Before you shell out a lot of cash for a car, getting a second opinion is crucial. This is especially true when it comes to repairs, which can easily turn into one of the biggest money pits in personal finance. Cars depreciate in value, and spending excessively on them can often feel like throwing money away.

My own car, which I affectionately call Moose, is eleven years old and was facing some potentially expensive repairs. The dealer suggested a complete replacement of the exhaust system, quoting me around $1,200 to $1,500—nearly 35% of Moose’s total value. That just didn’t sit right with me.

Given how notorious the auto service industry can be for shady dealings, I sought a second opinion. Years ago, when I first moved to San Francisco, I became acquainted with Fred, an auto mechanic whose shop was next to my house. Over the years, I’ve trusted him with seven different cars and referred many friends his way due to his reliability and honesty. He often advised against unnecessary repairs that wouldn’t affect the car’s safety or functionality, helping me avoid overspending.

When I took Moose to Fred, he quickly discovered that the problem wasn’t with the muffler as the dealer had suggested. Instead, it was just a rusted bolt on the heat guard causing a rattling noise—a simple $40 fix. Furthermore, he advised that my slight engine leak wasn’t worth the extensive repairs the dealer suggested. Instead, he recommended just topping off the oil regularly.

Fred did recommend some necessary maintenance, like replacing my brake pads and front rotors to ensure safety for the upcoming winter—something I hadn’t done in over four years. This practical and honest approach to car maintenance starkly contrasts with the costly and often unnecessary services pushed by dealerships.

Servicing your car at a dealership is usually the most expensive option. In San Francisco, for instance, labor costs at dealers are double what you’d pay at an independent shop like Fred’s. I ended up paying just $75 for Fred to change my oil and fix the heat guard, a fraction of what the dealer would have charged. Dealers often try to upsell you on additional services you might not need. It’s a common tactic to hand you a long list of potential repairs after a simple oil change.

The value of a trustworthy mechanic is immense—almost akin to having a good doctor. Knowing you’re not getting scammed or misled is priceless, especially when you lack deep knowledge about cars. Here are a few tips to find a reliable mechanic: do some preliminary research to sound knowledgeable, be polite and straightforward, and offer referrals which can lead to better service and maybe even discounts.

Always make it clear to service providers that you appreciate good work and will refer others if they do a good job. It’s a strategy that pays off in every service industry, not just auto repair. This approach has not only saved me significant amounts of money but has also extended Moose’s life, proving once again the value of a second opinion. Remember, a trustworthy mechanic is worth their weight in gold, offering you not just savings, but peace of mind.