Test Drive 6: Mechanic's Checklist

The best "warranty" you can get with a used car is a $45 to $60 independent mechanic's inspection. One of the best places to get an inspection is your local office of the American Automobile Association (AAA). Because AAA inspection centers are not affiliated with repair facilities, they have no incentive to recommend unnecessary repairs. These diagnostic inspections are available to both members and non-members. If the seller will not allow you to take the car for a mechanic's inspection, don't buy it.

While AAA and most mechanics follow standard procedure when inspecting cars, make sure the following areas are included:

Engine Compression

This check will give you a good idea of the internal condition of the engine, including the valves and piston rings.

Brakes

The mechanic should take off at least one front and one rear wheel to inspect the condition of the brake disk or drum and brake pads. All the brake lines should be checked for rust or damage.

Front Wheel Bearings and Suspension System

The ball joint seals should be intact, the structural parts solid and straight, and the springs and shocks properly connected. Check shock absorbers for leakage and loose mountings.

Frame

Check the frame for rust, breaks, and signs of welding. If the frame or underbody has been welded, the car has either been in an accident or, worse, is actually two different cars welded together.

Exhaust

Inspect the muffler system and look for loose or missing brackets, rust, and holes.

Cooling System

Pressure test the radiator.

Electrical

Test the battery and charging system.

Transmission

Check the entire drivetrain.

Road Test

Ask if the mechanic will road test the car for you.

Repair Estimate

Have the mechanic give you an estimate for the cost of any repairs deemed necessary. This will be a big help when it's time to negotiate.

TIP: Phony Inspection

Beware of dealers who push you toward certain diagnostic centers or mechanics for your inspection. Sometimes mechanics and privately operated diagnostic centers have arrangements with certain used car dealers to ensure that the dealer's car checks out "just fine" in exchange for referrals to the mechanic or diagnostic center.

TIP: Mechanical Problems

Don't automatically reject a car with a mechanical problem. The cost of repairing the problem may not be that great (have a mechanic give you an estimate) and you can use the problem and repair estimate to negotiate a lower price on the car.

from The Car Book 1998 by Jack Gillis