• Make sure the work ticket lists the symptoms your car is experiencing, not recommended repair. If you have to bring it in again for the same repair, make sure the ticket lists the same symptoms.

• Write "estimate only" on the work ticket, or "I authorize repairs up to (a specific dollar amount)."

• If the estimate is large, take it to another mechanic for a second opinion. If your car is not drive-able, have it towed to another repair shop for a second estimate.

• If your car is towed to a mechanic, don't allow the tow-truck driver to choose the repair shop. He or she may be paid to steer your vehicle to a particular shop.

• Don't rely on a nationally famous name when you go for a car repair. Too often at a franchise location, the parent company fails to accept responsibility for a problem.

• Beware of specialty repair shops, particularly brake and muffler shops. A good reputation goes a long way.

• Having your oil changed at an oil-change shop is fine, but don't authorize any other work.