Quick Analysis
Bajaj Dominar 400
21.5 pts
Unweighted: 16 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
YAMAHA Aerox 155 Version S
6.0 pts
Unweighted: 2 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
| Specification | ||
|---|---|---|
Engine Specifications |
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| Cooling System | Liquid‑cooled | Liquid-cooled |
| Displacement | 349.13 cc | 155 CC |
| Engine Type | Single cylinder, DOHC, 4‑valve, Fuel Injected | Liquid cooled, 4-stroke, SOHC, 4-valve |
| Power | 40.6 PS @ 9000 rpm | 11.0kW(15.0PS)/8000r/min |
| Torque | 33.2 Nm @ 7500 rpm | 13.9N.m(1.4kgf.m)/6500r/min |
Performance & Efficiency |
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| Fuel Tank Capacity | 13 L | 5.5 L |
| Mileage | — | 45 Kmpl |
Dimensions & Weight |
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| Kerb Weight | 190 | 126 |
| Seat Height | 800 | 790 |
Brakes & Suspension |
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| ABS | Dual‑channel ABS | Single Channel ABS |
| Front Brake | Disc (320 mm) with dual-channel ABS | Disc Brake(230mm) with ABS |
| Front Suspension | Telescopic, 43 mm USD Fork, Wheel Travel - 135 mm | Telescopic fork |
| Rear Brake | Disc (230 mm) with dual-channel ABS | Drum(130mm) |
| Rear Suspension | Multi-step Adjustable Mono Shock with Nitrox, Wheel Travel - 110 mm | Unit swing |
Tyres & Wheels |
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| Front Tyre | 110/70‑17 tubeless | 110/80-14M/C 53P |
| Rear Tyre | 150/60‑17 tubeless | 140/70-14M/C 62P |
| Tyre Type | Tubeless | Tubeless |
| Wheel Type | Alloy | Alloy |
Features & Technology |
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| Headlight | Full‑LED with Auto Headlamp On (AHO) | LED (Class D) |
Other Specifications |
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| Battery | 12 V, 8 Ah VRLA | 12 V, 6.0 Ah |
| Bike Image 1 | https://motoautiv.com/wp-content/uploads/2025/07/D400-Green.avif | https://motoautiv.com/wp-content/uploads/2025/05/Racing-Blue-2.avif |
| Cluster | Bonded digital LCD with turn‑by‑turn navigation | Digital |
| Color Options | Aurora Green | #4A5D23 Charcoal Black | #232323 | Racing Blue | #0047AB Ice Fluo Vermillion | #F5F5F5, #FF5A36 |
| Cons | Heavy Kerb Weight – The motorcycle remains noticeably heavier than many rivals, especially during parking manoeuvres, low-speed riding, and congested city traffic. Heat Felt in Slow Traffic – The larger liquid-cooled engine can generate noticeable heat around the rider's legs during prolonged stop-and-go conditions. Fuel Efficiency Lower Than Smaller Motorcycles – Compared to 250cc and commuter-oriented motorcycles, fuel consumption is relatively higher, particularly during aggressive riding. Less Agile in Urban Conditions – While highly stable on highways, the motorcycle can feel less nimble than lighter street bikes in tight traffic situations. 13-Litre Fuel Tank Could Be Larger for Touring – Riders covering long highway distances may prefer a larger fuel tank to reduce the frequency of refuelling stops. Weight May Challenge New Riders – The motorcycle's size, power output, and kerb weight can take time to get used to for inexperienced riders. Premium Maintenance Costs – Tyres, brake components, and routine servicing generally cost more than those of smaller-capacity motorcycles. Advanced Electronics Still Limited – Some competitors now offer ride-by-wire throttles, TFT displays, multiple riding modes, and traction control systems that are absent on the Dominar 400. Suspension Setup Prioritizes Stability Over Agility – The motorcycle focuses more on highway comfort and stability than sharp cornering responsiveness. | Stiff suspension - This is probably the most common complaint. Riders often mention that potholes and broken roads are felt more sharply compared to scooters like the Activa or Jupiter. Large turning radius - Because of its sporty geometry and longer wheelbase, maneuvering in tight spaces and U-turns can require extra effort. Limited footboard practicality - Unlike conventional scooters, the Aerox has a central tunnel. Owners who regularly carry grocery bags or larger items on the floorboard find this inconvenient. Rear seat comfort - While the rider seat is generally comfortable, some pillion riders complain that the rear seat is a bit high and firm for long journeys. Higher maintenance costs - Compared to a typical 110cc or 125cc scooter, service costs and spare parts can be slightly more expensive due to the liquid-cooled engine and premium components. |
