2018 Mercedes-Benz A-class (W177) Dimensions, Size & Specs

The curb weight of the W177 A-class ranges from 1275 kg to 1605 kg (2811 to 3539 pounds), depending on engine variant, drivetrain, and optional equipment. The maximum authorized weight falls between 1860 kg and 2155 kg (4101 to 4750 pounds). This range makes the car relatively lightweight for its class, supporting responsive handling and better fuel efficiency without compromising structural integrity or safety. Various trims and configurations influence these weights, with sportier and more equipped variants naturally weighting toward the higher end.

The standard luggage capacity of the A-class W177 varies between 310 and 370 liters (approximately 10.9 to 13.1 cubic feet). When the rear seats are folded down, this expands significantly from 370 liters up to 1210 liters (13.1 up to 42.7 cubic feet), providing considerable flexibility for carrying larger loads or bulky items. This adaptability makes the W177 practical for everyday usage, grocery runs, and longer trips where additional cargo space is beneficial.

With a length between 4419 mm and 4445 mm (174.1 to 175 inches) and width including mirrors of 1992 mm (78.4 inches), the W177 typically fits comfortably in standard residential garages, which usually measure about 2400 mm to 2700 mm (94.5 to 106 inches) in width and 5400 mm to 6000 mm (212.6 to 236 inches) in length. However, the overall width with mirrors extended requires cautious parking, especially in tighter spaces. The compact height, ranging from 1405 mm to 1452 mm (55.3 to 57.2 inches), poses no issues with garage clearance.

The ride height or ground clearance of the W177 varies between 81 mm and 104 mm (3.2 to 4.1 inches), depending on suspension setup and trim level. This relatively low clearance aligns with the car's sporty hatchback design, enhancing aerodynamic efficiency and road handling by lowering the center of gravity. While beneficial for dynamic driving and stability, it can be less suited for very rough terrain or high speed bumps, so drivers should exercise caution over obstacles that require higher clearance.

The W177 is compatible with a variety of rim sizes including 8J x 18, 8.5J x 18, 8.5J x 19, 6.5J x 17, 6.5J x 16, 7.5J x 18, and 7.5J x 19 inches. Corresponding tire sizes range from 205/60 R16 and 205/55 R17 to sportier options like 235/40 R18, 245/40 R18, 245/35 R19, and 225/40 R19. This variety gives buyers options to prioritize comfort, fuel economy, or sporty handling according to their preferences and driving conditions.

The W177 generation is slightly larger than its predecessor, the W176 A-class, which measured about 4359 mm (171.6 inches) in length and was narrower in width. The increase in length (up to 4445 mm) and width enhances interior space and cargo capacity notably. The W177 also introduced a more modern, sleeker design and technological upgrades that complemented this dimensional growth, resulting in improved passenger comfort, greater rear legroom, and more practical luggage space compared to the W176.

The W177 sits competitively among premium compact hatchbacks like the Audi A3 and BMW 1 Series. In terms of size, its length (up to 4445 mm) is slightly longer than rivals, while its width with mirrors is comparable or slightly wider. The luggage capacity, especially with rear seats down (up to 1210 liters), excels over some competitors. Additionally, Mercedes tends to offer more advanced infotainment systems and luxury features in the W177, making it a well-rounded choice between space, comfort, and premium technology in the compact premium hatchback segment.

The roof load capacity of the W177 Mercedes-Benz A-class is 75 kg (165 lbs). This rating allows the vehicle to safely carry roof boxes, bike racks, or other cargo on a roof rack system without compromising vehicle stability or safety. For owners who require additional cargo capacity beyond the hatchback's internal volume, utilizing the roof load capacity significantly improves the car's versatility for trips, sports equipment transport, or bulky luggage.

The Mercedes-Benz A-class W177, produced from 2018 to 2022, represents a modern compact hatchback emphasizing luxury, advanced technology, and efficient performance. It introduced the MBUX infotainment system with advanced voice control, large touchscreen interfaces, and digital instrument clusters. The model lineup includes multiple turbocharged petrol and diesel engines, with some variants featuring 4MATIC all-wheel drive. Safety systems such as active brake assist and lane-keeping assist are standard or available, enhancing driver confidence. Its premium interior materials, spacious cabin, and versatile cargo options make it a compelling choice in the compact premium category.