The BMW CE 04 represents a radical departure from conventional two-wheeled design, utilizing a unique flat battery architecture directly derived from BMW’s automotive ‘i’ division. Unlike traditional scooters that build around an engine, the CE 04 is engineered around a low-slung 8.9 kWh lithium-ion battery pack, effectively lowering the center of gravity to levels previously unseen in the urban mobility segment.
| Quick Specs: BMW CE 04 (2022–Present) | |
|---|---|
| Production Years | 2022–Present |
| Final Drive Oil | BMW Hypoid Axle Oil G3 (SAE 70W-80) |
| Oil Capacity | 0.25 L |
| Front Tire | 120/70 R15 56V |
| Rear Tire | 160/60 R15 67V |
| Tire Pressure (F/R) | 2.5 bar / 2.9 bar |
| Auxiliary Battery | 12V 12Ah AGM |
Engineering Overview: The Silent Revolution
The BMW CE 04 is powered by a liquid-cooled permanent magnet synchronous motor, capable of delivering a peak output of 31 kW (42 hp). The technical marvel lies in its thermal management system, which uses a dedicated cooling circuit to ensure the high-voltage battery and power electronics operate within their optimal temperature windows, even under heavy urban stop-and-go conditions. The frame is a robust tubular steel construction, providing the torsional rigidity required for its long 1,675 mm wheelbase.
Maintenance Essentials
Final Drive Lubrication
While the CE 04 eliminates the need for engine oil, the reduction gearbox (final drive) still requires high-quality lubrication. BMW specifies Hypoid Axle Oil G3 (SAE 70W-80). With a precise capacity of 0.25 liters, maintenance intervals should be strictly followed to prevent wear on the internal gearing. Always ensure the vehicle is level when checking or replacing the gear lubricant.
Tires and Chassis Dynamics
The CE 04 utilizes 15-inch wheels that bridge the gap between scooter agility and motorcycle stability. To maintain the intended handling characteristics and maximize range, tire pressures must be kept at 2.5 bar (36.3 psi) for the front and 2.9 bar (42.1 psi) for the rear. Given the high torque delivery of the electric motor, tire wear on the rear 160/60 R15 should be inspected every 2,000 km.
The 12V Auxiliary System
Even though the traction battery powers the motor, the CE 04 relies on a 12V 12Ah AGM battery to manage the onboard electronics, TFT display, and lighting systems. If the vehicle is stored for extended periods, a compatible BMW Motorrad battery charger should be used to maintain the 12V system, as a failure here will prevent the high-voltage contactors from engaging.
FAQ
Does the BMW CE 04 have spark plugs?
No. As a fully electric vehicle, the CE 04 does not utilize an internal combustion engine, therefore it has no spark plugs or traditional ignition system.
How often should I change the final drive oil?
BMW typically recommends an initial check at the 1,000 km run-in service, with subsequent changes every 20,000 km or 2 years, though technical service bulletins may vary by region.
What is the benefit of the AGM battery?
The 12V 12Ah AGM battery provides high vibration resistance and leak-proof operation, which is critical for the compact electronic packaging found within the CE 04’s chassis.