
The official combined fuel consumption (L/100km) provided by BMW for the 425 model is 6-7.7L/100km. Maintaining a steady speed: When driving, it is necessary to control the vehicle speed properly and avoid sudden braking; Do not open windows during high-speed driving: When driving at higher speeds, opening windows will increase fuel consumption; Regularly check tire pressure to ensure it is correct: Insufficient or excessive tire pressure will increase fuel consumption, so it is necessary to check tire pressure periodically; Pay attention to transmission maintenance: Always use transmission oil that matches the vehicle specifications. Transmission oil not only lubricates but also transmits torque, so it should be replaced regularly.

I've test-driven several BMW 425 models, with official fuel consumption data typically ranging from 7 to 8 liters per 100 kilometers based on the NEDC test cycle. However, real-world driving shows significant fuel consumption fluctuations. For instance, during highway cruising, I can achieve around 6.5 liters, but in urban traffic congestion, it can spike to over 11 liters. Driving habits have a profound impact—frequent hard acceleration or braking can increase fuel consumption by nearly 15%. Additionally, using the automatic air conditioning, especially with the recirculation mode in summer, often adds an extra 0.5 to 1 liter. BMW's 2.0-liter turbocharged engine delivers strong performance, and while its fuel efficiency isn't the lowest, it's much better than older models. Regular maintenance, such as oil changes and air filter checks, is recommended to help stabilize average fuel consumption at around 9 liters.

I've been driving a BMW 425 as my family car for over three years, with an average fuel consumption of around 9 liters per 100 kilometers. During frequent city driving, especially in rush hour traffic jams, it easily spikes to 11-12 liters, while on highways it drops to just over 7 liters. In daily use, I've found that smoother acceleration and avoiding frequent lane changes save a lot of fuel. Using the automatic air conditioning mode increases consumption slightly - the impact is smaller in winter, but in summer it's better to combine it with window ventilation. Compared to my friend's Volkswagen, the 425's fuel efficiency is mid-range - not exceptionally economical but acceptable, with ample power that makes driving enjoyable.

The BMW 425 has an official fuel consumption baseline of 7-8 liters per 100 kilometers, but real-world usage often reaches 9-10 liters. The engine is a 2.0T turbocharged unit paired with an 8-speed automatic transmission, designed for efficiency. A significant factor affecting fuel economy is the driving mode, with Eco mode showing noticeable fuel savings. Road conditions like inclines or carrying a full load can increase consumption by 0.5 liters.


