The more air resistance a car has, the more fuel it needs. The more aerodynamic a car is, the less air resistance it has. Even the smallest changes in the aerodynamics of a car can have a big impact on its long-term efficiency.
TYRE ROLLING RESISTANCE
When you drive, rolling resistance works to reduce your efficiency through tyre deformation. That’s why it’s important to design tyres to be as efficient as possible.
Heavy things require more energy to move. So, the lighter the car, the less fuel it uses to move. By using less fuel, the car is more efficient. Lightness simply equals efficiency, and it’s also useful at improving car handling.
WLTP IMPROVEMENTS: THE FACTS
It’s all about accuracy and relevance. The same test applies to lots of different ways, all around the world. It’s one of the biggest changes ever in the car industry.
DIFFERENCES BETWEEN NEDC AND WLTP