AI Car Mechanic
Emergency

Common Car Issues
Diagnostic Guide

Practical troubleshooting for 40 common car problems. Find symptoms, causes, and step-by-step repair guides organized by system.

Problem Guides
40
Vehicle Systems
8
Drive-Safety Verdicts
40
AI Mechanic
24/7

Search by symptom, system, or specific issue

Engine Problems

5 common issues

Engine Overheating

Critical
4 symptoms4 causes

Oil Leak

Medium
4 symptoms4 causes

Check Engine Light

Variable
4 symptoms5 causes

Rough Idle

Medium
5 symptoms6 causes

Engine Knocking

Critical
3 symptoms4 causes

Transmission Issues

5 common issues

Transmission Slipping

High
4 symptoms3 causes

Hard Shifting

Medium
4 symptoms3 causes

Grinding Gears

Critical
3 symptoms3 causes

Delayed Engagement

Medium
3 symptoms4 causes

Transmission Fluid Leak

High
3 symptoms4 causes

Battery & Electrical

5 common issues

Dead Battery

High
4 symptoms4 causes

Bad Starter Motor

High
4 symptoms3 causes

Alternator Failure

High
4 symptoms3 causes

Electrical Short Circuit

Critical
5 symptoms5 causes

Flickering Headlights

Medium
3 symptoms4 causes

Brake System

5 common issues

Squeaking Brakes

Medium
3 symptoms3 causes

Spongy Brake Pedal

Critical
3 symptoms3 causes

Brake Fluid Leak

Critical
3 symptoms3 causes

ABS Warning Light

High
4 symptoms5 causes

Brake Pulling

Medium
3 symptoms4 causes

Suspension & Steering

5 common issues

Uneven Tire Wear

Medium
4 symptoms3 causes

Suspension Noise

Medium
4 symptoms3 causes

Car Pulls to One Side

Medium
3 symptoms3 causes

Steering Wheel Vibration

High
4 symptoms5 causes

Wheel Alignment Issues

Medium
5 symptoms4 causes

HVAC System

5 common issues

AC Not Cooling

Low
3 symptoms3 causes

Heater Not Working

Low
3 symptoms3 causes

Bad Smell from Vents

Low
2 symptoms4 causes

Blower Motor Failure

Medium
3 symptoms3 causes

AC Compressor Issues

High
4 symptoms4 causes

Fuel System

5 common issues

Poor Fuel Economy

Medium
5 symptoms6 causes

Engine Stalling

High
4 symptoms5 causes

Fuel Pump Failure

Critical
4 symptoms4 causes

Fuel Injector Problems

Medium
4 symptoms4 causes

Gasoline Smell

Critical
3 symptoms4 causes

Exhaust System

5 common issues

Exhaust Smoke

High
4 symptoms6 causes

Loud Exhaust

Low
2 symptoms5 causes

Catalytic Converter Failure

High
4 symptoms4 causes

Exhaust Leak

Medium
4 symptoms5 causes

EGR Valve Problems

Medium
4 symptoms4 causes

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