“This source introduces the new Gardena Sileno 'free' models, which operate without a boundary wire, contrasting them with the standard 'max' models that still require one. It presents the model lineup and pricing for both the wire-based and wire-free versions, including the Sileno max 800 m². The article notes that the market launch for the 'free' models seems to have been delayed, possibly due to technical difficulties with the new technology.”

“Der Gardena smart SILENO max 800 m² wird als fortschrittlicher und benutzerfreundlicher Mähroboter beschrieben. Er nutzt LONA™-Intelligenz, um die Gartengestaltung zu erlernen und seine Mähmuster anzupassen. Zudem sorgt die Trim-to-Edge-Funktion für einen präzisen Kantenschnitt.”

“This YouTube video from the 'Tofanger : Unboxing Channel' showcases the Gardena smart SILENO max working precisely along a virtual boundary. The video demonstrates the mower recognizing a no-go zone, mowing cleanly along the edge, and changing direction effectively, highlighting the successful interplay of app control, sensors, and navigation.”

“PCMag reviewed the Gardena Sileno City, a model for smaller lawns, and found it to be an affordable and reliable option that performed well in tests. While it's not the feature-richest model, its quiet operation and easy scheduling via the app were highlighted as strong points, despite some initial pairing difficulties.”

“Testsieger.de gives the GARDENA smart SILENO max 800 m² a score of 70. The review highlights the mower's LONA™ Intelligence and Trim-to-Edge precision mowing technology. It is positioned as a product for those seeking advanced features in lawn care.”

“The Gardena Sileno Free 800 is praised for its extremely quiet operation, making it ideal for residential areas. However, the review is highly critical of its performance, citing a frustrating and error-prone setup, chaotic mowing based on a random principle, and a lack of transparency in the app regarding mowing coverage. The reviewer concludes that despite its high price, it is inferior to competitors, especially those using RTK or Lidar navigation, in terms of mowing logic, accuracy, and app functionality.”

“A video demonstrates the Gardena smart SILENO max's precision in mowing along virtual zone boundaries, even maneuvering with its rear. Its sensors enable it to stop for obstacles and resume mowing in a new direction, making it ideal for complex gardens. This demonstration is part of a detailed product test on garden-shop.at.”

“This YouTube channel has several short, non-narrated videos showcasing the GARDENA smart SILENO max 800 m² in action. The videos depict the mower cutting tall grass and undergoing service, but do not offer a verbal or written review, analysis, or opinion on its performance.”

“Robot-lawn-mower.net includes the Gardena smart SILENO max 800-1500 in its 2026 comparison table for mowers requiring a boundary wire. The site notes that for full app functionality, the smart Gateway is required, which is sold separately. It lists the mower's capabilities as handling areas from 800 to 1,500 m² with slopes up to 30%.”

“In a detailed video review, Nord-Domotique presents the GARDENA smart SILENO free 800 m², highlighting its easy, cable-free installation and app-based configuration. The reviewer is impressed by its quiet operation, precision, and LONA technology. The Trim-to-Edge function, which cuts close to borders, and its ability to handle slopes up to 30% are noted as significant advantages for easy garden maintenance. The anti-collision sensor is mentioned as a separate, optional accessory.”

“A user on Reddit shares their negative experience with the Gardena Smart Sileno Free 1200, a similar wire-free model. They report being close to returning the device due to frequent, unexplained stops that required manual restarting every couple of hours. The user expresses frustration with Gardena's customer support, which offered standard FAQ answers and suggested replacing the new wire-free model with a corded one that was half the price.”

“The Gardena smart SILENO Max 800 is praised for its ability to mow cleanly along lawn edges, getting as close as 1 cm, which results in a tidy appearance. It operates very quietly at a maximum of 58 decibels. A notable limitation is that it cannot navigate over thresholds, making it suitable only for flat lawns without such obstacles.”

“In a detailed 2026 comparison of Gardena's SILENO models, Drohnen.de positions the SILENO max series as a powerful, reliable choice for those who prefer the stability of a boundary wire over newer, wire-free technologies. It is described as the upper-class model of the traditional Gardena lineup, suitable for larger, complex gardens and valued for its consistency, quiet operation, and smart LONA intelligence. It is contrasted with the newer 'sense' models, which are wire-free but may be less reliable depending on GPS and camera conditions.”

“In its test, COMPUTER BILD found the Gardena Smart Sileno life 1500 (a larger model in the same series) to be pleasantly quiet and noted very few failures during mowing operations. The review highlights the LONA mapping and zone management as key features. While it requires a boundary wire for setup, the mower is praised for its reliable performance and good cutting results, ultimately leading to a well-maintained lawn.”

“Der Gardena Smart SILENO Max 800 ist für Rasenflächen bis 800 m² konzipiert und verfügt über ein Mähsystem mit zwei Messerscheiben. Zu den Funktionen gehören 'SensorControl' zur Anpassung der Mähzeiten an das Graswachstum, 'SpotCutting' für das Mähen dichterer Bereiche in Spiralen und 'CorridorCut' für die Navigation in engen Passagen. Das Gerät ist IPX5-zertifiziert, was die Reinigung mit Wasser ermöglicht, und arbeitet mit einem Geräuschpegel von 58 dB(A). Die Steuerung erfolgt über die Gardena Bluetooth App.”

“Testberichte.de describes the GARDENA smart SILENO max for 800 m² as an efficient solution for medium-sized gardens. It praises the improved navigation for complex layouts and the intuitive control via the Gardena Smart System. However, it notes potential limitations on very uneven terrain as a weakness. Overall, it's considered a powerful robotic mower that offers convenience despite its higher price.”

“The YouTube channel Backyard Assist reviewed a Gardena Sileno model, noting its quiet operation and decent app with scheduling. However, they did not recommend it, citing significant drawbacks. The setup was described as a hassle due to the boundary wire, which was prone to getting sliced. Other cons included the inability to adjust the cutting height and the mower only being suitable for short lawns.”

“The GARDENA smart SILENO max is designed for larger lawns (800 m² to 1,500 m²) and features a quiet 57 dB(A) operation, Bluetooth app control, and advanced functions like Trim-to-Edge and CorridorCut. It requires a boundary wire and has a cutting height of 25-45 mm. One user commented that their previous Gardena model was more reliable than a Worx mower.”

“The YouTube channel "Brighter Santitan" provides a detailed user review of a Gardena Sileno model. The reviewer finds the installation process, particularly laying the boundary and guide wires, to be straightforward. However, he criticizes the amount of included cable as insufficient and considers the official Gardena garage accessory to be overpriced. He also notes that due to the design, the mower leaves edges unmown.”

“A reviewer on Galaxus had a frustrating eight-week test with the wire-free Gardena Sileno Free, ultimately giving it a low rating. While acknowledging design improvements like a top handle and a quieter motor, the primary issue was persistent problems with the satellite signal, causing the mower to frequently lose its way. Despite the promising concept of cable-free mowing with LONA Intelligence, the unreliable performance led to the reviewer banishing it from their garden.”

“The Gardena smart SILENO max is described as the flagship among Gardena's traditional robotic mowers that use a boundary wire. It focuses on maximum reliability and proven technology, positioning it as a choice for users who prioritize stability and performance over the innovation of wire-free models. The review highlights its reliability in complex gardens, independence from GPS signals, and consistent performance in narrow passages, making it a strong competitor to premium models from other brands.”