Instructions
Inspect the size of the car. The two major generations of Aurora slot cars are Thunderjets and AFX. The Thunderjet is a 1:32 scale car, while the AFX is a 1:64 scale.
Examine the car for an American Flag emblem on the door. This variation of the Thunderjet will identify it as an A-Jet. These American-made cars were manufactured between 1965 and 1971.
Look at the rear wheels. In addition to the larger body size, the AFX models have a modification where the rear wheels are wider than the body of the car. This allows for improved performance, at the expense of the physical accuracy of the car. AFX stands for Aurora Factory Experimental. These cars have several different features from their predecessor. Increasing the size of the car allowed for more visual detail.
Check the placement of the magnets at the bottom of the car on the AFX model. A variation of the AFX called the AFX Magna-Traction featured magnets closer to the tracks. If the magnets on the car are concealed within the body, the car is probably the original AFX. If the magnets protrude, it is probably the AFX Magna-Traction.
Examine the height of the car. In the Aurora AFX G+ style, the motor was redesigned. In previous cars, the motor was situated vertically. In the G+, the motor was mounted horizontally, allowing for better contact with the track magnets. The G+ is a wider, flatter version of the car.