Yes, Cars have computers and plenty of them. They have crept up on us over the past couple of decades and quietly assumed a central role in our daily commute. They are a need in our cars. All modern cars have ECU’s, also known as an engine control modules (ECM). These oversee various sensors found throughout the engine that is fuel, fuel temperature, exhaust, turbo pressure, water temperature, and timing among’st a multitude of others. Wheel sensors for the traction control and anti-skid brakes better known as ABS. Centrifugal sensors measuring both longitude and latitude movements of your car. In modern engines, sensors feed the ECU or ECM, PCM etc among’st others and feeds information to the computer. This in turn alters the fuel and air mixture. In the eventuality something goes wrong with the car the computer will record a fault code. Long before a light comes on the dashboard (the automotive industry calls that an MIL, or Malfunction Indicator Light) alerting us that something is wrong. Some of those problems are simple and will be taken care of next time you go in for a service. Others are not and, if unchecked, can damage or destroy the engine.