Almost every repair bill is labor plus parts, and the labor half is a published hourly rate multiplied by a book time rather than by how long the job actually took. Shop rates average around $132 an hour nationally and run from roughly $85 to $197 depending on the state and the kind of shop. Understanding those two numbers explains most of the difference between one quote and another.
| Service | Typical |
|---|---|
| Shop labor rateNational spread of state averages | $110 to $161 per hour |
Ranges last checked September 2026. They come down automatically when they are due to be rechecked.
Every figure above comes from a named source we can link to, with the date we last checked it. We publish ranges rather than single prices because a range is what a provider will actually give you: the same job moves with what is being worked on, the materials, how hard it is to get at and how busy the trade is locally. Treat these as the order of magnitude to expect before you call, not as a quote.
The figures here are national. Where a source publishes figures state by state, the state pages carry that local figure instead of this one. We do not scale a national number by a multiplier of our own invention.
Every range carries a review date. When that date passes the number comes down until it is rechecked, rather than sitting here undated.
Two numbers do most of the work. The shop rate, which is what the shop charges for an hour of labor. And book time, which is the industry estimate of how long a given job takes on a given vehicle. Multiply them and you have the labor line, whether the technician finished early or ran long.
Shop rates average about $132 an hour across North America, on an index built from more than 10,000 shops. State averages sit either side of that national figure rather than clustering on it, and the table above carries the current spread. Three things move a shop within that: cost of living where it sits, whether it is a dealership or an independent, and whether it staffs certified or master technicians.
Parts are the other half, and they are where two quotes on the same repair can separate by hundreds without either shop doing anything wrong.
Three grades of part, and the shop usually picks one without being asked.
OEM parts come from the vehicle manufacturer and cost the most. Aftermarket parts are made by someone else to fit the same vehicle, and quality runs from equal to poor depending on the brand. Remanufactured parts are used units rebuilt to a standard, common on alternators, starters and transmissions, and usually the cheapest of the three with a warranty attached.
None of them is automatically the right answer. A ten year old car with a failing alternator is a reasonable place for a remanufactured unit. A safety component on a vehicle under warranty is not. The point is that you get told which one you are buying, because it explains the price and it is the question shops least expect a customer to ask.
A check engine light is not a diagnosis. Reading the code takes seconds and tells you which system reported a fault, not which part failed. Finding the actual cause is labor, and shops charge for it, typically an hour or a fixed diagnostic fee.
The question worth asking is whether that fee is credited against the repair if you go ahead. Many shops credit it. Some do not. Both are legitimate, and knowing which before you hand over the keys stops an argument later.
The last one is not about wanting a used alternator. It is a straightforward way to confirm the part was actually replaced.
The national average is about $132 an hour, and the state spread runs from roughly $85 to $197. West Virginia sits at the bottom at about $100 and Alaska at the top at about $161.
Dealerships sit at the top of the range on this data. Technician certification is part of it, a shop staffed with master technicians charges for it, and so is the cost of living where the shop is, which sets its wages, rent and supply costs.
No. The hourly rate covers diagnostic and repair labor only. Parts, shop supplies and disposal fees are separate. Diagnostic time varies: some shops bill it separately, some credit it against the repair if you go ahead.
Only the labor half of it, and only roughly. The bill is the hourly rate multiplied by the hours the job is booked at, plus parts. Ask for both numbers when you get a quote.