What is the difference between Volvo S60 T4 and B4 series?
2 Answers
Volvo S60 T4 and B4 series have the following differences: 1. Driving experience: Compared to the T4, the B4 series starts more smoothly. The 2022 models have also removed the auto start-stop switch button, so it cannot be manually turned off. During the vehicle starting process, the motor intervenes to bring the engine to the corresponding starting speed before the engine ignites, which almost eliminates the vibration feeling during startup and does not affect the driving experience. In this aspect, the B4 engine has more advantages. However, in rainy weather, especially on waterlogged roads, it is advisable for 2022 models to avoid wading to prevent the engine from stalling and needing to restart. 2. Fuel consumption: Compared to the T4, the B4 series has slightly lower fuel consumption, mainly due to the benefits of the auto start-stop function, but the difference is not significant, and the fuel consumption performance is basically the same. 3. Other aspects: There are not many other differences between the two engines, and their power parameters are almost identical. Whether it is the T-series or B-series engines, both are mature engines for Volvo models. As long as there are no major defects during use, they are both excellent engines.
Let me break it down technically. The Volvo S60 T4 uses a pure gasoline engine with an output around 197 horsepower, perfect for traditional combustion engine enthusiasts—direct power but higher fuel consumption. The B4 series upgrades to a mild hybrid system, adding a 48V electric system to the gasoline engine, boosting power to about 210 horsepower. The key difference is that the B4 can recover braking energy to charge the battery, making it smoother and quieter at low speeds while significantly reducing fuel consumption by 1-2 liters per 100 km! For daily driving, especially in city traffic, the B4 is much friendlier, with quicker starts thanks to electric motor assistance. However, the hybrid system adds complexity and comes at a higher price. If you prioritize performance and eco-friendliness, the B4 suits younger drivers better. Long-term, battery tech durability is generally reliable.
