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2020 BMW C 400X Overview
The 2020 BMW C 400X is a scooter motorcycle built around 350 cc of displacement. Under the tank sits a Single cylinder, four-stroke engine running Overhead Cams (OHC) valve actuation, a compression ratio of 11.5:1. 2020 BMW C 400X delivers 25.3 kW @ 7500 rpm of peak power and 34.3 Nm @ 6000 rpm of torque. The factory-quoted top speed stands at 139 km/h, making it a capable performer in its class. From a practical standpoint, the 2020 C 400X tips the scales at 204 kg, carries a 12.8-litre fuel tank, offers a seat height of 775 mm and spans a 1564.5 mm wheelbase. Scroll down for the complete 2020 BMW C 400X spec sheet covering every technical detail from suspension travel to tyre sizes.
2020 C 400X - Pros & Cons
Strengths
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Strong power output: 2020 BMW C 400X makes 25.3 kW @ 7500 rpm with 34.3 Nm @ 6000 rpm of torque - competitive figures for its class.
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Fuel injection: The fuel injection injection system delivers crisp throttle response and reliable cold starts regardless of altitude or temperature.
Considerations
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Age-related wear: As with any used C 400X, a thorough pre-purchase inspection covering consumables, service history and tyres is always recommended.
Owner Experiences & Common Issues
Throttle response and fuelling
The fuel injection on the 2020 BMW C 400X is generally well-regarded. Some owners note a slight hesitation at small throttle openings when cold, which clears once the engine reaches operating temperature. A quick visual check of the injector connectors during routine servicing is good practice on higher-mileage examples.
C 400X - Buying & Maintenance Guide
What to check before buying
When inspecting a used 2020 BMW C 400X, start with the basics: check the service book for oil change frequency, inspect the chain and sprockets for wear, and look for oil seepage around the engine casings and rocker covers. A cold start test is invaluable - a well-maintained C 400X should fire up cleanly and settle to a smooth idle within a few seconds.
Oil and filter changes
Regular oil changes are the single most important maintenance task on any C 400X. Stick to the manufacturer's interval - typically every 6,000 km or once a year, whichever comes first. Always use the correct viscosity grade as specified in the owner's manual.
Fuel system care
The C 400X's fuel injection system is durable but benefits from quality fuel and the occasional use of a fuel-system cleaner additive. If the bike has been stored for more than three months, drain and replace the fuel to prevent varnish deposits in the injectors.
2020 BMW C 400X - Frequently Asked Questions
What engine does the 2020 BMW C 400X have?
The 2020 BMW C 400X uses a Single cylinder, four-stroke engine with 350 cc of displacement. It is liquid cooled.
What is the top speed of the 2020 BMW C 400X?
The 2020 BMW C 400X has a factory-quoted top speed of 139 km/h. Real-world speeds vary depending on rider weight, conditions and state of tune.
How much does the 2020 BMW C 400X weigh?
The 2020 BMW C 400X weighs 204 kg. This is the manufacturer's wet figure.
How much power does the 2020 BMW C 400X make?
The 2020 BMW C 400X produces 25.3 kW @ 7500 rpm of power and 34.3 Nm @ 6000 rpm of torque. These are peak figures.
What is the fuel tank capacity of the 2020 BMW C 400X?
The 2020 BMW C 400X has a 12.8-litre fuel tank.
Is the 2020 BMW C 400X suitable for shorter riders?
The 2020 BMW C 400X has a seat height of 775 mm. This is a moderate seat height that suits a wide range of rider heights.
What brakes does the 2020 BMW C 400X have?
The 2020 BMW C 400X uses 2x 265mm Rigid discs 4 piston caliper at the front and Single 265mm disc 1 piston caliper at the rear.
What tyre sizes does the 2020 BMW C 400X use?
The 2020 BMW C 400X runs 120/70 ZR15 front and 150/70 ZR14 rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.
What gearbox does the 2020 BMW C 400X have?
The 2020 BMW C 400X is fitted with a Continuously variable CVT belt transmission transmission.
