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What automotive technology advances have made cars less harmful to the environment?

Catalytic converters: Convert harmful pollutants in exhaust gases into less harmful substances.

Oxygen sensors: Regulate the air-fuel mixture in an engine to ensure complete combustion and reduce fuel waste.

Electronic fuel injection: Provides precise control over the amount of fuel delivered to the engine, leading to better fuel efficiency and reduced emissions.

Hybrid and electric vehicles: Offer alternative low-emissions or zero-emissions propulsion systems.

Diesel particulate filters: Capture and remove soot particles from diesel engine exhaust.

EGR (exhaust gas recirculation) systems: Direct a portion of exhaust gases back into the engine to reduce exhaust temperature and control oxide emissions.

Variable valve timing: Offers better control over the engine's air and fuel intake and exhaust processes, leading to enhanced efficiency and reduced emissions.

Turbochargers and superchargers: Allow engines to produce more power while reducing fuel consumption and emissions.

Lightweight materials: Used in vehicle construction help improve fuel efficiency and lower emissions as less energy is required to propel the vehicle.

Regenerative braking: Recovers energy during braking and utilizes it to power accessories or reduce the fuel consumed by the engine.