The main reason for the relatively weak power performance of hybrid vehicles at high speeds lies in the design trade-offs of their powertrain systems. To balance fuel economy and cost control, most hybrid models adopt a combination of small-displacement engines and low-peak-torque motors. In addition, after the hybrid vehicle's battery is depleted, the vehicle weight (usually 200-300 kilograms heavier than fuel-powered vehicles) will further increase the engine load, creating a "small horse pulling a large cart" effect. However, high-end hybrid models can alleviate this problem through high-power motors and efficient energy management systems (such as Toyota THS's power-split technology). For example, the Lexus NX 450h+ can accelerate from 0 to 100 km/h in 6.3 seconds, but the price of such models often exceeds 250,000 Malaysian Ringgit. After 2025, some new hybrid models have optimized the coordination strategy between motors and engines under high-speed operating conditions. For instance, BYD's DM-p system improves high-speed re-acceleration capability through a dual-motor layout.
