The Mazda3 is available in Hong Kong in two body styles: the 4-door Mazda3 Sedan and the 5-door Mazda3 Fastback. Both feature Mazda's "Kodo" design language with sleek, sporty lines.

The Mazda3 in Hong Kong is mainly available with two engine options. The entry-level is a 1.5-litre Skyactiv-G four-cylinder naturally aspirated engine producing 120 hp and 153 Nm of torque. There is also a 2.0-litre Skyactiv-G version producing 165 hp and 21.7 kgm of torque for those seeking more power.

Very fuel-efficient. The Mazda3 1.5 has an official combined fuel consumption of 17.0 km/L, with real-world city driving around 13-15 km/L and highway driving reaching 18-20 km/L. The 2.0 version has a combined fuel consumption of approximately 16.1 km/L, also impressive. For a daily commuter, the Mazda3's fuel efficiency is excellent.

The Mazda3 Sedan measures 4,660 mm in length, 1,795 mm in width, and 1,440 mm in height, with a wheelbase of 2,725 mm. Rear passenger legroom and headroom are adequate, with a boot capacity of approximately 374 litres. The Mazda3 Fastback has a shorter body, but the rear seats can be folded flat to expand cargo capacity.

The Mazda3 features a 10.25-inch Mazda Connect touchscreen infotainment system with wireless Apple CarPlay and Android Auto support. Higher-spec versions also include a 12-speaker Bose premium sound system, head-up display, wireless charging pad, and dual-zone climate control. The cabin also features a sunroof and power-adjustable driver's seat with memory function.

The Mazda3 is equipped with the i-Activsense active safety system. Features include Adaptive Cruise Control (ACC), Lane Keep Assist (LKAS), Blind Spot Monitoring (BSM), Smart City Brake Support (SCBS), and a 360-degree camera. The vehicle comes standard with 7 airbags for comprehensive passive safety protection.

The Mazda3 is renowned for its driving dynamics, featuring G-Vectoring Control Plus (GVC+) technology that automatically adjusts engine output during cornering for smoother and more precise steering. The suspension is tuned towards a sporty feel with clear road feedback – among the best in its class for handling, delivering "Jinba Ittai" driving pleasure.

The Mazda3 Sedan is a traditional 4-door saloon with a larger boot, suitable for users who need to carry large luggage. The Mazda3 Fastback is a 5-door hatchback design with a shorter body, sportier looks, and more agile parking and U-turn capability. The mechanical specifications are identical between the two versions, so buyers can choose according to their preference.

The Mazda3's main rivals in Hong Kong include the Toyota Corolla and Honda Civic. Compared to its rivals, the Mazda3's advantages are its excellent handling and stylish design. However, the Mazda3 has slightly smaller rear seat space than the Civic, and slightly higher fuel consumption than the Corolla Hybrid – buyers can choose based on their priorities.

The Mazda3's 4.6-metre length makes it agile for driving and parking in Hong Kong. The 1.5-litre engine is fuel-efficient and responsive, with approximately 17 km/L fuel consumption – very economical. The cabin is well-equipped with Apple CarPlay and the i-Activsense safety system. Whether as a first car for new drivers or daily commuting for small families, the Mazda3 is an excellent choice.