Oil and filter change
≈ 10,000 km or 1 year
JASO MA or MA2 approved four-stroke motorcycle oil (JASO MB on scooters): an “energy conserving” car oil makes the wet clutch slip. Change it more often in city use or on track.
Source [1]C 400 · 2019–…
BMW C 400 GT · 34 hp (2019 to date)
The BMW C 400 GT uses the BMW 350 scooter petrol engine with 34 hp.
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Download the service plan (PDF)
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Technical specifications
- Fuel
- Petrol
- Power
- 34 PS / 25 kW
- Displacement
- 350 cm³
- Cylinders
- 1
- Engine code
- BMW 350 scooter
- Period covered
- 2019–…
- Documented market
- Europe
Transmission
- Automatic variator (CVT)
Figures apply to the cited configuration and market; equipment and transmissions may vary by production date.
Specification source : [1] AutoKarnet
This version
34 hp (25 kW), variator transmission, automatic variator (CVT). Built from 2019 to date.
AutoKarnet advice
Body style and inspection points
On a scooter, have the variator belt and rollers checked when due, even if the scooter covers little distance in town. Also check the small-diameter tyres, which wear fast, the lights and the centre stand; a slipping belt is felt when pulling away.
AutoKarnet advice
Distinguishing similar versions
Among the C 400 pages, the X 34 hp offers a comparison: 34 hp (25 kW), BMW 350 scooter, 350 cm³, automatic variator (CVT), from 2018. The version on this page has 34 hp (25 kW), BMW 350 scooter, 350 cm³, automatic variator (CVT), from 2019. When requesting a quote, specify the output and gearbox; the marketing name alone does not identify the correct parts.
AutoKarnet advice
Maintenance and records
≈: estimated reference — the vehicle’s service indicator prevails.
Brake fluid
Every 2 years
Replace the fluid in both circuits (and the hydraulic clutch if fitted), whatever the mileage; dark fluid has absorbed moisture.
Source [1]Fork oil
≈ 30,000 km
Fork oil change and seal check; an oil film on the tubes means a seal needs replacing before it contaminates the brake caliper.
Source [1]Final drive oil
≈ 20,000 km
The rear-wheel gearcase has its own oil, separate from the engine oil; replace it when the service book says, often with the variator belt.
Source [1]Spark plugs
Every 20,000 km
Replace the full set; worn plugs raise consumption and cause misfires.
Source [1]Air filter
Every 20,000 km
Replace more often in dusty conditions.
Source [1]Valve clearance
Every 20,000 km
Check and adjust if needed, often together with the plugs; too little clearance burns the valves, too much makes the engine noisy.
Source [1]Variator belt and rollers
Every 20,000 km
Replace the belt and check the rollers and clutch; a worn belt makes the scooter slip and can snap while riding.
Source [1]Coolant
Every 3 years
Replace the coolant and check the hoses and radiator; check the level cold between services.
Source [1]Questions about this version (3)
Which engine is in the BMW C 400 GT?
The BMW 350 scooter petrol engine (350 cc), 34 hp (25 kW).
AutoKarnet advice
Which oil for the BMW C 400 X / GT GT?
A JASO MA2 10W-40 four-stroke motorcycle oil suited to the BMW 350 scooter engine.
AutoKarnet advice
How do I check this page matches my car?
This page covers BMW C 400 X / GT · C 400 GT 34 hp, scooter, from 2019, with 34 hp (25 kW), BMW 350 scooter, 350 cm³, automatic variator (CVT), from 2019. Compare these details with the registration document and gearbox identification. The designation BMW 350 scooter may cover several revisions: a VIN is still needed to confirm part numbers.
AutoKarnet advice
Documentary sources
- [1] Rédaction AutoKarnet
AutoKarnet · FR · Europe · Synthèse éditoriale AutoKarnet · Accessed 09/10/2026