The 398cc liquid-cooled DOHC single-cylinder engine produces 40 PS at 8000 rpm and 37.5 Nm at 6500 rpm, delivering a broad torque spread that ensures strong pull from low revs for easy overtakes and city agility. Advanced fuel injection and electronic throttle control provide crisp, predictable response, while the balanced crankshaft optimizes inertia for smooth low-speed operation. The six-speed gearbox offers light, precise shifts and enables relaxed cruising with comfortable top-end performance beyond 145 kmph. A rich exhaust note and minimal vibrations suit both calm commuting and spirited riding, while real-world mileage of around 30 kmpl keeps the performance engaging without being demanding.

Safety is comprehensive, with Bosch dual-channel ABS and switchable traction control providing secure braking and traction on varied or slippery surfaces. Braking hardware includes a 300 mm front disc with a radial caliper and a 230 mm rear disc for confident, progressive stopping power. The tubular steel hybrid frame with a bolt-on rear subframe offers excellent rigidity, complemented by 43 mm upside-down front forks and a preload-adjustable rear monoshock for composed ride quality. Full LED lighting ensures strong visibility, while an immobiliser adds security. Tubeless radial tires and balanced weight distribution further enhance low-speed control and rider confidence, creating a reassuring yet dynamic package.

The Speed 400 rivals the Royal Enfield Guerrilla 450, which offers larger displacement and liquid cooling for stronger outright punch in a similar roadster format. The Harley-Davidson X440 focuses on relaxed riding with bold cruiser-inspired styling and strong low-end torque. Triumph’s own Scrambler 400 X adds adventure-oriented elements with increased ground clearance for mixed-terrain use. The Yezdi Roadster delivers retro charm with urban-friendly agility. Each alternative differs in engine character, ergonomics, and styling, allowing riders to choose based on preferred dynamics, refinement, or brand heritage within the modern classic segment.

Practicality is thoughtfully addressed in the Speed 400, with a 13-liter fuel tank providing usable range and a well-shaped seat offering comfort for solo riding and occasional pillion use. Key features include a hybrid instrument cluster with an analogue speedometer and digital inset displaying gear position, fuel level, and trip data. Ride-by-wire throttle enables switchable traction control for adaptable grip across conditions. Braided brake lines and a radial front caliper enhance braking feel, while over 25 genuine accessories, including heated grips, panniers, and flyscreens, allow extensive customization. USB charging keeps devices powered, and the torque-assist clutch reduces fatigue in traffic. Long 16,000 km service intervals and competitive running costs further strengthen its appeal as a premium yet practical everyday motorcycle.