Test / E-bike: The Moustache Lundi 27 has been the urban flagship of for over a decade. MoustacheFor 2026, the French have not completely redesigned their low-entry vehicle, but have made a crucial modification: For the first time, a [missing word - likely "engine"] is used in a [missing word - likely "engine"]. Moustache No mid-drive motor, but the new Bosch Hub Line hub motor in the rear wheel. This makes the bike lighter, simpler, and significantly cheaper. We are the Moustache Lundi 27 drove through Stuttgart for a day.
Moustache Lundi 27: An urban classic in a new guise
The model series dates back to 2012, when Moustache Lundi introduced the Lundi 26, a step-through frame with 26-inch wheels. In 2022, they switched to the current 27,5-inch wheel format, and now, for 2026, the latest generation, including a limited launch edition, is available in stores. For the brand from the Vosges Mountains, the Lundi is more than just another model: it's the bike with which Moustache the topic of everyday mobility is addressed.
Moustache Founded as a pure e-bike brand, the company develops and assembles all its bikes in France and derives its name from a historical handlebar shape that still serves as a distinguishing feature, for example on the Lundi 27. The guiding principle? To leave the car in the garage as much as possible: many short trips several times a day, longer commutes in urban areas, and commuters who want to combine their commute with exercise. All of this can usually be done comfortably by e-bike.
With the new edition, the aim is to Moustache According to the company, their primary goal is to reach people buying their first e-bike and make entry more affordable. This is reflected in their product range. At €2.399, the Lundi 27 is the most affordable complete bike in their urban lineup; the Mardi 27 family starts at €3.399, the Lundi 20 Cargo at €3.799, and the top end of the range reaches almost €6.000. The Lundi 27 is therefore the entry point, and the switch to a hub motor is what makes this price point possible.
What remains and what changes
The basic formula Moustache Little changed. The Lundi 27 remains available exclusively as a step-through model, the aluminum frame with its distinctive MoustacheThe new handlebars offer a welcome visual change. The upright, comfort-oriented riding position remains unchanged, as does compatibility with the entire in-house accessory range and the permissible total weight of 150 kilograms including rider, luggage, and accessories. Development and assembly continue to take place in the Vosges Mountains.
In addition to the drive concept, the size range is also new: The Lundi 27 comes in two frame sizes, XS/S for riders between 155 and 165 centimeters tall and M/L for riders between 162 and 190 centimeters tall. The manufacturer promises a weight saving of up to 3,5 kilograms compared to its predecessor, as well as smoother and quieter handling and very low pedaling resistance above 25 km/h. The latter is an important point for a hub motor, because unlike a mid-drive motor, it is not involved in the chain's power flow and therefore doesn't have to be dragged along when riding without assistance.
Bosch Hub Line: the first hub motor from the market leader
The real heart of the update is the Bosch Hub Line, the first hub motor from Reutlingen. It is part of the Bosch Smart System and thus integrated into the familiar network, which means one thing above all for dealers and customers: familiar diagnostic and service procedures instead of the often tedious search for spare parts that accompanies many hub motors from smaller manufacturers.
The technical specifications
The Hub Line delivers a maximum torque of 45 Nm and a maximum power output of 400 watts, weighs 2,4 kilograms, and, with a diameter of approximately ten centimeters, is relatively compact. Bosch itself equates the 45 Nm in its documentation with the 65 Nm of a mid-drive motor; this is a statement about the riding feel and not a physical equivalence, but it has a practical basis because the power is applied directly to the rear wheel and not via the gearing.
Sensor fusion instead of torque sensor
The most interesting aspect lies in the control system. The Hub Line doesn't have a torque sensor at the bottom bracket, like those used by mid-drive motors and high-end hub motors to measure the rider's actual pedaling force. Instead, Bosch relies on a concept the manufacturer calls Sensor Fusion: The signals from the speed sensor, cadence sensor, and an inertial measurement unit are combined to calculate the appropriate level of assistance. A finely perforated disc at the bottom bracket scans the crank movement with a very high degree of precision.
The four available modes are Eco, Tour, Auto, and Turbo, with Auto mode adjusting the level of assistance depending on the situation. According to Bosch, further assistance levels are currently being evaluated. How well this concept works in practice is the crucial question for this bike, and we will discuss this in more detail below.
Battery, peripherals and equipment
The new PowerTube 360 serves as the energy source; at 2,1 kilograms, it's the lightest battery in the Bosch range. It's removable and sits in the downtube, adjustable via a [unclear - possibly a control or adjustment mechanism]. Moustache-The carrying strap is convenient to take along. While this doesn't make the Lundi 27 a full-day tourer, the battery should be sufficient for everyday use. With a 4-amp charger, the battery is half full again after 54 minutes and fully charged after 1 hour and 56 minutes. If the range is still too short, the PowerMore 250 range extender can be retrofitted.
The Purion 200 serves as the control unit; a large display is not included. A smartphone grip on the handlebars and the Connect module with GPS tracking are available as options. Standard equipment includes a MIK-HD/QL3-compatible rear rack, an Abus frame lock with a U-lock mount, a suspension seatpost, and a lighting system. Braking is handled by Shimano MT200 brakes with 180 mm rotors at the front and 160 mm at the rear, and the rims are fitted with Schwalbe Super Moto-X tires in 27,5 x 2,4 inches. There is no suspension fork.
