Car Repair Cost Calculator
Estimate any car repair from its parts price, billed labor hours and the shop's hourly rate, or enter a written quote and see the labor rate or hours it really implies. Every number is shown with its formula.
Car repair cost = parts + (billed labor hours × hourly rate) + fees and tax. Most U.S. independent shops charge $100–$159/hr (66% of shops, OEC/PartsTech survey, September 2025) and franchised dealers average $186/hr (NADA 2025). So a 4.5-hour job with $420 of parts runs about $995–$1,282 at an independent shop with 8% shop supplies, 7% parts tax and $60 of fees.
Published 2026-10-19 · Labor-rate bands are sourced (below); everything else is your input or our arithmetic. Not a quote.
Build an estimate or check a quote
Every field is optional. Leave the rate blank to use the shop-type band. Enter a quote total and leave one of parts, hours or rate blank to solve it.
Result
| What was solved | |
| Detail | |
| Rate band used |
How do you use the car repair cost calculator?
- Build: enter the parts price and billed hours; leave the quote blank. The rate band for the shop type fills in if you don't know the rate.
- Check a quote's rate: enter the quote total, parts and hours; leave the rate blank. You get the hourly rate the quote implies and where it sits against the band.
- Check a quote's hours: enter the quote total and parts; leave hours blank. You get the billed hours the quote implies at your rate or across the band.
- Check the parts: enter the quote total and hours; leave parts blank to see what the quote leaves for parts.
- Add shop supplies, parts tax and fees only if they are on the quote; blank means zero.
Formula and assumptions
Total = parts × (1 + parts tax) + hours × rate × (1 + shop supplies) + fees. Solved forms: rate = (total − taxed parts − fees) ÷ (hours × (1 + supplies)); hours = (total − taxed parts − fees) ÷ (rate × (1 + supplies)); parts = (total − fees − labor) ÷ (1 + tax).
- Independent rate band $100–$159/hr: the three most common average-labor-rate brackets ($100–$119, $120–$139, $140–$159; together 66% of about 700 shops) in the OEC/PartsTech U.S. general repair shop survey, September 2025.
- Dealer $186/hr: average customer mechanical labor rate at franchised new-car dealers, NADA 2025 Annual Financial Profile (one average, so the band is one number).
- Labor tax rules differ by state, so the calculator taxes parts only; add labor tax under fees if your quote shows it.
How many labor hours is a quote charging? (implied hours table)
The same quote total can hide very different labor: a $1,000 quote with $400 of parts is 6.0 billed hours at $100/hr but 3.2 hours at the $186/hr dealer average. Before comparing two quotes, check that they charge similar hours; a lower rate with more hours can cost the same.
| Quote total | Parts | at $100/hr | at $130/hr | at $159/hr | at $186/hr |
|---|---|---|---|---|---|
| $600 | $250 | 3.5 h | 2.7 h | 2.2 h | 1.9 h |
| $1,000 | $400 | 6.0 h | 4.6 h | 3.8 h | 3.2 h |
| $1,500 | $600 | 9.0 h | 6.9 h | 5.7 h | 4.8 h |
| $2,500 | $1,000 | 15.0 h | 11.5 h | 9.4 h | 8.1 h |
What hourly rate does a quote imply?
When a shop gives you the parts price and the billed hours, the rest of the quote is labor, and dividing it by the hours gives the rate you are really paying. A $700 quote with $200 of parts is $125/hr if it bills 4 hours, inside the band, but $167/hr if it bills 3 hours, above every common independent bracket and close to the dealer average.
| Quote | Parts | Billed hours | Implied rate | Against the band |
|---|---|---|---|---|
| $700 | $200 | 4 h | $125/hr | inside the band |
| $700 | $200 | 3 h | $167/hr | above the band |
| $1,200 | $450 | 4 h | $188/hr | above the band |
| $1,200 | $450 | 5 h | $150/hr | inside the band |
Worked example: a $1,180 quote, line by line
A $1,180 quote for a job with $420 of parts, 4.5 billed hours, 8% shop supplies, 7% tax on parts and $60 of fees implies a labor rate of $138/hr, which is inside the band for independent shops.
| Line | Calculation | Amount |
|---|---|---|
| Parts with tax | $420 × 1.07 | $449 |
| Fees | diagnosis + disposal | $60 |
| Labor incl. supplies | $1,180 − $449 − $60 | $671 |
| Labor before supplies | $671 ÷ 1.08 | $621 |
| Implied rate | ÷ 4.5 h | $138/hr |
| Same job built at the independent band | $100–$159/hr | $995–$1,282 |
| Same job at the dealer average | $186/hr | $1,413 |
Several repairs at once: CarCalTune model ranges
If you are pricing more than one job, add the ranges below; each comes from CarCalTune's open repair models (js/calcs.js), which are illustrative U.S. budgeting assumptions, not national averages, with labor at the sourced independent band where the model uses hours. Shops may charge less labor when two jobs share the same disassembly, so ask for a combined quote.