| Detailed Overview | Long highway stretches are where the Bajaj Dominar 400 feels most at home. Unlike motorcycles that focus primarily on urban commuting or outright sport riding, the Dominar 400 is built around the idea of covering distance while maintaining comfort and stability. Its substantial dimensions, muscular fuel tank, upright riding posture, and touring-oriented equipment create a motorcycle that is equally capable of handling daily travel and extended weekend rides. At the heart of the motorcycle is a 349cc single-cylinder, liquid-cooled DOHC engine that produces around 40 PS of power and 33.2 Nm of torque. Paired with a six-speed gearbox, the engine delivers performance across a broad rev range, allowing riders to accelerate confidently, maintain highway cruising speeds, and overtake slower traffic without frequent downshifts. The liquid-cooling system helps regulate engine temperatures during demanding riding conditions, while fuel injection contributes to smooth throttle response and consistent power delivery. The motorcycle’s overall design reflects its touring-focused nature. A compact windscreen sits above the LED headlamp, helping reduce wind pressure on the rider during highway travel. The sculpted fuel tank, split-seat arrangement, and exposed perimeter frame give the motorcycle a muscular appearance, while LED lighting throughout the motorcycle adds a modern touch. The bodywork remains functional rather than overly aggressive, prioritizing rider comfort and practicality over track-inspired styling. Supporting the engine is a perimeter frame chassis combined with upside-down front forks and a rear monoshock suspension system. This setup is designed to provide stability at higher speeds while maintaining comfort across varying road conditions. Whether travelling on smooth highways or encountering uneven road surfaces, the suspension works to absorb impacts and maintain composure. The motorcycle’s relatively long wheelbase further contributes to its planted feel during long-distance riding. Stopping power comes from disc brakes at both ends, assisted by dual-channel ABS. The braking system is intended to provide controlled deceleration while reducing the chances of wheel lock-up under hard braking conditions. An assist-and-slipper clutch is also included, helping reduce clutch effort in everyday riding and improving stability during rapid downshifts. Technology and convenience features form another important part of the package. The digital instrument cluster displays essential riding information, including speed, fuel level, trip readings, gear position, and navigation-related data. Bluetooth connectivity allows integration with compatible smartphones for call alerts, message notifications, and turn-by-turn navigation. These features are aimed at riders who spend extended periods on the road and require easy access to travel information. Comfort remains central to the riding experience. A wide handlebar, upright seating position, and spacious seat help reduce fatigue during longer journeys. The 800 mm seat height accommodates a broad range of riders, while the 13-litre fuel tank provides a practical riding range between fuel stops. Together, these elements create a motorcycle that combines touring capability, modern technology, and everyday usability within the premium sports tourer segment. | The Yamaha Aerox 155 Version S is a maxi-scooter that combines the convenience of an automatic scooter with engineering elements typically found in Yamaha’s performance-oriented motorcycles. Its design follows a sporty and aerodynamic approach, featuring a sharp front apron, centrally mounted LED headlamp, muscular body panels, and a stepped seat layout. The overall proportions are noticeably larger than those of conventional scooters, giving it a distinctive road presence while also accommodating a sizeable under-seat storage compartment. Powering the Aerox 155 Version S is a 155cc, single-cylinder, liquid-cooled, fuel-injected engine that produces approximately 15 PS of power and 13.9 Nm of torque. The engine incorporates Yamaha’s Variable Valve Actuation (VVA) technology, which adjusts valve timing to help maintain performance across different engine speeds. Unlike smaller commuter scooters that prioritize low-speed operation, the Aerox’s engine is designed to deliver a broader powerband, allowing it to handle city riding as well as sustained highway speeds. Power is transmitted through a CVT automatic gearbox, eliminating the need for manual gear changes and making operation straightforward in varying traffic conditions. The scooter is built around an underbone frame that contributes to structural rigidity and handling stability. Suspension duties are managed by telescopic front forks and twin shock absorbers at the rear. This setup is intended to balance everyday usability with responsive handling characteristics. The Aerox rides on 14-inch alloy wheels at both ends, which are larger than those found on many scooters in the segment. The larger wheel size can influence stability and road feedback, particularly at higher speeds. Braking performance is handled by a front disc brake and a rear drum brake. The scooter is equipped with a single-channel Anti-lock Braking System (ABS) for the front wheel, helping reduce the likelihood of wheel lock-up during sudden braking situations. The Version S variant also features Traction Control System (TCS), a technology that monitors wheel slip and adjusts power delivery when necessary to maintain traction on low-grip surfaces. In terms of features, the Aerox 155 Version S includes a fully digital LCD instrument console that displays information such as speed, fuel level, trip data, and other riding information. Bluetooth connectivity through Yamaha’s Y-Connect application enables smartphone integration, allowing riders to access call alerts, message notifications, maintenance reminders, and fuel consumption data. The Smart Key system offered on the Version S variant introduces keyless operation, enabling ignition control and scooter access without physically inserting a key. The fuel tank capacity stands at 5.5 litres, while the kerb weight is approximately 126 kg. The seat height of 790 mm and wheelbase of 1,350 mm contribute to the scooter’s riding ergonomics and stability. Storage practicality is supported by a large under-seat compartment that can accommodate daily essentials and certain helmet types depending on their size and shape. Additional equipment includes LED lighting throughout, an automatic start-stop system designed to reduce fuel consumption during idle periods, and a side-stand engine cut-off feature. Together, these specifications position the Yamaha Aerox 155 Version S as a feature-rich scooter that blends modern technology, performance-focused engineering, and everyday commuting functionality within a single package. |
