CARS overview

What is CARS?

The Critical Analysis and Reasoning Skills (CARS) section is one of the four sections of the MCAT. Unlike the science sections — which test knowledge of biology, chemistry, physics, and psychology — CARS tests your ability to read complex passages and reason about what you’ve read. There is no content to memorize, no equations to master, and no list of concepts to review the night before.

Instead, CARS asks a deceptively simple question: can you read carefully and think clearly under pressure?

The section consists of 53 questions across 9 passages, completed within 90 minutes. Every question is passage-based — there are no standalone questions without a corresponding text. Passages are typically 500–600 words long, but they are dense, intellectually demanding pieces of writing drawn from the humanities and social sciences.

CARS at a glance: 53 questions | 9 passages | 90 minutes | All passage-based

Passage content

CARS passages come from two broad categories — humanities and social sciences — each making up roughly half of the section.

These are not science passages. You will not be reading about cellular biology or reaction mechanisms. Instead, a passage might feature a philosopher arguing about the nature of consciousness, an art historian analyzing the symbolism in a Renaissance painting, a political scientist examining the roots of authoritarianism, or a sociologist tracing how language shapes cultural identity.

Humanities passages are drawn from disciplines including architecture, art, dance, ethics, literature, music, philosophy, popular culture, religion, theater, and studies of diverse cultures. They are often written in a conversational or opinionated style and tend to focus on relationships between ideas rather than presenting facts. The author’s tone, word choice, and perspective are all fair game for questions.

Social sciences passages come from fields like anthropology, archaeology, economics, education, geography, history, linguistics, political science, population health, psychology, and sociology. They tend to be more factual and scientific in tone — but they are still argumentative texts, not neutral recitations of information.

Sidenote

Studies of diverse cultures

A passage focused on diverse cultures may be classified as either humanities or social sciences depending on how it is framed. A passage analyzing the symbolic meaning in Indigenous visual art would likely fall under humanities; one examining demographic or migration patterns in a specific cultural group would more likely count as social sciences.

The most important thing to understand about CARS passages: everything you need to answer the questions is in the passage itself. You are not expected to bring any prior knowledge of the topic. CARS is testing how well you reason, not what you already know — and bringing in outside knowledge is one of the most common ways students lose points.

The three skill categories

AAMC organizes CARS questions into three skill categories, each representing a progressively deeper level of analytical thinking. Understanding these categories helps you recognize what a question is actually asking you to do — and where the limits of your answer should be.

Skill 1: Foundations of comprehension (30%)

These questions test whether you understood what you read at a basic level. They ask about the overall meaning of a passage, the author’s main argument, or the definition of a specific word or phrase as used in context. The focus tends to be local — working within a sentence or a paragraph rather than synthesizing the passage as a whole.

Even “basic comprehension” on CARS can be challenging. Passages are intentionally complex, unfamiliar vocabulary is common, and intricate sentence structures can obscure the author’s point. Paragraph references are often included in questions to help you locate the relevant portion of text.

Skill 2: Reasoning within the text (30%)

These questions require thinking across the passage — connecting ideas from different paragraphs, drawing inferences that follow from the overall argument, or evaluating how the author builds and supports their case. They go beyond comprehension of individual sentences and ask you to synthesize.

One critical rule applies here: Reasoning Within the Text questions do not ask for your personal opinion. You may disagree with the author’s conclusion, but your job is to assess whether that conclusion follows from the evidence the author presents in the passage — not whether it holds up against everything you know about the world. If you happen to know an outside fact that would complicate the author’s argument, ignore it.

Skill 3: Reasoning beyond the text (40%)

These questions are the most demanding and make up the largest share of CARS. They ask you to take the author’s ideas and do something new with them.

One type asks you to apply or extrapolate — to extend the author’s reasoning into a new scenario or context not discussed in the passage. The other type presents new information directly in the question stem and asks how that information would affect the author’s argument: does it strengthen, weaken, or complicate a specific claim?

Both types test mental flexibility. They require holding the author’s position clearly in mind while reasoning about hypotheticals or new contexts — always using only the passage and the new information provided, never prior knowledge.

A consistent rule across all three skill categories: your answers must be grounded in the passage. Whether a question targets comprehension, reasoning within the text, or reasoning beyond it, outside knowledge is not a valid basis for your answer.

Question types

CARS questions fall into six recognizable types. Each type asks you to do something different with the passage, and recognizing which one you’re dealing with before you start answering makes a meaningful difference.

Definitions

Main idea

Asks what the author is ultimately arguing or trying to accomplish across the passage as a whole. The answer has to account for the full scope of the text — not just one section, and not a claim broader than what the author actually makes. Approximately 15% of questions.

Explicit detail

Asks about something the author states directly. The answer is in the passage; your job is to locate it. Reading carefully and returning to the relevant section is more reliable than working from memory. Approximately 20% of questions.

Inference

Asks for a conclusion that the passage supports but does not state outright. The correct answer follows directly from what the author has written — it is a short, grounded step from the text, not an interpretation that requires filling in gaps with outside knowledge. Approximately 25% of questions.

Author’s tone/attitude

Asks how the author relates to the subject — whether they are skeptical, enthusiastic, detached, critical, or something else. The answer comes from the language of the passage itself: the adjectives, qualifiers, and rhetorical choices the author makes. Approximately 10% of questions.

New information

Introduces a fact, finding, or scenario not in the original passage and asks how it interacts with something the author argues. The new information is relevant to a specific part of the argument, not the whole passage — the task is to assess that targeted relationship. Approximately 20% of questions.

Reasoning/structure

Asks about the role a specific part of the passage plays in the author’s larger argument — why a paragraph opens where it does, what an example is doing, or how a counterargument fits into the author’s case. The question is about function, not content. Approximately 10% of questions.

Identifying the question type before you start answering is one of the most useful habits to build early in CARS practice. It shapes what you look for when you return to the passage and helps you stay anchored to what the question is actually asking.

What makes CARS different

Students who excel in the science sections sometimes struggle with CARS precisely because it requires a different mode of thinking. The skills that make someone good at memorizing biochemistry pathways — systematic content recall, pattern recognition within established frameworks — do not transfer directly to analyzing a philosopher’s nuanced argument about the nature of free will.

The challenges are real: passages are dense and written on unfamiliar topics, answer choices are designed to look similar, and the time pressure is significant. Reading at a high level for 90 minutes straight is also genuinely exhausting — mental fatigue is a real factor on later passages.

The good news is that CARS is a learnable skill. Score improvements come from deliberate, consistent reading practice over weeks and months — not from cramming content the week before. The key is learning to read more effectively, not just more quickly. Students who begin their MCAT prep struggling with CARS regularly reach competitive scores. The pages that follow cover strategy, passage approach, and practice methods in detail.