You hand over your keys, and a day or so later a multi-page printout comes back full of abbreviations, part numbers and hours. It can be hard to know what you are looking at. The good news is that nearly every collision estimate follows the same logic. Once you know the sections, you can read yours with confidence and ask better questions.

What an estimate actually is

An estimate is the shop's best written prediction of the work needed to return your car to its pre-accident condition, based on what is visible at the time. The keyword is visible. Damage that hides behind panels cannot be priced until it is found, which is the reason supplements exist (more on those below).

The header

The top of the document lists your details and the vehicle: make, model, year, VIN, mileage and often the paint code. Check these carefully. A wrong VIN or trim level can lead to the wrong parts being ordered.

Line by line: what the columns mean

Most estimates list each repair operation on its own line. A line typically has a description (for example, front bumper cover), an operation type, a part number if a part is involved, and amounts for labor and parts.

Operation types

  • Repair: the existing part is fixed rather than swapped, and the line carries labor hours.
  • Replace: a new or used part goes on, and the line has both a part price and labor to fit it.
  • Refinish: the panel is painted. This is often listed separately from the repair or replacement itself.
  • R&I (remove and install): a part is taken off to get to something else, then put back.
  • Blend: paint is feathered into the adjoining panel so the color transition is invisible.

Parts

You may see different kinds of parts on one estimate:

  • OEM (original equipment manufacturer): made by or for the carmaker.
  • Aftermarket: made by a third party. Quality and fit can vary, so it helps to ask who made it.
  • Recycled or used: taken from another vehicle, sometimes a good option for older cars or hard-to-find items.
  • Reconditioned: an original part that has been repaired or refurbished.

Which type is used can depend on your policy, your preference, and the vehicle. If a part type matters to you, say so early and ask what is being quoted.

Labor

Labor is usually broken into categories because different work calls for different skills and equipment:

  • Body labor: straightening, repairing and fitting panels.
  • Refinish labor: preparing, priming, painting and clearing.
  • Mechanical labor: suspension, cooling, air conditioning, steering or other mechanical systems.
  • Frame or structural labor: measuring and pulling when the structure is involved.

Hours are generally taken from industry labor guides, with a rate per hour for each category. If a line looks surprising, ask the estimator to explain how the time was determined.

Paint and materials

Paint is rarely just a can of color. This section commonly covers primer, base coat, clear coat, sealers, abrasives, masking and other consumables. It is usually calculated based on refinish hours. Blending an adjacent panel is a normal part of getting a color to look right across the repair. We go into that more on our auto painting and color matching page.

Other items you might see

  • Sublet: work done by an outside specialist, such as wheel alignment or glass.
  • Calibration or scanning: pre- and post-repair diagnostic scans, and calibration of driver-assist sensors where the manufacturer requires it.
  • Environmental or shop fees: for disposal of waste and similar costs, if applicable.
  • Taxes and deductible: if insurance is paying, the deductible is your share; this is covered by your policy, not the shop.

What is a supplement?

Once your car is partially taken apart, the technician can see what was hidden. A bent bracket, a cracked mount or a damaged sensor may turn up behind a panel. When that happens, the shop writes a supplement: an additional estimate covering the newly found work. If an insurer is involved, they typically review the supplement before it is approved.

A supplement is normal and does not mean the first estimate was careless. It is the result of damage that could not be seen from outside. A good shop will explain what was found and why it matters, ideally with photos. