The 2025 Mercedes-Benz AMG A 45 S is powered by the formidable M139 2.0-litre four-cylinder turbocharged petrol engine, renowned as the world's most powerful series-production four-cylinder. This engine is expected to produce an astounding 421 PS of power at 6,750 rpm and a massive 500 Nm of torque between 5,000-5,250 rpm. It is paired with a quick-shifting AMG SPEEDSHIFT DCT 8G 8-speed dual-clutch automatic transmission. Power is sent to all four wheels via the AMG Performance 4MATIC+ all-wheel-drive system, which includes AMG Torque Control for fully variable torque distribution between the rear wheels.

In real-life driving, the A 45 S delivers explosive performance. It can accelerate from 0 to 100 kmph in a mere 3.9 seconds, a figure that rivals many supercars. The engine's response is immediate, with a strong surge of power across the rev range. Overtaking is effortless, and the exhaust note, especially in Sport+ mode, adds to the thrilling experience. Fuel economy is not its primary focus, but it typically returns around 10-12 kmpl in mixed driving conditions, which is reasonable for its power output. The engine's high-strung nature means it thrives on being revved, making every drive an event.

Ride and Handling

The 2025 Mercedes-Benz AMG A 45 S is engineered for dynamic handling and a focused driving experience. It features an AMG RIDE CONTROL suspension with adaptive damping, allowing the driver to select various modes from comfort to sport-plus, altering the damping characteristics. While the ride is inherently firm, especially in sportier modes, it manages to absorb most road imperfections adequately for a performance car. On smooth surfaces, the ride is composed and flat.

Handling is exceptionally sharp and precise. The AMG Performance 4MATIC+ all-wheel-drive system, combined with AMG Torque Control, provides immense grip and allows for precise power delivery to individual wheels, enhancing agility and stability. The steering is direct and offers excellent feedback, making the A 45 S highly engaging on winding roads. Panic or emergency braking performance is outstanding, thanks to the large, high-performance braking system, providing strong and consistent stopping power. High-speed stability is impressive, and the car feels planted and confident even at its top speeds. The optional AMG DYNAMIC PLUS package further enhances handling with features like a drift mode and larger brakes.

The interior of the 2025 Mercedes-Benz AMG A 45 S blends sporty aesthetics with modern luxury, consistent with the 2024 model. The cabin features AMG-specific elements such as highly bolstered AMG Performance seats (optional), a flat-bottom steering wheel wrapped in Nappa leather/DINAMICA microfibre, and red contrast stitching throughout. Materials include high-quality ARTICO man-made leather, DINAMICA microfibre, and aluminium or carbon-fibre trim inserts.

Seating is for five occupants, though the rear seats are best suited for two adults on shorter journeys due to limited legroom and headroom compared to larger sedans. Cargo space is practical for a hatchback, with a boot capacity of approximately 370 litres, expandable by folding the rear seats. Fit and finish are excellent, with a premium feel throughout. Features like dual-zone automatic climate control, ambient lighting with 64 colours, and a panoramic sunroof (optional) enhance the cabin experience. The overall design is driver-focused, with easy access to controls and a blend of digital and tactile interfaces.

Infotainment

The 2025 Mercedes-Benz AMG A 45 S features the advanced MBUX (Mercedes-Benz User Experience) infotainment system, presented across dual high-resolution screens. This setup includes a 10.25-inch digital instrument cluster and a matching 10.25-inch central touchscreen infotainment display, visually integrated into a single widescreen unit. The MBUX system is highly responsive and intuitive, supporting touch input, steering wheel controls, a central touchpad, and advanced voice commands activated by "Hey Mercedes."

AMG-specific displays are integrated into the MBUX system, offering performance data such as G-force meter, engine data, and lap timers. The system supports wireless Apple CarPlay and Android Auto, integrated navigation with augmented reality, and a suite of Mercedes me connect services. A premium Burmester surround sound system is available as an option, delivering exceptional audio quality. The system also supports over-the-air (OTA) updates, ensuring the software remains current with the latest features and improvements. The emphasis is on providing comprehensive performance data alongside seamless connectivity and entertainment.

The exterior design of the 2025 Mercedes-Benz AMG A 45 S is overtly aggressive, signaling its high-performance credentials. It retains the striking AMG-specific Panamericana grille with vertical slats, flanked by sharp LED headlights that feature a distinct daytime running light signature. The front bumper is sculpted with larger air intakes and aerodynamic flics, optimising airflow and enhancing its menacing stance. The bonnet features power domes, further hinting at the potent engine beneath.

From the side, the A 45 S boasts flared wheel arches accommodating larger, bespoke AMG alloy wheels, typically 19-inch, with prominent red brake calipers. Aerodynamic side skirts and a low-slung profile contribute to its sporty appearance. The rear is dominated by a large, fixed AMG rear wing (standard or optional depending on market/package), quad exhaust tailpipes, and a redesigned rear diffuser, all contributing to both aesthetics and downforce. Dimensions are expected to be similar to the 2024 model, approximately 4,436 mm in length, 1,850 mm in width (excluding mirrors), and 1,400 mm in height, with a wheelbase of 2,729 mm. Standard colour options are complemented by a range of metallic and designo paints, allowing for personalisation.

Safety in the 2025 Mercedes-Benz AMG A 45 S is comprehensive, combining robust passive safety with a suite of advanced active systems. The Mercedes-Benz A-Class platform, on which the A 45 S is based, has received a 5-star safety rating from Euro NCAP, indicating excellent occupant protection. The high-strength steel construction and rigid body shell provide a strong safety cell.

Standard passive safety features include multiple airbags (expected to be 7 or more, covering front, side, curtain, and a knee airbag), ABS with EBD, Electronic Stability Program (ESP), and Traction Control. A wide array of advanced driver-assistance systems (ADAS) is expected to be standard or optional, including Active Brake Assist, Active Lane Keeping Assist, Blind Spot Assist, Adaptive Cruise Control (DISTRONIC PLUS), and a 360-degree camera with parking assist. The PRE-SAFE® system also prepares occupants for an impending collision. The vehicle's dynamic capabilities and advanced safety systems work in tandem to provide a high level of confidence and protection across various driving conditions, from spirited track driving to daily commutes.

The 2025 Mercedes-Benz AMG A 45 S occupies a unique position in the Indian market, facing limited direct competition in the ultra-high-performance hot hatchback segment. Its primary rivals are often found in the compact performance sedan or coupe categories. Key competitors include:

The Audi RS 3 Sportback/Sedan (if available) is a natural rival, offering a potent five-cylinder engine and quattro all-wheel drive, known for its distinctive engine note and strong acceleration. The RS 3 often provides a slightly more comfortable ride while still delivering formidable performance.

The BMW M2 (though a coupe) can be considered a competitor for its pure driver engagement, offering a rear-wheel-drive focused dynamic and a powerful inline-six engine. It appeals to a similar performance-oriented buyer, albeit in a different body style.

While not a direct hatchback, the Porsche 718 Cayman (entry-level variants) might be cross-shopped by buyers looking for a pure sports car experience in a similar price bracket, prioritising driving dynamics over practicality.

The AMG A 45 S differentiates itself with its class-leading four-cylinder engine power, advanced all-wheel-drive system with torque vectoring, and the raw, unadulterated performance it delivers in a compact hatchback form factor. Its ability to offer both daily usability and track-day capability makes it a compelling choice. For sheer power from a compact engine and aggressive styling, the A 45 S often stands out as the overall best performer in its niche, offering immense value for money for the serious enthusiast.

The 2025 Mercedes-Benz AMG A 45 S remains an engineering marvel and a thrilling proposition for performance enthusiasts in India. It successfully combines the practicality of a compact hatchback with the raw power and dynamic capabilities of a much larger sports car. Its record-breaking engine, sophisticated all-wheel-drive system, and track-honed chassis deliver an exhilarating driving experience that is unmatched in its segment.

For the Indian buyer who prioritises uncompromised performance, aggressive styling, and the prestige of the AMG badge, the 2025 AMG A 45 S is an exceptional choice. While its firm ride and premium price point may not appeal to everyone, for those who seek a compact car that can genuinely thrill on both public roads and the racetrack, it offers undeniable value and a unique proposition. It is the ultimate hot hatchback for those who demand extreme performance without sacrificing a degree of everyday usability.