How many miles per gallon does a Honda Monkey 125 get?

The Honda Monkey 125 is rated at roughly 156 miles per gallon (US) under Honda’s internal test procedures, while most owners and road tests report real-world fuel economy in the 100–130 mpg (US) range. In practice, your exact mileage will vary with speed, rider weight, terrain, and modifications.

Official fuel-economy rating

Honda’s published specification for the Monkey 125 (model years 2019–2025 in most markets) lists an estimated fuel economy of about 156 mpg (US). This figure reflects controlled testing and ideal conditions rather than typical mixed riding. Converted, that’s roughly 1.5 L/100 km or about 187–190 mpg (UK).

What the factory number means

Motorcycle fuel-economy claims are not EPA-certified in the U.S., and manufacturers may use different procedures. The Monkey’s factory estimate is useful as an upper bound: it’s achievable at steady, moderate speeds with a light throttle, but everyday results are usually lower.

Real-world mileage

Independent reviews and rider reports commonly land between 100 and 130 mpg (US) in mixed city and suburban riding, with occasional highway stints pulling the average down. Spirited riding, hills, headwinds, and added cargo can push results closer to 90–100 mpg; gentle commuting on slower roads can exceed 130 mpg.

What affects your mpg on a Monkey 125

The following points outline the main factors that typically influence fuel economy on the Honda Monkey 125.

• Speed and aerodynamics: Sustained speeds above ~45–50 mph increase aerodynamic drag sharply, reducing mpg.
• Throttle habits: Smooth inputs and early upshifts help the 125cc single sip fuel; frequent wide-open throttle lowers mpg.
• Terrain and load: Hills, headwinds, passenger/cargo weight, and knobbier tires all add consumption.
• Maintenance: Proper tire pressure, clean air filter, and fresh oil preserve efficiency.
• Modifications: Intake/exhaust changes or different sprockets can alter fueling and engine load, impacting mpg.
• Fuel quality and weather: Colder temps and lower-quality fuel can modestly reduce efficiency.

Accounting for these variables explains why rider-to-rider results differ, even on identical routes.

Range and tank capacity

The Monkey 125’s tank holds about 1.5 gallons (5.6 liters). Using Honda’s estimate, theoretical range approaches 230–240 miles (370–385 km). Using realistic mixed-riding figures (100–130 mpg), a practical range of roughly 150–195 miles (240–315 km) between fill-ups is typical, with a comfortable buffer.

How to get closer to the advertised mpg

If you want to maximize fuel economy on your Monkey 125, the following practices can help.

1. Keep speeds moderate and steady; avoid long runs at wide-open throttle.
2. Shift early and ride smoothly to keep the engine in its efficient range.
3. Maintain correct tire pressures and perform regular service.
4. Travel light and streamline luggage to reduce drag and weight.
5. Use quality fuel and avoid unnecessary idling or repeated short trips.

While these steps can’t eliminate all variables, they typically move real-world results closer to the factory rating.

Summary

A Honda Monkey 125 is officially rated around 156 mpg (US), but most riders can expect about 100–130 mpg in everyday use. With a 1.5-gallon tank, that translates to roughly 150–195 miles of practical range per fill, depending on speed, conditions, and riding style.

What is the gas mileage on a Honda Monkey 125?

162.6 MPG – *Honda’s fuel economy estimates are based on EPA exhaust emission measurement test procedures and are intended for comparison purposes only.

What is the top speed of the Honda Monkey 125cc?

The stock Honda Monkey 125 typically has a top speed in the range of 55-60 mph, though factors like rider weight, wind, terrain, and the specific model year (with or without a fifth gear) can influence this. While a 2024 5-speed model reached about 60 mph on a flat surface, experienced riders have achieved speeds up to 65-70 mph on downhill slopes or with tailwinds, and even higher with modifications.
 
Factors Affecting Top Speed

• Rider Weight and Size: A heavier rider will experience a lower top speed due to increased drag and engine strain. 
• Terrain: Riding on a downhill slope will result in a higher top speed than riding on a flat surface or uphill. 
• Wind Conditions: A tailwind can boost your speed, while a headwind will reduce it. 
• Model Year: Newer models with a fifth gear offer more flexibility for cruising at lower RPMs, but the top speed itself isn’t significantly different from a four-speed model. 
• Modifications: Aftermarket parts like high-flow intakes, exhausts, and smaller front sprockets can increase the bike’s top speed. 

What to Expect

• On a flat surface: A stock Monkey 125 will likely achieve around 55-60 mph. 
• With favorable conditions: With a strong tailwind and a downhill slope, speeds of 65-70 mph are possible. 
• For Highway Use: The Monkey is best for short trips on highways, rather than long stretches or high-speed environments. 

In Summary
The Honda Monkey 125 is a fun mini-bike for slow-speed riding and short highway trips, but it’s not designed for high-speed performance. While it can reach around 60 mph in ideal conditions, it performs best at lower speeds where its lightweight and agile nature can be fully appreciated.

How far can a Honda Monkey go on a tank of gas?

The manufacturer has snatched its first Guinness World Record Record for the greatest distance ridden on a single tank of fuel by a gas-powered motorcycle. The total distance covered? An impressive 4,183.8 kilometers (2,599.7 miles) without refueling.

How many miles per gallon does a Honda 125 get?

Up to 125cc motorcycles (A1 licence) – Honda CB125F | 138.7mpg. Although it can’t quite match the economy of its CBF125 predecessor or live up to Honda’s claims of 150mpg, Honda’s latest CB, as introduced in 2021 with an even more efficient engine, is still the class-leader in terms of fuel efficiency.