Is Volvo's 48V Mild Hybrid BSG or ISG?

[LeCamille]

Volvo's 48V mild hybrid is ISG. Taking the 2021 Volvo XC90 as an example, it belongs to the mid-to-large SUV category with body dimensions of: length 4953mm, width 1958mm, height 1776mm, and a wheelbase of 2984mm. The curb weight is 2015kg. The 2021 Volvo XC90 features a double-wishbone independent front suspension and a multi-link independent rear suspension. It is equipped with a 2.0L turbocharged engine, delivering a maximum horsepower of 250PS, a maximum power of 184kW, and a maximum torque of 350Nm, paired with an 8-speed automatic transmission.

[LaAna]

I've previously driven several Volvo models, especially those equipped with 48V mild hybrid systems, all of which use ISG technology. ISG stands for Integrated Starter Generator, mounted between the engine and transmission to directly assist power delivery, making starts and stop-starts smoother and quieter. BSG differs as it drives the generator via a belt, commonly found in older mild hybrid vehicles, potentially increasing engine load. Volvo chose ISG for its energy efficiency and superior brake energy recovery, significantly saving fuel costs in daily driving. Additionally, this system boasts high reliability with minimal maintenance needs—just get the electrical circuits checked at authorized service centers if issues arise, no DIY fixes. If you've test-driven one, you'd notice quicker acceleration response and seamless stop-starts even in winter, overall enhancing daily driving convenience with ISG.