What is the engine model of the Mercedes-Benz A45?

[IsabelDella]

Mercedes-Benz A45 uses the engine with the code name M133. Boost pressure value: The engine used in the Mercedes-Benz A45 AMG is different from the ordinary Mercedes-Benz 2.0T engine. The M133 engine has reached a boost pressure of 1.8Bar, which is nearly double the boost coefficient of 0.8~1.0Bar for some engines that lean towards economy and comfort; the large boost turbo value enhances the power data. Compression ratio: Due to the limited displacement of the Mercedes M133 engine, in order to cope with the turbo boost pressure of 1.8Bar, the engine needs to output higher pressure exhaust gas to drive the turbine blades.

[VanTimothy]

I absolutely adore the Mercedes-Benz A45. Its engine model is the M139, a 2.0-liter four-cylinder turbocharged powerhouse that delivers over 400 horsepower. Driving it feels incredibly fierce, with acceleration like a beast. I still remember my first time behind the wheel of the A45—the intense G-forces made my heart race. The performance tuning is just right for daily driving, striking a perfect balance between firmness and comfort. Commuting to work is a breeze, overtaking other cars effortlessly. Maintenance-wise, high-revving engines like this require premium oil and regular filter changes to prevent excessive wear. Overall, the A45's hot hatch persona paired with this engine is a dream come true. Every time I take it out, it turns heads and is worth every penny.

[OEmiliano]

As someone who has driven the Mercedes-Benz A45, I find its M139 engine model very reliable, with strong horsepower yet stable handling. During daily commutes, the throttle response is quick, and high-speed overtaking feels solid. For maintenance, it's recommended to check the turbo system every 5,000 kilometers to avoid overheating issues. The fuel consumption isn't too high, around 9-10 liters in city driving. When I drove other brands before, I often encountered insufficient power, but the A45's M139 engine performs better when climbing hills or on long-distance drives. Another reason for choosing it is the deep and pleasant sound, which isn't annoying even when idling at a red light. Overall, it has good balance, making it suitable for someone like me who values practicality but doesn't want to sacrifice driving pleasure.

[JuliaFitz]

The engine model of the Mercedes-Benz A45 is the M139. This 2.0-liter turbocharged engine is designed to be compact and efficient, delivering over 400 horsepower. Technical highlights include a twin-scroll turbocharging system, which enhances fuel efficiency. When driving, the engine responds quickly to rpm changes, providing smooth acceleration without any hesitation. Additional points include that the high-performance variant in the same series, such as the A45 S, offers even greater horsepower and simpler maintenance.