Why Your 2025 Ducati Multistrada V4 S Is Using More Fuel Than It Should
Shop parts for a 2025 Ducati Multistrada V4 S Motorcycle.
The 2025 Multistrada V4 S is a liquid-cooled, fuel-injected, four-stroke V4 with chain final drive and a fully electronic ignition system. That configuration matters a great deal when you start hunting for a fuel economy problem, because the usual suspects on a modern, sensor-driven machine are different from those on an older carbureted bike. There is no choke to leave on, no float bowl to stick, and no jets to gum up. Instead, you are looking at airflow, sensor feedback, mechanical drag, and how the bike is being ridden and loaded.
Start by Confirming the Drop Is Real
Before assuming something is wrong, measure it properly. Fill the tank to a consistent level, note the odometer reading or reset a trip meter, ride normally, then refill at the same pump to the same level and divide the distance covered by the fuel added. A single tank proves very little, because temperature, wind, and traffic can swing the result noticeably. Track it across several fill-ups before you draw conclusions.
It is also worth checking whether the number you are comparing against is actually comparable. A change in rear tire size or profile alters the rolling circumference, which skews the odometer and makes economy look worse than it is. On this bike the speedometer is driven by wheel speed sensors, so a sprocket change will not throw the odometer off the way it would on an older cable-driven machine — but gearing changes still affect real-world consumption. If you recently reset the average consumption readout on the display, or disconnected the battery, the figure you are looking at may simply be starting fresh.
Riding Conditions and Habits That Quietly Cost Fuel
Cold weather is one of the most common culprits. A cold engine needs a richer mixture, and short winter rides that never let the bike reach full operating temperature keep it in that enriched state. Winter-blend and ethanol-blended fuels also return slightly less energy per volume, so a seasonal dip in economy is normal rather than a fault.
Your right hand and your route matter just as much. Sustained highway speeds push a tall, wide adventure-touring machine through a lot of air, and headwinds multiply that effect. Adding a passenger, loaded panniers, or a top case increases weight and drag together. Aggressive throttle use, hard acceleration out of corners, and long idling warm-ups all burn fuel without covering distance. Ride mode selection plays a role too: Sport sharpens throttle response and holds gears longer, while the softer modes smooth things out. The V4 engine deactivates its rear cylinders when the bike is stationary, which helps in heavy traffic, but extended idling still consumes fuel.
Rolling Resistance, Brakes, and the Drive Chain
Tire pressure is the cheapest thing to check and one of the most common causes of a gradual economy decline. Underinflated tires increase rolling resistance and heat, so verify pressures cold and adjust for load. Next, check for a dragging brake. After a ride, carefully feel the front discs and the rear disc; a disc that is noticeably hotter than the others points to a sticking caliper piston or a lever or pedal that is not fully releasing.
Because this bike is chain-driven, the chain deserves attention. A dry, rusty, or overtightened chain absorbs power that should be reaching the rear wheel. Check slack against specification, keep it lubricated, and make sure the rear wheel is aligned. A chain that is too tight also loads the countershaft bearing and interferes with suspension action.
Air Filter and Spark Plugs
A clogged air filter restricts incoming air and forces the engine to work harder for the same output, which shows up as reduced economy. This is especially likely if you ride in dusty conditions or have fitted a reusable performance filter and let it go too long between cleanings.
Spark plugs that are worn, fouled, or gapped incorrectly cause incomplete combustion, wasting fuel and often producing a slightly rough idle. A weak ignition coil can cause the same symptom on one cylinder without setting an obvious fault. Note that this bike uses a fully electronic ignition, so there are no contact points to wear or timing to drift — if ignition is the problem, it is almost always plugs or coils rather than adjustment.
Fuel Injection, Sensors, and Stored Faults
This Multistrada relies on closed-loop fuel injection with oxygen sensors in the exhaust. A contaminated or lazy oxygen sensor can bias the mixture rich, and because the system is constantly correcting, the symptom may be a slow economy decline rather than a dramatic failure. An engine coolant temperature sensor that reports the engine as colder than it actually is will also push the ECU toward enrichment, effectively keeping the bike in a warm-up state.
Dirty or leaking injectors deliver uneven fuel, and on a multi-cylinder engine like this one, throttle bodies that have drifted out of synchronization can hurt both smoothness and efficiency. Stored fault codes are worth checking even if no warning light is showing, since a dealer can read history that the dash never displayed. Finally, look for actual fuel leaks: a persistent fuel smell, staining around fittings or the tank area, or a cap that does not seal properly all waste fuel and are worth addressing immediately.
Engine Condition and Cooling
Low compression from general wear reduces efficiency across the board, and on a desmodromic V4, valve clearances that have drifted out of specification are a realistic contributor. Tight or worn valve clearances affect sealing and breathing, so if the bike is due for a valve service, that is a genuine factor in fuel consumption.
Because this engine is liquid-cooled, a thermostat stuck open is also worth considering. It prevents the engine from reaching full operating temperature, which keeps the fuel mixture enriched longer than intended and shows up as poor economy, particularly on shorter rides.
Modifications and Tuning
An aftermarket exhaust or high-flow air filter installed without matching calibration is a classic cause of rich running. The engine breathes differently, but the fueling map has not been adjusted to suit, so the bike burns more fuel than it needs to. The same applies to a flashed or altered ECU calibration that was not developed for your exact combination of parts. Gearing changes count here too: a larger rear sprocket raises engine speed at any given road speed, which increases consumption even though the odometer stays accurate.
When It Is Time to Hand It to a Mechanic
Some symptoms point clearly toward a deeper problem. A strong, persistent fuel smell, black smoke from the exhaust, spark plugs that come out sooty, a warning light on the dash, or rough running alongside the mileage drop all justify professional diagnosis rather than more guessing. The same is true if you have checked tire pressures, brakes, chain condition, air filter, and plugs, and the bike is still using noticeably more fuel than it used to. At that point, a technician with the right diagnostic tools can read stored codes, watch live sensor data, and confirm whether the issue is fueling, ignition, or mechanical — and you will be able to describe exactly what you have already ruled out.
Related Shopping Categories
Shop Fuel System Parts for a 2025 Ducati Multistrada V4 S Motorcycle.
Shop Air Filters for a 2025 Ducati Multistrada V4 S Motorcycle.
Shop Tires for a 2025 Ducati Multistrada V4 S Motorcycle.
Shop Brake Parts for a 2025 Ducati Multistrada V4 S Motorcycle.
Shop Spark Plugs for a 2025 Ducati Multistrada V4 S Motorcycle.
Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.