| Expert Review | Built around an updated 349cc single-cylinder, liquid-cooled DOHC engine, the Bajaj Dominar 400 continues to focus on long-distance touring capability while balancing everyday usability. The engine delivers strong mid-range performance and relaxed highway cruising characteristics, supported by a 6-speed gearbox and assist-and-slipper clutch. Its perimeter frame, upside-down front forks, and well-balanced chassis contribute to stable high-speed behaviour, while the upright riding position and spacious seating arrangement enhance rider comfort during extended journeys. Touring-oriented elements such as the windshield, wide handlebar, and luggage compatibility further reinforce its highway-focused nature. Modern features including LED lighting, Bluetooth connectivity, navigation support, and digital instrumentation add practicality for daily riding and touring alike. The motorcycle's heavier kerb weight improves stability at speed but can feel noticeable during low-speed manoeuvres and dense traffic conditions. Overall, the Dominar 400 combines strong touring ability, refined performance, premium hardware, and everyday practicality within the sports tourer motorcycle segment., 4.5, MotoAutiv Team | The Yamaha Aerox 155 Version S occupies a unique space in the Indian scooter market by combining the practicality of a scooter with performance characteristics that are more commonly associated with entry-level motorcycles. Its 155cc liquid-cooled engine delivers strong acceleration throughout the rev range, while the rigid chassis and larger wheels contribute to confident handling at both city and highway speeds. The riding position feels sporty yet relaxed enough for daily commuting, though the firm suspension setup tends to transmit road imperfections more noticeably on rough surfaces. Features such as traction control, Smart Key technology, and Bluetooth connectivity add to the modern appeal, while the maxi-scooter design provides a distinct road presence. However, the focus on performance and styling does bring certain compromises in everyday practicality, particularly when compared to conventional family-oriented scooters. The Aerox ultimately presents a different approach to scooter design, emphasizing riding dynamics and high-speed composure alongside everyday usability., 4.4, MotoAutiv Team |
| FAQ (Manual Override) | Q: What is the engine capacity of the Bajaj Dominar 400? A: The latest Dominar 400 is powered by a 349cc single-cylinder, liquid-cooled, DOHC engine paired with a 6-speed gearbox. Q: Is the Bajaj Dominar 400 suitable for touring? A: Yes. The motorcycle is designed with touring in mind and offers comfortable ergonomics, stable highway manners, a windshield, and support for touring accessories. Q: What mileage does the Dominar 400 deliver? A: Most owners can expect a real-world fuel efficiency of approximately 28–35 kmpl, depending on riding style, speed, and road conditions. Q: What is the fuel tank capacity of the Dominar 400? A: The motorcycle comes with a 13-litre fuel tank. Q: Does the Dominar 400 have dual-channel ABS? A: Yes. Dual-channel ABS is offered as standard equipment. Q: What is the seat height of the Bajaj Dominar 400? A: The seat height is approximately 800 mm, making it accessible to a wide range of riders. Q: Does the Dominar 400 have Bluetooth connectivity and navigation? A: Yes. Recent versions include Bluetooth connectivity and turn-by-turn navigation through the digital instrument console. Q: What is the top speed of the Dominar 400? A: Under suitable conditions, the motorcycle can achieve approximately 150–160 km/h, depending on rider weight, weather, and road conditions. Q: Is the Dominar 400 comfortable for long highway rides? A: Yes. The upright riding position, spacious seat, windscreen, and stable chassis make it suitable for covering long distances. Q: Does the Dominar 400 have a slipper clutch? A: Yes. An assist-and-slipper clutch is provided to reduce clutch effort and improve stability during downshifts. Q: Is the Dominar 400 beginner-friendly? A: Riders with some experience can adapt to it comfortably, but its weight and performance may require a learning period for complete beginners. Q: How does the Dominar 400 differ from the Dominar 250? A: The Dominar 400 offers a larger and more powerful engine, stronger acceleration, and enhanced highway performance, while sharing a similar touring-focused design philosophy. Q: What type of motorcycle is the Bajaj Dominar 400? A: It is classified as a sports tourer motorcycle, combining long-distance comfort, highway stability, and everyday usability. Q: Are spare parts and service support easily available? A: Yes. Bajaj's widespread dealership and service network across India generally ensures convenient maintenance and spare parts availability. Q: Does the Dominar 400 support luggage and touring accessories? A: Yes. The motorcycle is commonly fitted with saddle stays, top racks, luggage carriers, tank bags, and other touring accessories, making it suitable for long-distance travel. | Q: What is the real-world mileage of the Yamaha Aerox 155 Version S? A: Most Yamaha Aerox 155 Version S owners report a real-world fuel efficiency of around 38-45 km/l, depending on riding style, traffic conditions, and maintenance. Q: Is the Yamaha Aerox 155 Version S suitable for long rides? A: Yes, the Yamaha Aerox 155 Version S is considered one of the better scooters for highway touring due to its powerful engine, stable chassis, and comfortable cruising ability. Q: What is the top speed of the Yamaha Aerox 155 Version S? A: The Yamaha Aerox 155 Version S can achieve a top speed of approximately 115-120 km/h under favorable riding conditions. Q: Does the Yamaha Aerox 155 Version S have traction control? A: Yes, the Yamaha Aerox 155 Version S comes equipped with Traction Control System (TCS), which helps improve grip during acceleration on slippery surfaces. Q: Can a full-face helmet fit inside the Yamaha Aerox 155 Version S under-seat storage? A: The Yamaha Aerox 155 Version S offers a large under-seat storage compartment, but whether a full-face helmet fits depends on the helmet's size and shell design. Q: Is the Yamaha Aerox 155 Version S comfortable for a pillion rider? A: The Yamaha Aerox 155 Version S provides adequate pillion space, though some users feel the elevated rear seat and firm suspension can affect comfort on longer journeys. Q: Does the Yamaha Aerox 155 Version S have keyless ignition? A: Yes, the Version S variant of the Yamaha Aerox 155 comes with a Smart Key system that enables keyless ignition and additional convenience features. Q: What are the service costs of the Yamaha Aerox 155 Version S? A: Yamaha Aerox 155 Version S service costs are generally higher than those of typical 125cc scooters because of its liquid-cooled engine and premium components. Q: Is the Yamaha Aerox 155 Version S good for daily commuting? A: Yes, the Yamaha Aerox 155 Version S can be used for daily commuting, although its sporty setup and central tunnel make it slightly less practical than traditional family scooters. |
| Fuel System | Fuel Injection | Fuel Injection |
| Price Variants | STD | 203214 | | 146120 |
| Pros | Strong Touring Performance – The updated 349cc liquid-cooled engine delivers strong acceleration and highway cruising ability, making long-distance riding more effortless. Improved Mid-Range Power Delivery – The engine offers better tractability and stronger mid-range performance, helping with overtakes and relaxed highway riding. Excellent Highway Stability – The motorcycle feels planted at higher speeds due to its weight, chassis setup, and long wheelbase, contributing to rider confidence during touring. Comfortable Riding Ergonomics – The upright seating posture, wide handlebars, and spacious seat help reduce fatigue on extended rides. Premium Touring-Oriented Hardware – Upside-down front forks, perimeter frame, dual-channel ABS, assist and slipper clutch, and LED lighting contribute to the motorcycle's equipment package. Refined Engine Character – The liquid-cooled DOHC engine delivers smoother power delivery and better refinement across varying riding conditions. Touring-Friendly Design – The windshield, luggage mounting capability, and stable chassis make the motorcycle suitable for highway travel and touring accessories. Feature-Rich Instrumentation – Bluetooth connectivity, navigation support, digital consoles, and ride information displays add convenience for touring and everyday riding. Good High-Speed Cruising Comfort – The engine remains relaxed at cruising speeds, helping riders cover long distances with less strain. | Powerful and exciting performance - The 155cc liquid-cooled engine borrowed from the Yamaha R15 is the biggest highlight. Owners frequently mention that the Aerox feels significantly quicker than traditional scooters, especially during overtakes and highway riding. Excellent highway capability - Unlike most scooters that feel stressed at higher speeds, the Aerox can comfortably cruise at 80–100 km/h. Many users appreciate its stability on long rides. Sporty handling - The motorcycle-like frame and larger wheels give the scooter a planted feel around corners. Riders often say it feels more like a lightweight bike than a conventional scooter. Good fuel efficiency for the performance - Most owners report real-world mileage between 38–45 km/l depending on riding style, which is considered respectable for a 155cc performance scooter. Premium styling - The aggressive maxi-scooter design attracts a lot of attention. Many buyers choose the Aerox simply because it looks different from every other scooter on the road. Feature-rich Version S - The Smart Key system, answer-back function, automatic start-stop system, Bluetooth connectivity, and traction control add a premium touch that owners appreciate. |
| Starter | Electric | Electric starter |
| Transmission | 6‑speed manual (with slipper clutch) | Automatic |
