What does the Jiaji mild hybrid system mean?

[LucyFitz]

Jiaji mild hybrid system refers to the installation of a BSG (Belt-Driven Starter Generator) mild hybrid system on the original vehicle. The equipped 48V battery is automatically collected by the vehicle's energy recovery system without the need for charging. Taking the 2021 Jiaji as an example, its body dimensions are: length 4706mm, width 1909mm, height 1690mm, with a wheelbase of 2805mm, minimum ground clearance of 165mm, fuel tank capacity of 52 liters, and curb weight of 1520kg. The 2021 Jiaji features a MacPherson strut independent front suspension and a torsion beam non-independent rear suspension. It is powered by a 1.5L turbocharged engine with a maximum horsepower of 177PS, maximum power of 130kW, maximum torque of 255Nm, paired with a 6-speed manual transmission.

[MorganLee]

The Jiaji mild hybrid system is essentially adding a small assistant to a conventional gasoline car. Having driven this type of vehicle myself, the most noticeable difference is the exceptionally smooth acceleration—none of the jerky movements you'd typically experience with traditional cars. That small electric motor kicks in the moment you press the accelerator, making the driving experience completely different from a pure gasoline vehicle. The difference is even more pronounced in stop-and-go traffic, where the usual jerkiness is significantly reduced, and you can save a liter or two in fuel consumption. However, unlike plug-in hybrids that can drive dozens of kilometers on pure electric power, this system primarily relies on the engine for long-distance travel. Maintenance is pretty much the same as a regular car, and the battery generally lasts five to eight years without issues, which is quite hassle-free.

[JocelynDella]

I've studied Geely's mild hybrid system, which centers around a 48V motor and lithium battery pack. When you brake to slow down, the system converts wasted kinetic energy into electricity for storage. At traffic light starts, the motor uses this stored energy to give you an extra push. This design is particularly suitable for urban commuting. In my tests on routes averaging 30km/h, fuel consumption was about 15% lower than the pure gasoline version. The battery is hidden under the trunk without occupying space, so the rear seats remain just as spacious. Even when running air conditioning in summer, the motor shares the compressor load, avoiding the noticeable power drain typical in older vehicles.

[Roger]

I pondered whether mild hybrids were worth it before buying, and after driving for over a year, I feel it's quite cost-effective. Although it's about ten thousand yuan more expensive than a gasoline car, the fuel savings pay off in three years. My car consumes just over seven liters per hundred kilometers in the city and is even more efficient on highways. Once, during a suburban trip with four hours of continuous driving, the displayed fuel consumption was only 6.3 liters. The electric motor starts up very quietly, so I don't wake the neighbors when leaving early in the morning. Maintenance costs are basically the same as a regular car, just requiring extra checks on the electrical system during each service. If there's a downside, it might be that the acceleration isn't as strong as plug-in hybrids, but it's definitely sufficient for daily commuting.