In most situations, the Honda Grom is faster than the Navi, delivering a higher top speed and quicker acceleration, though real-world results depend on rider weight, road conditions, and model year.
Honda's Grom is a 125cc street bike with a manual four-speed gearbox, while the Navi is a smaller 109cc machine with an automatic CVT. The power gap and differences in gearing typically give the Grom the edge for top speed, especially on highways. In city riding the Navi can feel punchier off the line thanks to its seamless CVT, but it generally won't reach the same peak speeds as the Grom. The following overview breaks down the numbers and context that influence speed performance.
Performance snapshot
Model-year and regional variations
Speed and spec figures can vary by year, market, and aftermarket modifications. The numbers below reflect common configurations in many regions as of the mid-2020s.
Below is a concise comparison of the core performance figures that most affect speed and acceleration.
- Engine displacement: Grom 125cc; Navi 109cc.
- Transmission: Grom manual 4-speed; Navi automatic CVT.
- Peak power potential: Grom generally higher; Navi lower.
- Estimated top speed (stock): Grom ~65 mph (105 km/h); Navi ~60 mph (97 km/h).
- Weight considerations: Both are light, with Grom often perceived as lighter; exact weights vary by year.
These numbers illustrate the general layout: more peak power and a gear-filled transmission give the Grom an edge in top speed, while the Navi's CVT favors effortless urban acceleration.
Real-world speed and riding context
Real-world results depend on rider weight, wind, terrain, and how aggressively the rider uses the engine and gears. The following reflects typical experiences from riders and tests in urban and highway conditions.
- Urban acceleration: Navi's CVT can feel quicker off the line for stop-and-go traffic; Grom gains momentum more steadily with its four gears as speed builds.
- Highway capability: Grom generally maintains higher sustained speeds and smoother highway performance; Navi tends to top out earlier in stock form.
- Rider and conditions: Heavier riders or headwinds reduce the top speed on both; gearing and maintenance can alter real-world outputs, especially on the Navi.
In practice, the Grom usually edges the Navi for maximum speed and highway reliability, while the Navi can feel quicker and more comfortable in city commutes thanks to its automatic transmission.
Verdict: which is faster?
For outright top speed and highway capability, the Honda Grom is typically the faster machine, reaching higher speeds and sustaining them more comfortably. The Navi, while quicker to accelerate from a stop in some city scenarios because of its CVT, generally trades top-end performance for easy, stress-free urban riding. Your choice depends on where you ride most: highway-friendly performance favors the Grom; city commuting with auto-gear simplicity favors the Navi.
Summary
The speed comparison between the Honda Grom and Navi centers on engine size, transmission type, and intended riding conditions. The Grom wins on top speed and highway use, while the Navi offers easier city driving with its CVT. Riders should consider their typical routes and comfort with manual shifting when choosing between the two.