Nobody looked your price up — it was assembled out of four separate decisions, and only two of them are yours to change. This is how to find out which decision produced your number, what your state already requires the shop to tell you, and what to do when the bill arrives higher than the estimate you signed.
US Bureau of Labor Statistics, Occupational Outlook Handbook, May 2024 data.
Every source that publishes ‘the average cost of a repair’ earns money from repairs. No government agency, no state agency and no university measures it. So this guide refuses to print a price — and gives you a ninety-minute method for building the only benchmark that has ever meant anything instead.
On whether a shop must disclose a diagnostic fee in advance: New Mexico says failing to do so is an unfair trade practice, Ohio requires disclosure on first contact as of 21 March 2026, and Georgia's own Attorney General states in writing that no Georgia law requires it. That is why the book tells you how to check your own state rather than generalising.
In California no work may begin and no charge may be made without one, plus your authorisation. Bus. & Prof. Code §9884.9.
Illinois: more than 10% over needs new consent. New Mexico: the greater of 10% or $50. In New York and Illinois the oral authorisation must be logged with date, time and the name of who gave it.
In California if you ask when you authorise the estimate; in New York if you ask in writing before work begins. Ask late and it is usually too late.
California requires it on body estimates, and presumes parts are new unless labelled otherwise. 16 CCR §3353.
The book is built around the estimate in your hand. Work down it in order, and each line has a question attached to it.
Hours, rate, parts or scope. Two are fixed by the labour guide and the shop's posted rate. Two are negotiable, and one of those moves the total more than everything else combined.
Seven lines, seven questions — starting with whether the complaint at the top describes the symptom in your words, and ending with the authorisation wording you are about to sign.
‘Can you split this into what's unsafe to drive on, what will fail soon, and what can wait?’ It is not confrontational, and it turns one intimidating total into three decisions you get to make.
Three shops of different types, the same four questions in the same order, into the same nine-row table. Your car, your city, this week — the only comparison that has ever meant anything.
The invoice over the estimate, the repair that did not fix it, the shop that will not release your car. Each has a letter, and each has a rule behind it.
Instant download. PDF and DOCX, so the letters can be edited rather than retyped.
Nineteen chapters in four parts — how the price is built, warranty and free repairs, when it goes wrong, and what to check before you spend anything.
Three shops, four questions, one nine-row comparison table. Produces a real price for your car in your city, which no published average can.
Goodwill request to the manufacturer; invoice exceeds the authorised estimate; complaint to a state regulator or Attorney General; request for return of replaced parts; payment under protest; the repair did not fix the fault; warranty denial — request for a written reason; and a card billing dispute.
The four-question quote call; pinning down the diagnostic fee; open campaigns on the VIN; getting the diagnosis in writing; the three-bucket split; booking a second opinion; and escalating to the owner.
California, New York, Illinois, New Mexico, Ohio and Georgia — what each requires, with the statute or regulation cited, including the one that flatly requires nothing.
When a shop can keep your car, and the statutory limits on it — including California's caps on charges you never consented to in writing.
Recalls, campaigns, warranty and technical service bulletins — four categories people constantly confuse, and how to check each in ten minutes for nothing.
Twelve rows, seven columns. Protects a warranty claim, stops you paying twice for a part still under guarantee, and is worth real money when you sell.
Five prompts that genuinely help, and a blunt list of what never to ask — starting with ‘is this a fair price?’.
Eight free lookups with what each one will not do, twelve terms in plain English, and honest answers to nine questions.
Every ‘average repair cost’ figure available comes from a repair-booking site, an estimating-data vendor, a parts retailer or a warranty seller. None is neutral. The book names that and gives you a method instead.
Six states, with the code section for each — and it shows you where they contradict each other rather than pretending American repair law is uniform.
The request for your old parts has to be made when you authorise the estimate in California, and in writing before work begins in New York. Right question, wrong moment, and it fails.
