Why is one quote so much cheaper?

Usually a different parts tier, a smaller scope of work, diagnosis excluded, or a fault described from a code rather than confirmed by testing. Compare what each quote actually includes.

Should I always use manufacturer parts?

Not always. Quality aftermarket parts are appropriate for many repairs. What matters is knowing which tier your quote is based on and what warranty comes with it.

Do you charge for diagnosis?

Proper diagnosis takes time and equipment, so it is a line on the estimate rather than something hidden in the parts price. Ask any shop how they handle it before you agree to work.

Can I get a second opinion on someone else quote?

Yes. Bring the written estimate and the vehicle and we will tell you honestly whether the diagnosis holds up, including when it does.

Why two shops quote the same repair differently

What actually drives the number on a repair estimate: diagnosis, parts choice, labour time, access and what else has to come off.

Knowledge centre What repairs depend on

The short answer

A repair estimate is built from the quality of the diagnosis, the parts tier chosen, the published labour time for that vehicle, how much has to come off to reach the failed part, anything else found during inspection, and the warranty offered. Two quotes differ mostly because they describe different work, so compare the cause, the parts, the hours, the inclusions and the warranty rather than the totals.

An estimate is made of a few specific things

When two quotes for "the same job" are far apart, it is almost never one shop being greedy and the other being kind. It is usually that the two estimates are not describing the same work. Here is what the number is built from.

**Diagnosis.** A quote written from a scanned code is a guess. A quote written after the circuit was tested describes the actual fault. The second one costs a little more to produce and is far less likely to change halfway through.

**Parts choice.** Original manufacturer parts, quality aftermarket parts and budget parts can differ in price several times over for the same item, with different warranty cover behind them. A quote that does not say which one it is based on is hard to compare.

**Labour time.** Shops work from published labour times for the operation on that specific vehicle. The same repair on two vehicles can be an hour apart because of how the engine bay is packed.

**Access, and what else comes off.** Some jobs require removing components just to reach the failed part. Where that is the case, related parts are often worth replacing while they are already accessible, because doing it later means paying that access labour twice.

**What else was found.** An inspection that spots a leaking seal next to the repair area will include it. Another shop that did not look will not, and their number is lower because the work is smaller, not cheaper.

**Warranty.** Cover on parts and labour has a real value and should be part of the comparison.

How to compare two estimates properly

Check that both name the same cause, not just the same symptom.
Check the parts: brand, quality tier, new or remanufactured.
Check the labour hours, not just the total.
Check what is included: fluids, gaskets, seals, programming, an alignment where one is needed.
Check the warranty on parts and labour.
Check whether diagnostic time is included or extra.

Why we quote in writing

We would rather explain the number than defend it. That means a written quote that names the fault we found, the parts we intend to use, and the labour involved. If we find something else once the work is under way, you get a call before anything else is done.

Not sure about a quote you have been given?

If another shop has given you a number you are not comfortable with, bring the estimate and the vehicle to us for a second opinion. You will get an honest read on whether the diagnosis holds up, including when the answer is that their quote is fair.

How we quote at Total Performance Tuning

We quote after we have tested, not before. For anything beyond a routine service you get the diagnostic findings first, then a written plan that lists the parts, the labor and what is optional. If we are not certain yet, we say so rather than padding the number to cover ourselves.

Where there are cheaper and longer-lasting options, we give you both and tell you which one we would pick for your vehicle and how you drive it. If a repair is not worth doing on that vehicle, you will hear that too.

We are RepairPal Certified, MaxCare is welcome, and qualifying repairs carry a minimum 12-month, 12,000-mile warranty, subject to plan terms — which is part of why two quotes on the same job are rarely the same job. Holding a quote from another shop? Bring it in for a second opinion.

**Book it:** 4225 W Old Highway 441, Mount Dora, FL 32757. Monday to Friday, 8:30am to 6:00pm. Call 352 973 5565.

Common questions

Why is one quote so much cheaper?: Usually a different parts tier, a smaller scope of work, diagnosis excluded, or a fault described from a code rather than confirmed by testing. Compare what each quote actually includes.
Should I always use manufacturer parts?: Not always. Quality aftermarket parts are appropriate for many repairs. What matters is knowing which tier your quote is based on and what warranty comes with it.
Do you charge for diagnosis?: Proper diagnosis takes time and equipment, so it is a line on the estimate rather than something hidden in the parts price. Ask any shop how they handle it before you agree to work.
Can I get a second opinion on someone else quote?: Yes. Bring the written estimate and the vehicle and we will tell you honestly whether the diagnosis holds up, including when it does.

Want a number before you commit?

Send us the vehicle and the problem and we will come back with a written quote.

Get a quote

Written by Total Performance Tuning. Last updated September 19, 2026.