To drive green, you should:

• A. Add weight
• B. Get rid of extra weight
• C. Increase weight by carrying cargo
• D. Change tires rarely

Answer: (B)

Reducing load makes the biggest difference for fuel efficiency. When a vehicle carries less weight, the engine has to push and accelerate less mass, which uses less fuel and produces fewer emissions. Extra weight also means more rolling resistance and, if you’re carrying items on the roof, more aerodynamic drag, both of which further raise fuel use. So getting rid of unnecessary cargo and keeping the car as light as practical is the simplest, most effective way to drive green.

Carrying additional weight or increasing load by cargo will raise fuel consumption and emissions, counteracting eco-friendly driving. Changing tires rarely isn’t directly about weight, and while tire maintenance matters for efficiency, it doesn’t counterbalance the fuel penalty of extra weight.