The Mercedes-Benz A-Class (W177) is the fourth and current generation of the A-Class range of subcompact executive hatchbacks and sedans. It was launched in 2018 as the successor to the W176 A-Class, with sales commencing in March 2018.^[8] The available body styles include:

• 5-door hatchback (W177 model code)^[9]
• 4-door sedan (V177 model code)^[10]
• 4-door long wheelbase sedan (Z177, only sold in China)^[11]

The W177 A-Class hatchback officially debuted at the 2018 Geneva Motor Show.^[12] It is based on the front-wheel drive MFA2 (Modular Front Architecture) platform and features front MacPherson struts, and rear torsion beam suspension, though some models are equipped with multi-link rear suspension.^[13]

In mid-2020, the production of the North American-market A-Class sedan returned to Rastatt, Germany from the COMPAS plant in Aguascalientes, Mexico to increase the production capacity of the GLB.^[14]

The vehicle received a facelift for the 2023 model year.^[15]

• 2019 Mercedes-Benz A 180
• 2018 Mercedes-Benz A200 AMG Line
• 2018 Mercedes-Benz A200 AMG Line
• Interior

A 4-door sedan model was released in late 2018.^[16] The A-Class sedan is sold alongside the A-Class hatchback in Europe, while it marks the first time the A-Class is offered in North America but as a sedan only in the US and as both a hatchback and sedan in Canada,^[17][18] while in Mexico it's the first time the sedan is sold, as the hatchback has been marketed for the first and third generation before.

It is based on the Mercedes-Benz Concept A Sedan revealed at the 2017 Shanghai Motor Show and came in response to demand for a more practical alternative to the Mercedes-Benz CLA.^[19] A long-wheelbase sedan model (Z177) was also unveiled at the 2018 Auto China Show, featuring a 60 mm (2 in) longer wheelbase and is sold exclusively in China.^[20]

At its debut Daimler claimed it had the lowest aerodynamic drag of all production vehicles in the world, with a drag area below 0.49 m², depending on exact equipment, including aerodynamic wheel and tire combination, grille shutters, etc.

• 2019 Mercedes-Benz A220 4MATIC sedan
• 2019 Mercedes-Benz A220 4MATIC sedan
• 2019 Mercedes-Benz A220 AMG Line 4MATIC sedan
• 2019 Mercedes-Benz A220 AMG Line 4MATIC sedan
• 2019 Mercedes-Benz A200L (LWB sedan)
• 2019 Mercedes-Benz A200L (LWB sedan)

The W177 A-Class comes as standard with 16-inch alloy wheels, cruise control, keyless ignition, and LED daytime running lights.^[21]

All models feature the new Mercedes-Benz User Experience (MBUX) infotainment system with a redesigned touch interface and voice-controlled smart assistant that is activated by saying "Hey Mercedes".^[22] MBUX also contains what3words functionality as standard. It is also able to offer quick shortcuts to menus based on the past habits of the user.^[23] The system is also optionally available with an augmented reality navigation system that records and displays directional arrows on the road in the navigation system.^[24]

Standard models feature two 7-inch displays for the instrument cluster and MBUX screen, and can be upgraded to a 10.25-inch display with touchpad controls,^[25] real-time traffic information, and traffic sign recognition.^[26] Other available options include Apple CarPlay and Android Auto,^[27] ambient lighting, a head-up display,^[28] and the use of a smartphone to lock or unlock the car via NFC.^[29]

The A 35 4MATIC+ model was unveiled at the 2018 Paris Motor Show.^[30] It uses an all-wheel drive layout and has a 7-speed dual clutch AMG SpeedShift DCT transmission.^[31]

On 2 January 2019, the automobile insurance company, HUK24, accidentally revealed the information about new A 45 4MATIC+ and A 45 S 4MATIC+ AMG in its website.^[32] The engine is heavily revised M133 and renamed M139 with higher compression ratio (9.0:1 versus 8.6:1 for M133 engine) and a twin-scroll turbocharger situated behind the engine for better air flow management. There are two power levels: A 45 4MATIC+ with 285 kW (382 hp) and 480 N⋅m (354 lb⋅ft) and A 45 S 4MATIC+ with 310 kW (416 hp) and 500 N⋅m (369 lb⋅ft).^[33] At 416 hp (422 PS), the M139 engine fitted to A 45 S is the second most powerful series production four-cylinder engine with specific output of 208 hp (211 PS) per litre (or 104 hp per cylinder).^[34][35]

The Mercedes-Benz A35 arrived in North America as the 2020 model, though it was only available as a sedan variant in the US, while Canada and Mexico received both the hatchback and sedan models of the A35.^[36][37] In addition, Mexico also got the A45 4MATIC+ and A45 S 4MATIC+ hatchbacks.

• 2020 Mercedes-AMG A 35 4MATIC
• 2020 Mercedes-AMG A 35 4MATIC
• Mercedes-AMG A 45 S 4MATIC+
• Mercedes-AMG A 45 S 4MATIC+
• 2020 Mercedes-AMG A 35 4MATIC sedan
• 2020 Mercedes-AMG A 35 4MATIC sedan

The A-Class received a facelift, unveiled in late 2022 for the 2023 model year. Notable enhancements include updated headlights and taillights. While the engines remain unchanged, petrol models now incorporate a 48-volt mild hybrid system. Furthermore, the 2023 A-Class features a redesigned interior and an upgraded infotainment screen, housing the latest iteration of the Mercedes-Benz MBUX system. Finally, the manual transmission was retired, along with the other two remaining manual models (the B-Class and CLA).^[38]

• Sedan (facelift)
• Sedan (facelift)
• Hatchback (facelift)

The 2018 A-Class scored five stars overall in its Euro NCAP test.^[39]

More information Test, Points ...

Euro NCAP test results
Mercedes-Benz A180d, LHD (2018)

Test	Points	%
Overall:
Adult occupant:	36.5	96%
Child occupant:	45.0	91%
Pedestrian:	44.2	92%
Safety assist:	9.8	75%

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• 2018 AA Driven New Zealand 'Car of the Year'^[40]
• 2019 What Car? 'Safety Award'^[41]
• 2019 AutoTrader South African 'Car of the Year'^[42]
• 2019 CarBuyer 'Best Small Luxury Car'^[43]