No neutral source describes how labour-guide book time is calculated. No government page defines powertrain versus bumper-to-bumper. There is no published manufacturer goodwill policy. The book says so instead of filling the gaps.
Chapter 3 takes it apart line by line. Start there, then read Chapter 2.
Chapter 8 and Letter 2. In several states the shop must be able to produce the authorisation record, with date, time and name.
Generally false in the US since 1975. Chapter 6, and Letter 7 asks for the reason in writing.
Letter 6, and the one document that makes the complaint stick — a written second opinion, on letterhead.
Chapter 9, before you leave it on their lot to make a point. Storage charges accrue while you do.
The book will not give you one, on purpose, and Chapter 4 explains at length why no honest source can.
It gives you three states' licence lookups and an audition method instead, so you can check rather than trust.
The rules cited are US federal and state law.
A single hour at a typical posted rate is more than this book. The ninety-minute benchmark method in Chapter 4 is free to run.
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An explanation of consumer repair rules. Not legal advice, not mechanical advice, and buying it creates no professional relationship.
Only someone who has looked at your car can. Much of the book is about how to get a second person to look at it.
Six states were checked properly. Chapter 12 shows you how to check your own in about ten minutes, which you should do before relying on anything here.
AAA's 11.04 cents per mile for maintenance, repair and tyres. AAA sells roadside assistance, insurance and repair referrals, and the figure bundles an extended warranty. It is the only broad dated figure that exists, so it is printed — with the warning attached.
This edition has just been released. Rather than publish testimonials from people who do not exist, these spaces are held for the first genuine reader reviews. On a product whose whole argument is that unsourced numbers should not be trusted, that seemed like the only defensible choice.
If the three-bucket question changed what you authorised, we would like to hear how — and to publish it in your own words, with your permission.
We will not publish claims about amounts saved. What a repair costs depends on things no document controls.
Reserved for someone who checked their VIN and found an open recall before paying for the repair. That is the chapter we would most like to hear worked.
Check your VIN at nhtsa.gov/recalls. Ninety seconds, free, and the repair is free with no mileage limit if there is an open safety recall. Then ask a dealer whether there are open campaigns on the VIN, which the NHTSA tool does not show.
Because no neutral source publishes it. There is no government or academic price index for car repair, and every figure available comes from a business that earns money from repairs. Chapter 4 gives you a ninety-minute method for producing a real benchmark for your car instead.
It depends on your state and on whether they obtained authorisation. In California any charge above the estimate needs consent; in Illinois more than 10% over needs new consent; in New Mexico the greater of 10% or $50. In New York and Illinois the shop must be able to produce the oral authorisation record with date, time and name.
Generally not. Under the Magnuson-Moss Warranty Act a warrantor may not condition coverage on using a branded part or designated service unless it supplies that part or service free. It may decline a specific claim if it shows a third-party part caused that failure — which is a different thing, and the burden is theirs.
Usually yes over an undisputed unpaid bill — that is a possessory lien. It is not unlimited: California caps what can be held over work you never consented to in writing. Chapter 9 covers this before you decide to leave the car there.
Six states are covered in detail with statutes cited. Chapter 12 shows you how to find your own state's rule in about ten minutes, and tells you the four specific things to look for. Extrapolating from six states to fifty would be inventing law, so the book does not.
Both. Every purchase includes the PDF and an editable DOCX, so the letters can be filled in and sent rather than retyped.
Email sales@viralbydesign.co within 7 days of purchase for a full refund. No forms, no explanation required.
Open it, check your VIN at nhtsa.gov, and read Chapter 2 to find out what your state already requires the shop to give you. If it is not what you expected, email sales@viralbydesign.co within 7 days of purchase and you get a full refund. No forms, no explanation required.
A written estimate, an authorisation before the bill goes over, your old parts back — in many states these are conditions of doing business, not courtesies. The shops that comply do it every day. They are simply never asked.
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