Danger ahead: why weight-based CO2 standards will make cars dirtier and less safe

In this briefing, T&E explains that using vehicle weight as the attribute to base car CO₂ standards on has serious negative consequences for safety, emissions and costs. Weight-based CO₂ standards in America have led to weight increases of 13 to 28 per cent. And contrary to the conventional wisdom, Japanese weight-based fuel economy standards failed to break the trend towards heavier vehicles.