. Rescue is occasional, not routine.
IIAssisted AutonomyThis robot

Robomow RC308 Pro X runs preset routines on its own, and the owner is its recovery system.

Navigation and control
Perimeter wire boundary with random-path coverage; contact bump and lift/tilt sensors
Why this level
- The RC308 operates autonomously within its wire boundary, returns to dock when the battery depletes, and resumes scheduled sessions without human intervention during a mowing run.
- The perimeter wire is a human-installed environmental constraint.
- The mower cannot navigate, map, or adapt outside it, capping classification at Level II per the Robovations Ladder framework.
Autonomy dimension 48 / 100 · 1 source reviewed
IManual AutomationOne action on command; no independent operation.

How we assign a level →

Behind the classification

Sources we reviewed.

Pending1 source reviewed

Evidence is still being collected for this product.

Sources reviewed

Owner reports1 sourceOngoing

Owner feedback from retail listing reviews and lawn-care community forums covering installation and seasonal use

Review: Robomow RC304 Robot Lawnmower – Robot Reviewsrobotreviews.com

Specification sources1 sourceReviewed

Pages the published specifications were read from.

manua.lsmanua.ls

Also monitored, nothing listed yet

Manufacturer documentationOngoing

Product spec sheet, user manual, and app compatibility documentation from Robomow

Press & video reviewsOngoing

Consumer and trade press coverage of the RC series at launch and in seasonal roundups

Longitudinal signalPending

Multi-season ownership feedback covering wire-break incidents, blade replacement cadence, and app reliability

How we evaluate evidence →

Human Readiness

Ready Now.

One question: what does buying this robot today walk you into? The state is computed from the record, and recomputed daily.

Ready NowThis robot

Robomow RC308 Pro X is on sale, assessed, and nothing on its record argues for waiting.
How this was derived
- Purchasable, but through import channels rather than ordinary US retail.
- Shipping past the first-90-day ownership window with a published assessment, no documented issues on record, and no announced successor.
Notes on the record
- Robomow's current lineup lists only the RK and RKS series; the RC family isn't part of it anymore, and no US retailer carries this unit.
- It still ships new through UK dealers, so the gap is where a buyer can act rather than whether the machine performs.
On the record
- Shipping since January 2017 · 116 months on the market
- No successor announced
- 1 source reviewed
What would move it
A documented problem, an announced successor, or a withdrawn listing moves it out; the rating recomputes daily.
New to MarketOn sale under 90 days; the ownership record is still forming.
WaitA successor is announced and has not shipped; re-read the decision when it arrives.
Known IssuesDocumented problems stand on the record; read the case before buying.

How we assess readiness →

Robovations Score

How this number was reached

60of 100

CapableAt or above 26% of the 382 robots we scoreand 16% of the 88 scored robot lawn mowers

DeficientLimitedCapableStrongExemplary

Measured on 6 of the 9 inputs28% not counted

Our assessment did not establish an independent source for edge-case recovery, operating envelope, software stability on this machine, so those inputs are left out of the score rather than guessed at, and the rest re-weighted to fill the space. A gap in what we have been able to verify is not evidence against the robot. Where it reaches 30% of the rubric we publish no number at all.

What moved itpoints gained or lost against a typical robot

Carried by

Field failure rate88+2.9

Held back by

Support longevity25−3.8
Routine maintenance46−2.3
Coverage and navigation50−2.0

Capability40% of the score61What it does without you.

Task completion16% of the score68

Evidence

Once the wire is in, scheduled sessions run unattended across 800 square meters with dock return, and it mulches so nothing is emptied. The rain sensor pausing and docking is genuine self-service rather than an owner watching the forecast. What keeps a human in the loop is the coverage itself: owner reports document occasional missed strips near the boundary in a given session with full coverage only across multiple runs, and a wire break stops everything until it is traced and spliced.

Coverage and navigation10% of the score50

Evidence

The Garden Equipment Review brand write-up describes the pattern against the seller's own interest: "you can define it a go around the perimeter of the garden, which it does and then to go up and down. However, once it is gone around the perimeter of the garden it cuts randomly, but at the end of its cycle, all the lawn is perfectly cut." The boundary itself is a pegged perimeter wire and the same site's RC308 Pro X listing specifies three sub-zones and two separated zones, so the work area is fixed rather than learned. Complete but inefficient, which is class-normal for a wire-bounded mower.

Edge-case recoverynot countedno source verified50

Evidence

More capable at reporting than most wired machines here: the GSM module on Pro variants sends one-way stuck notifications and mowing history, so the owner learns the machine has stopped without walking the lawn, and the rain sensor is genuine self-recovery from a weather interruption. Against that, a wire break halts operation and requires manual diagnosis with a wire-break detector, which exists precisely because the mower cannot locate the break, and obstacle handling is contact bump only.

Operating envelopenot countedno source verified64

Evidence

Wire guidance makes canopy, shade and darkness irrelevant, which is real breadth satellite guidance lacks, and the rain sensor keeps it out of conditions rather than failing in them. The rating itself is modest and dated: roughly 30 to 35 percent gradient from 2017 documentation, an 800 square meter cap, dense internal obstacles requiring additional guide wires, light drizzle not always triggering the return, and indoor winter storage.

