Free mechanical aptitude tests are available on Aptitude-Test.com and JobTestPrep.co.uk, as of 2015. Both websites feature tests that visitors take online. Results are provided at the end of the tests. JobTestPrep.co.uk also features mechanical aptitude test practice.
Take an online mechanical aptitude test on Aptitude-Test.com by clicking Mechanical Aptitude Test on the home page, selecting a test on the next page and then clicking Begin. Tests are timed.
Find free mechanical aptitude tests on JobTestPrep.co.uk by clicking Aptitude Tests under the Choose Your Test heading and then clicking Mechanical Reasoning. To take a free test, click Continue under Free Sample Test. The next page also displays a link to view practice questions.