There are several websites where you can learn about car engine specification and differences: 1. Car and Driver: This website offers detailed information about different car engines and specifications. 2. MotorTrend: This website has a dedicated section to car engines, including detailed information about horsepower, torque, fuel efficiency, and other essential features. 3. CarGurus: This website contains resources about various car engines, such as the engine type, power output, fuel economy, and technical specifications. 4. Edmunds: This website provides expert reviews and ratings on different car models, with detailed information on engine specifications. 5. Kelley Blue Book: This resource offers information on car engines, including horsepower, torque, displacement, and other essential features. 6. Carfax: This website provides a detailed history of a specific car by using its vehicle identification number (VIN), including information about the engine-based specification.