What features should an automotive multimeter have?
Short answer: Look for auto-ranging, a fast-updating display, min/max recording, a 10 amp current range, good leads, and a proper CAT safety rating; temperature, frequency and duty cycle are useful extras.
An automotive meter does most of its work on 12 volt circuits, but it still needs to be accurate, quick and safe. Auto-ranging saves time and avoids reading the wrong scale. A fast display or bar graph helps catch fluctuating signals that a slow digital readout misses. Min/max recording captures a dropout while you wiggle a harness or drive.
You will want a 10 amp range with a fused input for current tests, and a low-current range for parasitic draw. Frequency, duty cycle and temperature functions help with sensors, solenoids and cooling systems. Good leads matter as much as the meter: sharp probes, back-probe pins and alligator clips save frustration.
If you work on hybrids or electric vehicles, insist on a meter and leads rated for the voltage category of the job, typically CAT III 1000V or better, and pair it with insulated gloves and the right training. A cheap meter is not the tool for high-voltage systems.
Tools used for this job
General guidance only. Follow the vehicle and tool manufacturer's procedures, and confirm vehicle coverage on the tool maker's list before buying.