Last updated: November 4, 2026 – By Diane Holcomb

November 2026 update: refreshed the vehicle details and confirmed the no-referral-fee policy still stands for every chain covered on this site.

Timeline of Diane Holcomb's career: service advisor at Charlotte NC dealerships from 2014 to 2021, independent shop 2021 to 2023, and writing about real car service costs since 2023. Drives a 2019 Honda CR-V and a 2007 Toyota Camry, takes no referral fees.

For seven years I sat on the other side of the service counter and told people what their car was going to cost. Not the sticker, not the ad – the real number on the repair order after the tech was done poking around. That job teaches you fast that most “estimates” people get are missing half the story, and that’s the gap I write to fill here.

I started in 2014 as a service advisor at a multi-brand dealership in Charlotte, North Carolina, mostly running the Honda and Toyota program. My whole day was translation: the tech would come back with a diagnosis, and I’d turn “the caliper’s seized and it chewed the pad” into a price, a timeline, and a plain-English reason the customer could actually decide on. I wrote the work orders, I delivered the estimates, and I watched a lot of faces fall when a “quick” job turned into a real one.

In 2021 I moved to an independent multi-brand shop for two years, because I wanted to see the same work from the other side of the fence. Less paperwork, a completely different parts-and-labor structure, and a much more honest view of where dealership pricing comes from and where it pads. Between the two, I’ve watched the same repair get quoted three different ways depending on who’s writing it up.

By 2023 my sister, my neighbors, and half my old high school were texting me photos of estimates asking “is this real?” That’s when it clicked that there was an actual information gap I could fill from firsthand experience, so I started writing about it full time.

The estimate I blew – and why I lead with it

I told my sister her timing belt job would run about $600. She paid $980. I’d priced it for a four-cylinder in my head; she had the V6. Same repair name, completely different engine, and I was the one who was supposed to know better. That miss is exactly why I don’t trust a generic number, and why every page here breaks pricing down by what actually moves it – engine size, drivetrain, your region, whether it’s a dealer or a corner shop. A number without those caveats isn’t an estimate. It’s a guess with confidence.

What I drive

My daily is a 2019 Honda CR-V EX-L I bought used at around 30,000 miles – that’s my reference car for Honda- and Toyota-typical maintenance intervals and the math behind them. I also keep a 2007 Toyota Camry that my dad handed down, and it’s the car I lean on whenever I’m writing about older vehicles: high mileage, unpredictable repair bills, the rust-belt stuff that doesn’t show up on a maintenance schedule.

How I keep this honest

I take no referral fees from any service chain, and I have no advertising relationship with the shops or brands I write about. If a chain is the best value in a category, I’ll say so; if one consistently overcharges for what you get, I’ll say that too, and neither one pays me a cent either way. When I don’t have a verified price for something – a small regional shop, a service that varies wildly by location – I say so plainly and give you a range to sanity-check locally instead of inventing a number that looks precise.

I cover the money side of car service: what things cost, chain-by-chain price comparisons, coupons, and the dealer-versus-independent-versus-chain decision. For the deep mechanical and diagnostic write-ups, that’s my colleague Eddie Brennan, an ASE Master tech who handles the “why is it doing that” side of the site.

Frequently Asked Questions

What are Diane Holcomb’s qualifications to write about car costs?

I spent seven years (2014–2021) as a service advisor at multi-brand dealerships in Charlotte, NC, running mostly the Honda and Toyota program, then two years (2021–2023) at an independent multi-brand shop. My job was writing repair orders and delivering cost estimates to customers every day, so I’ve quoted thousands of real jobs across both dealer and independent pricing structures. I’m not a technician – that’s Eddie’s lane – I’m the person who turned the tech’s diagnosis into the number you actually pay.

Does Diane take money from the shops or chains she writes about?

No. I take no referral fees and have no advertising or affiliate relationship with any service chain, dealership, or parts brand mentioned on this site. That’s a deliberate choice so I can call a bad value a bad value. If Jiffy Lube or Firestone is the right pick for a given job, I’ll say so, and if they’re overpriced for what you get, I’ll say that too – the recommendation is the same whether or not you ever walk in their door.

Why does this site have two writers instead of one?

Car costs and car repairs are two different kinds of expertise. I come from the front office – pricing, estimates, coupons, and comparing chains – so I write the “how much does this cost” pages. Eddie Brennan is an ASE Master Certified technician who spent 11 years under the car, so he writes the diagnostic and repair-technique pages. Splitting it keeps each topic in the hands of someone who actually did that job.

How does Diane decide what a repair “should” cost?

I start from verified sources – a chain’s published pricing, a manufacturer’s maintenance schedule, or a real repair order – and then break the number down by the things that actually move it: engine size, drivetrain, parts quality, your region, and whether you’re at a dealer or an independent shop. When there’s no reliable published price, like at a small regional shop, I give a clearly labeled range and tell you to confirm locally rather than pretend I know the exact figure. A precise-looking number that’s wrong is worse than an honest range.

What cars does Diane actually drive?

A 2019 Honda CR-V EX-L bought used around 30,000 miles, and a 2007 Toyota Camry handed down from my dad. The CR-V is my reference for typical Honda/Toyota maintenance costs, and the high-mileage Camry is what I lean on when I write about older cars and their less predictable repair bills.

Can I trust the prices on Your Best Deals if they’re just estimates?

Every price on the site is either tied to a verified source – linked in the Sources section on each page – or clearly flagged as an estimated range when no official figure exists. Prices also shift with location, franchise ownership, and time, so I date every page and note what was checked at the last update. Use the numbers here to know whether a quote you got is in the right ballpark, then confirm the exact figure with the shop for your specific car and ZIP code.

How do I contact Diane or suggest a topic?

Head to the contact page. I read topic suggestions, and if you send me a real repair order or estimate you’re unsure about, that’s often what turns into the next article. The pages here exist because people kept asking me the same “is this normal?” questions, so more of those questions are really welcome.

Sources

Author background and policies verified and current as of November 4, 2026. Pricing on individual articles is verified against the official chain or manufacturer sources linked on each page.

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Diane Holcomb

Diane Holcomb spent seven years as a service advisor at multi-brand dealerships in Charlotte, NC, and two more at an independent shop before she started writing about real-world car service costs in 2023. She writes the pricing, coupon, and chain-comparison pages on Your Best Deals and takes no referral fees from any shop she covers. She drives a 2019 Honda CR-V and a hand-me-down 2007 Toyota Camry.