Free ASE Practice Test (20 Questions, A1 to A9)
20 free questions mixed from across the ASE tests: engine, transmission, brakes, electrical, A/C, engine performance, diesel, and more.
Free practice tests
Free ASE G1 Practice Test (Maintenance and Light Repair)
15 free G1 questions covering the maintenance and light repair work you see every day: brakes, electrical, engine, HVAC, suspension, and more.
ASE A1 Engine Repair Practice Test (Free)
15 free A1 questions on engine diagnosis, cylinder heads and valve train, the block, lubrication, and cooling.
ASE A2 Automatic Transmission Practice Test
15 free A2 questions on automatic transmission diagnosis, hydraulic tests, power flow, electronic controls, and in-vehicle service.
ASE A4 Suspension and Steering Practice Test
15 free A4 questions on steering systems, front and rear suspension, wheel alignment, wheels, tires, and TPMS.
Free ASE A5 Brakes Practice Test
15 free A5 questions on brake hydraulics, disc and drum brakes, power assist, parking brakes, and ABS and stability control.
ASE A6 Electrical Practice Test (Free)
15 free A6 questions on circuit basics, electrical testing, batteries, starting and charging, lighting, and module networks.
ASE A7 Heating and Air Conditioning Practice Test
15 free A7 questions on A/C performance diagnosis, refrigerant service and handling, components, heating, and climate controls.
Free ASE A8 Engine Performance Practice Test
15 free A8 questions on driveability diagnosis, OBD II and scan data, ignition, fuel and air induction, emissions, and sensors.
ASE Technician A Technician B Practice Questions
15 free Tech A / Tech B questions pulled from across the ASE tests, so you can practice the format that trips everybody up.
Study guides
How to Answer Technician A Technician B Questions
A simple way to handle Technician A / Technician B questions on the ASE tests, plus the traps that catch people.
Fuel Trim Explained: Short Term vs Long Term
What short and long term fuel trims mean, what positive and negative numbers tell you, and how to use them to find vacuum leaks, bad MAFs, and more.
Compression Test vs Leak-Down Test: What's the Difference?
What a compression test and a leak-down test each tell you, the wet test trick, and how to tell rings from valves from a head gasket.
Voltage Drop Test: How to Do It and What It Means
How to do a voltage drop test, where the meter leads go, why the circuit has to be working, and what the readings mean.
Parasitic Draw Test: How to Find a Battery Drain
How to find what's draining a battery overnight: setting up the meter, waiting for modules to sleep, and tracking down the circuit.
How to Test a Car Battery (Voltage, Load, and Conductance)
How to check state of charge, do a load test, use a conductance tester, and avoid the mistakes that give you a false result.
Engine Cranks Slow? How to Diagnose It
How to figure out a slow crank: battery, cables, starter, or the engine itself, using current draw and voltage drop.
AC Gauge Readings: What High and Low Side Tell You
What high and low side A/C pressures tell you, and the patterns that point to low charge, overcharge, restrictions, and a bad compressor.
Spongy Brake Pedal: Causes and How to Fix It
Why a brake pedal feels spongy, the bleeding mistakes that keep it that way, and how it's different from a low or sinking pedal.
Camber, Caster, and Toe Explained (Pulls and Tire Wear)
What camber, caster, and toe each do, which way the car pulls, what tire wear to expect, and how thrust angle fits in.
Upstream vs Downstream O2 Sensor: What's the Difference?
What the upstream and downstream O2 sensors each do, what a healthy converter looks like on scan data, and what can fake a bad cat.
How to Diagnose a Misfire (Swap Tests and More)
How to find the misfiring cylinder, how a swap test works, and what to check when the misfire won't move.
Transmission Slipping? How Techs Diagnose It
How to narrow down a slipping automatic transmission with the apply chart, line pressure, and scan data, plus the electronic causes people miss.
Signs of a Blown Head Gasket (and How to Confirm It)
The symptoms of a blown head gasket, the tests that confirm it, and what to know about MLS gaskets before the repair.
Which ASE Test Should You Take First?
A quick rundown of G1 and A1 through A9, and a simple way to pick which ASE test to start with.
Getting ready for your ASE tests?
