Parts plus flat-rate labor for 25 common repairs, at your shop's hourly rate
Parts ranges reflect OEM-equivalent quality; the national total uses the ~$130/hr median shop rate. 2025-26 published national ranges.
| Repair | Parts | Labor Hrs | National Total | DIY? |
|---|---|---|---|---|
| Serpentine belt | $40–$110 | 0.4–0.9 | $92–$227 | Yes |
| Battery (installed) | $140–$320 | 0.3–0.5 | $179–$385 | Yes |
| Spark plugs (4-cyl) | $40–$160 | 0.8–1.8 | $144–$394 | Yes |
| Brake pads, front axle | $70–$180 | 1.0–1.6 | $200–$388 | Yes |
| Ignition coil (one) | $90–$250 | 0.5–1.2 | $155–$406 | Yes |
| O2 sensor (one) | $130–$350 | 0.5–1.2 | $195–$506 | Yes |
| Mass air flow sensor | $150–$420 | 0.4–1.0 | $202–$550 | Yes |
| Thermostat | $90–$220 | 1.0–1.8 | $220–$454 | Yes |
| CV axle (one) | $200–$500 | 1.0–1.8 | $330–$734 | Yes |
| Brake pads + rotors, front | $250–$500 | 1.5–2.5 | $445–$825 | Some |
| Control arm (one) | $250–$600 | 1.5–2.5 | $445–$925 | No |
| Brake caliper (one) | $300–$650 | 1.5–2.2 | $495–$936 | No |
| Starter | $300–$600 | 1.5–2.5 | $495–$925 | No |
| Alternator | $350–$700 | 1.5–2.5 | $545–$1,025 | No |
| Fuel pump (in-tank) | $350–$800 | 1.5–3.0 | $545–$1,190 | No |
| Water pump | $300–$650 | 2.0–3.5 | $560–$1,105 | No |
| Radiator | $350–$750 | 1.8–3.0 | $584–$1,140 | No |
| Struts or shocks (pair) | $300–$700 | 2.0–3.5 | $560–$1,155 | No |
| Power steering pump | $250–$550 | 1.5–2.5 | $445–$875 | No |
| AC compressor | $450–$900 | 2.5–4.5 | $775–$1,485 | No |
| Timing belt + water pump kit | $350–$800 | 3.5–6.0 | $805–$1,580 | No |
| Clutch (4-cyl sedan) | $500–$1,100 | 4.0–7.0 | $1,020–$2,010 | No |
| Wheel bearing (one hub) | $200–$500 | 1.5–2.5 | $395–$825 | No |
| Catalytic converter | $900–$2,500 | 1.0–2.2 | $1,030–$2,786 | No |
| Head gasket (4-cyl) | $400–$900 | 8.0–14.0 | $1,440–$2,720 | No |
| Metro | Typical Rate ($/hr) | Metro | Typical Rate ($/hr) |
|---|---|---|---|
| San Francisco | $165–$210 | Chicago | $130–$170 |
| New York | $150–$195 | Philadelphia | $130–$170 |
| Los Angeles | $145–$190 | Miami | $115–$155 |
| Boston | $140–$185 | Denver | $115–$155 |
| Seattle | $140–$180 | Dallas / Houston | $110–$150 |
| Minneapolis | $110–$150 | Atlanta | $110–$150 |
| Phoenix | $105–$145 | Detroit | $105–$145 |
The national median sits near $130/hr. Rates move with real estate and wages, so big coastal metros run 20 to 40 percent above small-city shops for the identical job.
Every repair invoice reduces to the same three layers. First comes the diagnosis: $100 to $200 for the tech's time to pull codes, test, and find the actual fault, and most shops credit it toward the repair if you approve the work. Second are parts, marked up 25 to 50 percent over wholesale, which is also what carries the parts warranty. Third is labor, billed from a flat-rate guide: the book number of hours the job should take a trained tech, win or lose. A water pump that books at 2.0 to 3.5 hours is billed at exactly that whether your tech finishes early or the bolt snaps.
Total = parts + (flat-rate hours × shop rate). This calculator holds 25 common repairs with their published parts ranges and flat-rate hours; you set the labor rate, either from the shop-type presets or your own number. The two totals you see are the low end (cheap parts, few hours, cheap rate) and the high end (quality parts, full hours, top of the rate range).
Pick the repair, pick the shop type (the rate field auto-fills with that shop's midpoint), and override the rate with your shop's actual number if you know it. The DIY flag tells you whether the job books under about two hours and stays off the lift, which is the practical line for driveway work.
Front brake pads and rotors at an independent shop charging $115/hr. Parts run $250 to $500 for pads and rotors of decent quality. Flat rate is 1.5 to 2.5 hours, so labor is $172.50 to $287.50, and the bill lands between $423 and $788. The same job at a dealership billing $150/hr pays $225 to $375 in labor, pushing the total to $475 to $875. Same parts, same work, about $50 to $90 more, which is the dealer premium in miniature.
Now the counter-example. An alternator at the dealer's $150/hr: parts $350 to $700, labor 1.5 to 2.5 hours at $225 to $375, total $575 to $1,075. If your car needs three repairs at once, the calculator gives you all three lines so you can batch them into one visit, since overlapping disassembly (like the timing belt and water pump) is where bundled jobs save real money.
These are national planning ranges, not a quote for your car. Luxury brands, hybrids, and anything turbocharged can run well above these numbers, and your region's labor rate moves every line. Always get the written estimate before authorizing work; in most states you're entitled to it.
At the roughly $130/hr national median shop rate, common repairs run from about $90 for a serpentine belt to over $2,700 for a head gasket. The mid-range staples: front brake pads $200 to $390, pads and rotors $445 to $825, an alternator $545 to $1,025, a water pump $560 to $1,105, and an AC compressor $775 to $1,485, parts and labor included.
Dealership service departments typically bill $120 to $190 an hour versus $90 to $150 at independent shops. You pay for factory-trained techs, OEM parts, and the specialized tooling your model sometimes needs. For warranty and recall work the dealer is the only option; for routine wear items like brakes, batteries, and suspension parts, a good independent usually does identical work for 20 to 30 percent less.
The diagnostic fee pays for the hour or so a tech spends finding the fault, and it runs $100 to $200 at most shops. If you approve the recommended repair, most shops credit the fee toward the job, so you effectively pay it once. Get the credit terms in writing on the estimate before authorizing the diagnosis.
Usually not. Shops mark up parts 25 to 50 percent, but that markup carries the parts warranty, and most shops either refuse customer-supplied parts or warranty only their labor. If the part fails, you pay the labor twice. The better play is to ask for the part price, then price the same OEM or OE-equivalent part yourself and negotiate.
Anything under about two flat-rate hours that doesn't involve opening the AC system or fuel tank: batteries, serpentine belts, air and cabin filters, spark plugs on transverse four-cylinders, ignition coils, O2 sensors, and mass air flow sensors. Brake pads are a popular first job at 1.0 to 1.6 hours. Save the rest: in-tank fuel pumps, timing belts, and clutches need lifts, special tools, or real experience.