Dependability40% of the score64Whether it keeps doing it.

Field failure rate16% of the score88

Evidence

Nine years on the market with owner reporting spanning 2017 to 2024, a long field record, no recall and no systemic defect across the line. The recurring documented mode is wire breaks from aerators or root heave, which the record correctly calls the system's single point of maintenance risk: job-stopping until repaired, but owner-repairable with a splice and a detector, and a property of the installation rather than the machine. Held below the mature-record anchors because the linked owner evidence is a single forum thread about the RC304 rather than this model.

Software stabilitynot countedno source verified74

Evidence

Well below the ordinary-case anchor for a specific reason rather than an evidentiary one: the ordinary case assumes updates ship, and this is a 2017 machine from a series the manufacturer has removed from its lineup entirely, so it is not receiving them. The record carries no firmware source of any kind, no release history and no account of any update ever applied. Control is Bluetooth-at-the-mower with a GSM module for one-way alerts, so there is not much surface for software to change.

Support longevity10% of the score25

Evidence

A very weak support position, and the anchor applies directly: a discontinued line with no parts channel scores low however good the machine is. The record states the RC series no longer appears in Robomow's lineup, no Robomow store sells it, no current US retailer stocks it, the Lowe's listing is dead, and US units surface mainly on eBay sold for parts or repair. The blade disc is nominally available through an authorized retailer network for a line that network no longer carries.

Ownership burden20% of the score48What it asks of you.

Routine maintenance12% of the score46

Evidence

Six recurring items with two of them on the wire: weekly clearing of clippings and debris from the blade disc, undercarriage and sensor surfaces, monthly wire path inspection and dock contact pin corrosion checks, blade disc replacement every three to six months, seasonal indoor storage and spring dock cleaning, plus as-needed wire tracing and splicing and zone reprogramming after layout changes. Slightly lighter than the wired Husqvarnas here because the wire inspection is monthly rather than weekly.

Consumables8% of the score51

Evidence

The mulching blade is replaced as a complete disc rather than as individual blades, at least once per season by manufacturer guidance, which is a larger unit cost than a blade-and-screw set, and the record carries no price for it. Boundary wire, staples and splice connectors recur on top. The real problem is not cost but supply: the disc comes through a retailer network that no longer carries the series. No subscription of any kind.

middle half of the databaseits medianthis robot

Reported, not scoredneither measures how well the robot works

Five-year cost$2,050

Middle of the range in absolute terms and poor value in context, because most of it buys a nine-year-old platform. Figured on roughly $1,500, the USD equivalent of the 1,199 pound UK price for the RC308U variant that is the only live retail the record identifies, plus five mulching discs across five years at the once-per-season minimum, an allowance for wire, staples and splice connectors beyond the starter kit, and one replacement battery pack. No subscription. The disc price is an estimate because the record carries none, and the larger caveat is availability rather than money: a US buyer has no retail channel for either the machine or its parts.

Data postureCloud-linked

Account required. Maps and telemetry leave the home; core function survives an outage.

What leaves the homeNot documented

Read the full methodology →

FIT CHECK

Will the Robomow RC308 Pro X work on your yard?

Describe your yard using the controls. Each choice reads the spec sheet for you, flagging where the Robomow RC308 Pro X is built for your space and where it isn’t.

Yard size

Terrain

Grass type

Boundary setup

See every robot mower suited to these conditions

A classification of fit for the conditions you set, not a recommendation. Verdicts describe engineering design intent, not test results.

SPECIFICATION

The full spec sheet.

Manufacturer-published figures, measured against every robot lawn mower we track.

Dimensional drawing

Key specificationsManufacturer-published

Footprint: 18.1 × 24.8 in · 8.3 in tall
Weight: 25.1 lbs
Network: Cellular

Where it lands · ranked across 101 robot lawn mowersThis robotMedianTypical range

Runtime70min

30 min240 min

Near median

Noise64dB

50 dB82 dB

Above median

Charge time90min

30 min300 min

Near median

Weight25.1lbs

13 lbs134 lbs

Near median

Position shows where the figure sits across the tracked category, not a quality judgment.

Official referencesManufacturer site

OWNERSHIP

Living with it.

Solid seasonal performer once the perimeter wire is correctly installed and maintained.

Owner reports across retail platforms (2017-2024) document consistent mowing performance through multi-season use. The most frequent reported issue is perimeter wire damage from aerators or ground movement, which halts operation until the break is located and spliced. Dock connectivity and rain-sensor reliability are generally reported as stable.

Owner effort~30 minhands-on per month

Consumables$45replaceable parts / yr

Reliability trend Stableowner-reported arc

What goes wrong · 4 documented · 0 self-recover

Occasional

Perimeter wire breakMower cannot operate until wire is repaired

Owner fixLocate break with detector; splice damaged section

Occasional

Blade disc wearReduced cut quality, uneven finish

Owner fixReplace blade disc at season start

Occasional

Debris entanglementMower stops and triggers lift alarm

Owner fixClear underside debris before each session

Rare

Dock contact failureMower fails to charge; drains fully

Owner fixClean contact pins with dry cloth

Step-by-step fixesBoundary Wire BreakCutting Uneven or Scalping the Lawn?Won’t Charge or Return to Its Base?All robot mower guides

Upkeep routine

Weekly52×/yr

Clear grass clippings and debris from blade disc, undercarriage, and sensor surfaces.