| Repair | Model range | Midpoint |
|---|---|---|
| Brake pads, one axle (standard pads) | $140–$230 | $185 |
| Brake pads + rotors, one axle | $290–$530 | $410 |
| Alternator, 4-cylinder | $400–$700 | $550 |
| Spark plugs, 4 cylinders (iridium) | $132–$260 | $196 |
| Timing belt kit + water pump | $580–$1,150 | $865 |
| Fuel pump module, tank lowered (aftermarket, independent) | $450–$1,136 | $793 |
| Transmission fluid & filter service | $150–$300 | $225 |
Result looks wrong? Check these
- Negative rate or hours: the parts, tax and fees you entered already add up to more than the quote. Check that parts are not counted twice (some quotes list parts with tax already included).
- Huge implied rate: the quote probably includes diagnosis, extra parts or more hours than you entered. Ask for the line items.
- Percent typed as a decimal: enter 8 for 8% shop supplies, not 0.08.
- Dealer band shows one number: NADA publishes a single average, so the dealer band is $186/hr exactly; type your dealer's posted rate if you know it.
- "Enter billed labor hours": without a quote total the calculator needs hours to build an estimate.
When not to use this calculator
- You don't know what's wrong yet: pay for a diagnosis first; an estimate for the wrong repair is worthless.
- Body and collision work: paint, materials and frame time are billed differently from mechanical labor.
- Safety recalls: check NHTSA's recall lookup first; recall repairs are done free by dealers.
- Exact prices for your car: this tool does the math on your numbers; it does not look up part prices or labor times.
FAQ
How much does car repair cost?
Car repair cost is parts plus billed labor hours times the shop's hourly rate, plus fees and tax. At the $100–$159/hr rate band where 66% of U.S. independent shops sit (OEC/PartsTech survey, 2025), each billed hour adds $100–$159; at the NADA 2025 dealer average it adds $186.
How do I estimate a car repair myself?
Get the part price (parts store or online catalog), the billed labor hours for the job from the shop or a labor guide, and the shop's posted hourly rate; then add parts + hours × rate + fees. Enter those in the calculator above and it shows the total range.
How can I tell if a repair quote is fair?
Ask the shop for the parts price and the billed hours, then enter the quote total: the calculator solves the hourly rate the quote implies. A rate inside $100–$159/hr is where most independent shops sit; a quote that only works at a much higher rate means more hours or pricier parts than you were told.
How many labor hours is my quote charging?
Subtract parts and fees from the total and divide by the hourly rate: a $900 quote with $300 of parts is about 3.8–6.0 billed hours at $100–$159/hr. The calculator does this when you leave the hours blank.
Are dealers more expensive for repairs?
On labor, usually: the NADA 2025 average dealer rate is $186/hr against $100–$159/hr at most independents, so the same 4.5-hour job costs $131–$418 more in labor at a dealer in our worked example. Parts prices can differ too.
Does a repair estimate include tax and fees?
Not always: RepairPal says its estimates do not include taxes, disposal fees or diagnostic charges, so add those lines yourself. The calculator has fields for parts tax, a shop-supplies percentage and other fees.
What if my quote is way above the estimate?
Ask which parts (OEM or aftermarket) and how many billed hours the shop used, and whether diagnosis or extra parts are included; one of those explains most gaps. Then compare a second written quote for the same scope of work.
Can this calculator estimate a repair for my exact car?
No, it does not know your car's labor time or part prices; it does the arithmetic on numbers you enter, using sourced labor-rate bands when you leave the rate blank. For model-specific prices, ask a shop or use the dedicated repair pages linked below.
Sources
- OEC / PartsTech, U.S. General Auto Repair Shop Survey Report (about 700 shops, September 2025), summarized in Shop Stats: the operational numbers behind top shops: average labor-rate brackets.
- NADA, NADA Data 2025 Annual Financial Profile of America's Franchised New-Car Dealerships: average customer mechanical labor rate.
- RepairPal, Estimator page (retrieved 2026-10-19): estimates exclude taxes, disposal fees and diagnostic charges.
- NHTSA, Recalls lookup.
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Published 2026-10-19 · Changelog · About CarCalTune