step  To run a principal components factor analysis, from the menus choose:

Analyze
  Data Reduction
   Factor...

step  Select Vehicle type through Fuel efficiency as analysis variables.

step  Click Extraction.

step  Select Scree plot.

step  Click Continue.

step  Click Rotation in the Factor Analysis dialog box.

step  Select Varimax in the Method group.

step  Click Continue.

step  Click Scores in the Factor Analysis dialog box.

step  Select Save as variables and Display factor score coefficient matrix.

step  Click Continue.

step  Click OK in the Factor Analysis dialog box.

These selections produce a solution using principal components extraction, which is then rotated for ease of interpretation. Components with eigenvalues greater than 1 are saved to the working file.