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AAMC MCAT Official Prep CARS Diagnostic Tool (Online) | 1-Year Subscription

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This section-specific diagnostic tool helps you identify areas of strengths and weaknesses as you prepare for the Critical Analysis and Reasoning Skills (CARS) section of the MCAT exam. This product is also included in the MCAT Official Prep Complete Bundle and MCAT Official Prep Online-Only Bundle.


You will have unlimited access to this MCAT Official Prep product for 365 days from date of purchase.


Compare all MCAT Official Prep products. 


AAMC MCAT Official Prep CARS Diagnostic Tool (Online) | 1-Year Subscription
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Created by the developers of the MCAT exam, the CARS Diagnostic Tool includes 28 passage sets with questions to help you improve your critical analysis and reasoning skills. This product allows you to:

  • Watch video walkthroughs of how to approach answering two example CARS passage sets.
  • View the answers and the test developers’ solutions right away or later.
  • Read explanations for all answer choices in addition to explanations for how each question assesses a critical analysis and reasoning skill.
  • Highlight content from the passages and questions, and review your highlighted content later using the built-in highlight tool.
  • Add and review flags and notes to your answered questions.
  • View score reports to help you evaluate your performance in each skill category.
  • Compare your performance on every attempt of the passage sets by comparing all your previous score reports. Each MCAT Official Prep product allows an unlimited number of attempts.
  • Review strategies to help you improve your critical analysis and reasoning skills.

Please note that the AAMC Fee Assistance Program includes free access to all MCAT Official Prep online products. Review eligibility requirements.       


All sales are final for AAMC MCAT Official Prep products. No refunds or exchanges will be issued.

If you plan to take a test preparation course, check with the course administrator before purchasing this product as access to MCAT Official Prep products may be included in your course.

This product is not available in alternative formats.

If you are interested in purchasing this product in bulk, you may qualify for discounted rates.

The AAMC MCAT Official Prep Hub Terms and Conditions apply to the purchase and use of this product. You will have unlimited access to this MCAT Official Prep product for 365 days from date of purchase. You are restricted from sharing access or the content of this product with any third party. This product is not intended for individual resale.

Access this MCAT Official Prep product immediately upon purchase at the AAMC MCAT Official Prep Hub. If you are purchasing on behalf of someone else, the recipient will receive an email with instructions on how to access their product.

The AAMC accepts Visa®, MasterCard®, American Express®, and Discover®.    


This product is accessible online using a device with secure access to the internet. Practice products are mobile optimized and accessible via browser on your mobile or tablet device. This product is fully functional using a browser on a mobile or tablet device although the experience may vary slightly to accommodate the smaller screen sizes.

Web browser requirements* (Windows & Mac):

  • Google Chrome (recommended browser) *
  • Safari*
  • Firefox*
  • Microsoft Edge

*The current version of the browser and up to two previous versions. 


If you have questions about the AAMC Store or your purchase, please contact the AAMC Store. Representatives typically respond within one business day.

Frequently Asked Questions


Are the passages and questions from the new CARS Diagnostic Tool the same as the passages and questions included in the CARS question packs?

The CARS Diagnostic includes passages and questions that are not included in previous products. The CARS Diagnostic Tool has 28 passages compared to 21 passages found in the CARS Question Pack Vol. 1 and 22 passages in the CARS Question Pack Vol. 2.


Can I purchase access for less than one year, or extend access from a previous purchase?

Products expire one year from purchase. We do not offer extensions, only subscriptions of one year of access. We also cannot pause subscriptions. The expiration dates for your products are displayed in the MCAT Official Prep Hub. If you purchase a product again, all previously completed activity including score reports, will still be available.


How do I access products?

Access online products at the MCAT Official Prep Hub:

1. Visit www.aamc.org/mcatprep.  

2. Click on the “MCAT Official Prep Hub” on the right side of the page.

3. Sign in using your AAMC username and password.


How can I tell if the MCAT Official Prep products currently sold are the same products I already purchased?

The MCAT Official Prep products available have not been changed since their publication. You will be able to identify when new MCAT Official Prep products are introduced because of the new title, detailed description or edition. 

Are these products the same products offered by test prep companies?

AAMC MCAT Official Prep products may be included in some test prep courses. Check with the course administrator before purchasing this product, as refunds and exchanges are not offered.

Do you offer any free products?

The AAMC MCAT Official Prep Sample Test is a free, full-length exam that does not provide a scaled score. It can be accessed through the MCAT Official Prep Hub in the Free Resources section. You can also check out our other free and study resources

Which MCAT Official Prep products should I purchase?

Review our comparison chart.


Other questions?

For more information about the MCAT Prep products, resources, and policies, visit our FAQs.