The Yamaha Aerox 155 has always been a sporty and stylish scooter that gives both power and comfort. Who want performance, style, and technology in one package. Now in 2025, Yamaha has made it even better with the launch of the new Aerox 155 S. This new model comes with cool new colour options, a Smart-Key system (so you don’t need to use a normal key), and follows the latest OBD-2 rules for checking engine health. Yamaha has also added some new features that make this scooter more attractive.
What’s New in the 2025 Aerox 155 S?
The 2025 Aerox 155 S comes with updates in both looks and features to match today’s rider needs. It now has new colour choices, better technology, and improved safety features. With these upgrades, Yamaha wants to make the scooter feel more premium and ready for the future.
New Colour Options
One of the first things you’ll notice in the 2025 Aerox 155 S is its eye-catching new colours. These new colours give the Aerox a fresh, sporty, and more exciting look than ever before:
Racing Blue (with updated graphics) – Inspired by Yamaha’s MotoGP racing bikes, giving it a sporty feel.
Metallic Black – A clean and classy look, great for daily use.
Grey Vermillion – A modern mix of grey with bright red wheels, perfect for those who like a bold style.
Silver with Neon Green Accents – A fun and energetic look that’s perfect for young riders.
Smart-Key System (Keyless Convenience)
The 2025 Aerox 155 S finally introduces the much-awaited Smart Key System. This feature lets you start the scooter without inserting a physical key. It’s more secure, convenient, and gives a premium experience.
Key Benefits of Smart Key:
- Keyless ignition – Just keep the key fob in your pocket.
- Answer-back function – Press a button on the fob, and your scooter makes a sound and flashes lights, helping you find it easily in a parking lot.
- Better security – Reduces chances of key duplication or theft.
This feature is especially useful in urban commuting, where quick access and ease of use matter.
Key Specifications
Here’s a quick list of key specs for the 2025 Aerox 155 S:
Engine: 155cc, liquid-cooled, 4-stroke, SOHC
Max Power: 15 PS @ 8000 rpm
Max Torque: 13.9 Nm @ 6500 rpm
Transmission: V-Belt automatic (CVT)
Fuel System: Fuel Injection
Front Suspension: Telescopic fork
Rear Suspension: Unit swing
Tyres: Tubeless (14-inch front & rear)
Fuel Tank: 5.5 litres
Underseat Storage: 24.5 litres (enough for a full-face helmet)
OBD-2B Compliance: Future-Ready Tech
One major update is the inclusion of OBD-2B (On-Board Diagnostics – 2nd Generation), which is now mandatory under Indian regulations from April 2025.
What is OBD-2B?
It’s a system that monitors your engine and emissions in real-time. If something goes wrong—like a sensor failure or emission issue—it immediately alerts the rider through the console.
Benefits:
- Eco-friendly – Keeps emissions under control.
- Engine health tracking – Reduces long-term maintenance issues.
- Legal compliance – Keeps you future-proof with government norms.
VVA Technology: Smooth Power Delivery
One of the best things about the Aerox 155 S is the VVA (Variable Valve Actuation) technology. This is the same smart engine tech used in Yamaha’s popular R15 bikes, and it helps the scooter deliver both strong performance and good fuel mileage.
Why VVA Matters:
Better pick-up at low speeds – Gives you more pulling power in traffic and helps in quick take-offs.
More power at high speeds – Makes highway rides faster and smoother without putting stress on the engine.
Saves fuel – Adjusts valve timing smartly, so the engine runs more efficiently and uses less petrol.
Braking & Safety
Safety remains a priority with the 2025 model. The Aerox 155 S features:
- Front Disc Brake with ABS (Anti-lock Braking System) – Prevents wheel lock during sudden braking.
- Rear Drum Brake – Offers stable rear-end support.
- Wide Tyres (Front 110/80, Rear 140/70) – Better grip and stability.
- LED Headlights and Tail Lamps – Sharp visibility in all conditions.
With these safety upgrades, you can confidently ride through city traffic and tough roads.
Conclusion
The 2025 Yamaha Aerox 155 S is more than just a scooter—it’s a lifestyle upgrade. With smart new features like the Smart Key system, VVA engine technology, OBD-2 compliance, and a fresh range of stylish colours, it really stands out from the crowd. Whether you’re riding through city traffic or heading out for weekend fun, the new Aerox is more ready than ever. It comes at a price of around ₹1.50 lakh (ex-showroom), which is quite reasonable considering all the features it offers. So, if you’re looking for a feature-packed, sporty scooter that combines performance, looks, and daily comfort, the 2025 Aerox 155 S is definitely worth buying.