The popularity of various engine designs typically fades over time as technological advances provide more power, better fuel economy, or both. Flathead designs gave way to overhead valves, and inline ...

Today's 4-cylinder cars offer a better combination of performance and efficiency than ever before. Although the engines themselves continue to get smaller in displacement, they're able to make more ...

Toyota Motor North America said Tuesday it will invest $383 million across four plants in the United States to prepare for what appears to be a new four-cylinder engine variant for traditional and ...