Robomow RC308 Pro X · Stihl iMow 6 EVO

Random-path coverage works, but there is no guarantee of uniform pass distribution: owner reports note occasional missed strips near the boundary in a given session, with full coverage achieved over multiple runs.

Perimeter wire is the system’s foundation and its single point of maintenance risk: a wire break from an aerator or root heave requires tracing and splicing before the mower can operate.

Three EVO generations in, STIHL still buries the boundary wire; anyone hoping the EVO name meant a move to wire-free navigation will not find it here.

The extra size and a slope rating up to 55 percent with the kit cost more than the 5 EVO, and dealer-set pricing makes the actual number hard to pin down before a quote.

German testers found a clean mulching cut, but also a documented failure mode: the machine can be stranded on the smallest edges of steep ground.

Yards requiring wire-free virtual boundary setup

No GPS or camera-based virtual boundary option exists. Owners who cannot or will not install perimeter wire have no workaround for this model.

Large yards above 800 m² needing complete, predictable coverage

Random-path mowing on areas at the model's coverage limit risks uneven pass distribution. Larger or coverage-critical yards need the RS or higher-capacity line.

Heavily landscaped yards with dense internal obstacles

Interior islands and complex garden beds require additional guide wires. The more internal wiring involved, the greater the planning and maintenance burden.

Owners expecting zero-setup deployment

Perimeter wire installation is mandatory before first use. Professional installation is available but adds cost; no plug-and-play configuration exists for this model.

Anyone trying to avoid wire installation

Three EVO generations in, the boundary is still a buried wire with the install labor and repair risk that implies; no wire-free option exists in this line.

Lawns under a quarter acre

A rated ceiling of about 0.74 acres is well beyond what a small lawn needs; the 4 or 5 EVO covers that area at a lower price point.

Steep edges and corners at the lawn boundary

German testers document the machine getting stranded specifically at small edges, where its weight becomes an obstacle it cannot clear on its own without a manual reset.

Buyers wanting a transparent, published price

Pricing is dealer-set rather than list, which makes the real cost hard to compare against other autonomous mowers before requesting a dealer quote in person.