BMW C 400X Spec Evolution
The BMW C 400X was produced across 5 model years (2019-2025). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.
| Specification |
2019 |
2020 |
2021 |
2023 |
2025 |
| Max Power |
25.3 kW / 34 hp @ 7500 rpm |
25.3 kW / 34 hp @ 7500 rpm |
25 kW / 33.5 hp @ 7500 rpm |
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25 kW / 33.5 hp @ 7500 rpm |
| Wet Weight |
204.0 kg / 449.7 lbs |
204 kg / 450 lbs |
206 kg / 454.1 lbs |
204.0 kg / 449.7 lbs |
208 kg / 458.6 lbs |
| Dry Weight |
193 kg / 425.5 lbs |
193 kg / 425.5 lbs |
195 kg / 429.9 lbs |
193 kg / 425.5 lbs |
197 kg / 434.3 lbs |
| Top Speed |
139.0 km/h / 86.4 mph |
139.0 km/h / 86.4 mph |
139.0 km/h / 86.4 mph |
153.0 km/h / 95.1 mph |
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| Seat Height |
775 mm / 30.5 in. |
775 mm / 30.5 in |
775 mm / 30.5 in |
775 mm / 30.5 in. |
775 mm / 30.1 in |
| Fuel Capacity |
12.8 Litres / 3.4 US gal |
12.8 Litres / 3.4 US gal |
12.8 Litres / 3.4 US gal |
12.80 litres / 3.38 US gallons |
12.8 Litres / 3.4 US gal |
| Comments |
Windscreen. |
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Automatic Stability Control |
Automatic Stability Control |
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| Frame Type |
Tubular spaceframe |
Tubular spaceframe |
Steel tube construction with aluminum die cast unit |
Tubular steel with die-cast aluminum sections |
Steel bridge-type frame |
Key Specifications
Engine
Single cylinder, four-stroke
Power
25.3 kW / 34 hp @ 7500 rpm
Torque
34.3 Nm / 25.8 lb-ft @ 6000 rpm
Top Speed
139.0 km/h / 86.4 mph
Fuel Capacity
12.8 Litres / 3.4 US gal
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Full 2020 BMW C 400X Specifications
Year
2020
Colours
Alpine White, Zenith Blue Metallic, Black Storm Metallic
Make Model
BMW C 400X
Seat Height
775 mm / 30.5 in
Wheelbase
1564.5 mm / 61.6 in.
Height
1305 mm / 51.4 in.
Length
2210 mm / 87 in
Seat Height (Inner Leg Curve)
1760 mm / 69.3 in
Width
833 mm / 32.8 in
Dry Weight
193 kg / 425.5 lbs
Fuel Capacity
12.8 Litres / 3.4 US gal
Wet Weight
204 kg / 450 lbs
Fuel Control
Overhead Cams (OHC)
Engine Type
Single cylinder, four-stroke
CO2
81.2 CO2 g/km. (CO2 - Carbon dioxide emission)
Displacement
350 cc / 21.3 cu-in
Engine Detail
Four stroke, single cylinder, SOHC, 4 Valves, with rocker arm
Fuel System
Injection
Bore x Stroke
80 x 69.6 mm
Compression Ratio
11.5:1
Cooling System
Liquid cooled
Emissions
Closed-loop 3-way catalytic converter, emission standard EU-4
Engine Lubrication
Wet sump
Exhaust
Stainless Steel
Fuel Consumption
3.50 litres/100 km (28.6 km/l or 67.21 mpg)
Fuel Induction
Fuel injection, BMS-E2 40mm throttle valve diameter
Fuel Reserve
4.00 litres / 1.06 US gallons
Fuel Type
Regular lead free (95 RON)
Ignition
BMS-E2 digital engine management
Starter
Electric, 500 kW
Valve System
4
Battery Capacity
12/9 V/Ah
Clutch
Centrifugal clutch
Final Drive
Gear reduction cog wheel pairing
Gearbox
Automatic
Primary Drive
Chain drive in oil bath
Transmission / Drive
Continuously variable CVT belt transmission
Frame Type
Tubular spaceframe
Suspension - Front
35mm Telescopic forks.
Suspension - Rear
Aluminum double-sided swing arm, double spring strut, adjustable spring preload
Rake
26.4°
Trail
81.2 mm / 3.2 in
Wheel Travel - Front
110 mm / 4.3 in
Wheel Travel - Rear
112 mm / 4.4 in
Alternator
316W
Lighting system
LED headlights
Brakes - Front
2x 265mm Rigid discs 4 piston caliper
Brakes - Rear
Single 265mm disc 1 piston caliper
ABS
BMW Motorrad ABS
Rims
Cast aluminum
Rims - Front
3.50 x 15
Rims - Rear
4.25 x 14
Tyres - Front
120/70 ZR15
Tyres - Rear
150/70 ZR14
Wheels
Die-cast aluminum wheels
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