How has engine technology changed since 1967?

Since 1967, engine technology has advanced significantly with the introduction of fuel injection systems, turbocharging, and variable valve timing, which enhance efficiency and performance. The shift towards smaller, more efficient engines has been driven by stricter emissions regulations and fuel economy demands, leading to the development of hybrid and electric powertrains. Additionally, advancements in materials and computer-aided design have improved engine durability and precision. Overall, these innovations have resulted in cleaner, more efficient engines compared to their 1967 counterparts.