Two drive options, two price tags
The Moustache The Lundi 27 is available in two drivetrain configurations. The version with a Gates belt drive and singlespeed is designed for flat terrain, is virtually maintenance-free, and at 23,5 kilograms, is the lighter of the two. The variant with a 9-speed Shimano Cues drivetrain is aimed at hilly to moderately mountainous terrain and weighs 24,1 kilograms. Both cost €2.399 and are available in glossy black, glossy stone grey, matte lavender, and glossy avocado.
Above this is the Launch Edition, limited to 270 units and priced at €2.899. It comes in the special color Chromatic Blue with reflective stickers, features a 10-speed Cues drivetrain, and includes virtually all original accessories: Bosch Connect module, smartphone grip, rear fender, U-lock mount, and a MIK front rack with an offset-mounted 80-lux headlight. The €500 surcharge is fairly calculated considering the range of accessories. Market launch is September 2026.
The Moustache Monday 27 in practice
For the practical test, we spent a full day riding the Cues version in Stuttgart, using the larger frame size M/L. The city is not known for its flat terrain or outstanding bike paths, making it a suitable test area for a bike of this class.
Seating position and frame sizes
The entry is low, the seating position upright and relaxed, the curved MoustacheThe handlebars not only offer a distinctive look but also a comfortable, wrist-friendly grip position. In a segment where bikes often look so similar as to be indistinguishable, the unique design is a real plus.
We are somewhat more critical of the sizing. Offering only two frame sizes is borderline, as there's no truly large option. Our 1,87-meter-tall tester was at the upper end of what M/L covers. After ten to twenty minutes, this wasn't noticeable anymore, but a larger size would have been the better choice. We would like to see... Moustache We will add more here in the future.
Comfort without a suspension fork
At first glance, foregoing a suspension fork might seem like a cost-cutting measure, especially since it's high on many buyers' wish lists, particularly in the city bike segment. However, in practice, we hardly missed it on Stuttgart's cobblestones, undulating asphalt, and root-strewn bike paths. This is thanks to two components: the very voluminous Schwalbe tires, which, with the correct air pressure, absorb a surprising amount of impact and even perform better than a simple suspension fork when dealing with high-frequency vibrations, and the standard suspension seatpost. The limitations only become clearly noticeable with sharp, isolated impacts, such as lowered curbs or potholes. Nevertheless, for its intended use, it's a good compromise that also saves weight and maintenance.
Speaking of weight: Despite the weight savings compared to its predecessor, the Moustache The Lundi 27, weighing around 24 kilograms, is not exactly lightweight. Anyone who regularly has to carry their bike up stairs should take that into account.
The hub motor in everyday life
On paper, the Hub Line's performance is considerably less than Bosch's weakest mid-drive motor, the Active Line Plus. However, this difference is barely noticeable while riding. The direct power delivery to the rear wheel makes the drive feel subjectively more powerful than the figures suggest; in practice, it performs at roughly the same level. The power output is sufficient for urban riding.
It's remarkable how well Bosch has solved the classic problem of omitting a torque sensor. Typically, such drives continue to provide assistance for a short time after coming to a stop, because the system needs a moment to register that the rider has stopped pedaling. Delays of up to a second are not uncommon. With the Hub Line, this effect simply doesn't occur; the assistance ends immediately. This is a real safety advantage in city traffic, where there's a traffic light or crosswalk every few hundred meters.
The lack of torque measurement, however, cannot be completely masked. Once you're up to speed, simply continuing to pedal is enough to activate the system's assistance. Even if you shift into a very low gear and let your feet roll along without exerting significant force, you'll still be pushed. This doesn't feel natural, and anyone who views cycling as exercise will find it bothersome. On the other hand, it's hard to imagine a more comfortable way to travel on a modern e-bike.
The verdict on noise level is mixed: The Hub Line is quieter than virtually all Bosch mid-drive motors, but comparatively loud for a hub motor. There are drives of this type that operate much more discreetly. However, in city traffic with wind, cars, and pedestrians, the noise is completely masked.
Belt or chain?
The choice of drivetrain should be taken seriously, as it is more crucial than the lack of a price difference might suggest. For a topographically challenging city like Stuttgart, we wouldn't recommend the singlespeed version with a Gates belt drive. On steep inclines, you'd have to pedal noticeably hard, which directly contradicts the requirements of a comfort-oriented everyday bike. In flat cities, however, the belt drive demonstrates its advantages: no chain oil, no wear on sprockets, and virtually no maintenance.
Accessories and ecosystem
Around the Lundi 27 Moustache A well-thought-out accessory program has been developed. The MIK-compatible luggage rack accommodates, among other things, a Eurobox-compatible box from their own product line, which can be attached without tools. In addition, there's a front rack, a handlebar bag, and the aforementioned smartphone grip. Given the lack of a large display, we would even prefer the latter to be standard equipment, as the smartphone is the obvious navigation and display device for the target group anyway. The fact that the maximum permissible weight is 150 kilograms provides ample leeway when loading.