Monthly12×/yr

Inspect perimeter wire at visible surface sections for damage or displacement; check dock contact pins for corrosion.

Seasonal4×/yr

Replace mulching blade disc; manufacturer guidance recommends at least once per mowing season. · Store mower indoors over winter with battery partially charged; clean dock and charging contacts before returning to service in spring.

As neededno fixed schedule

Trace and splice any perimeter wire break using a wire-break detector before resuming operation. · Reprogram mowing zones or schedule after yard layout changes or guide-wire additions for internal obstacles.

Safety notes

NoteBlade exposure risk on lift: Blade disc stops within seconds of lift detection; keep hands clear until rotation fully stops

NoteChild and pet monitoring advised: Wire boundary is not a physical barrier; supervise young children and pets during active sessions

NoteSlope operation on wet grass: Traction decreases on wet slopes; rain sensor pauses operation but manual gradient assessment is needed after heavy rain

RECORD

How the assessment has moved.

Every announcement, release and reassessment behind the current classification.

Coming soon

Just launched

Active updates

Settled

Discontinued

Aug 2026 · AssessmentReadiness reassessed: Limited Availability → Ready Now
Aug 2026 · AssessmentReadiness reassessed: Ready Now → Limited Availability
Aug 2026 · AssessmentRecord status: Verified → Pending
Aug 2026 · AssessmentRobovations Score revised 58 → 60
Aug 2026 · AssessmentRobovations Score rescored under v4.2: 56 → 58
Aug 2026 · AssessmentRobovations Score rescored under v4.0: 64 → 56
Jul 2026 · AssessmentRobovations Score revised 58 → 64
Jul 2026 · AssessmentRobovations Score recorded at 58 of 100

Editorial comparisons

How Robomow RC308 Pro X compares.

All comparisons →

Tech shift

Robot mower blades: pivoting discs vs. fixed decks

Husqvarna Automower 415X + 4 more

Read comparison

Common questions

What people actually ask.

5 answered

OperationDoes the RC308 require burying the perimeter wire, or can it lie on the surface?

Robomow installation documentation (2017) allows surface installation with staples as well as shallow burial. Burial (typically 1-3 inches) provides better lawn-mower and foot-traffic protection; surface installation is faster but more vulnerable to accidental damage.

CompatibilityCan I use the Robomow app to control the RC308 Pro X from anywhere?

The RC308 Pro X connects to the Robomow app over Bluetooth for full control near the mower. There is no Wi-Fi option. The GSM module included on Pro variants adds one-way remote alerts such as stuck notifications and mowing history, but full remote control from outside Bluetooth range is not supported.

OperationWhat happens if the RC308 encounters rain mid-session?

A built-in rain sensor pauses operation and returns the mower to its docking station automatically. Owner reports (2017-2024) indicate the sensor responds reliably to moderate rainfall; light drizzle may not always trigger a return-to-dock.

OwnershipHow do I replace the RC308's blade, and how often is replacement needed?

The mulching disc blade is replaced as a unit; no individual blade removal is required. Manufacturer guidance recommends replacement at least once per season for standard use. Replacement blades are available through Robomow’s authorized retailer network.

OperationDoes the RC308 have anti-theft protection if someone tries to take it from the yard?

A PIN-coded anti-theft alarm activates when the mower is lifted without the correct PIN entered first. If the PIN is not entered, the alarm sounds and the mower stops operating. This is a standard feature across the RC series.

Cite / Embed

Reference the Robomow RC308 Pro X classification.

Embed the Autonomy Ladder™ mark or copy the citation. The mark is served from this record, so a reassessment updates it on your page automatically.

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Citation

Robovations. "Robomow RC308 Pro X: Autonomy Level II (Assisted Autonomy)." Autonomy Ladder™, assessed August 2026. https://robovations.com/robots/robomow-rc308-pro-x/

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A classification, not an endorsement. It may not appear beside language implying Robovations recommends, rates, or approves the product.

Where to next

Three ways to keep going.

For evaluators

Compare with a peer.

See the Robomow RC308 Pro X and Flymo EasiLife Go 200 side by side: autonomy level, Robovations Score, readiness, and price. Classification, not a verdict.

See the full comparison

Or compare with Stihl iMow 6 EVO, McCulloch ROB R1000, Ambrogio Twenty Elite.

For browsers

See every Level II.

Every robot we’ve classified at assisted autonomy. Sorted by readiness, score, and price. Filter by category, manufacturer, or release date.

Browse the database

Updated weekly with new entries and reclassifications.

Robomow RC308 Pro X

Will the Robomow RC308 Pro X work on your yard?

The full spec sheet.

Living with it.

How the assessment has moved.

How Robomow RC308 Pro X compares.

Robot mower blades: pivoting discs vs. fixed decks

What people actually ask.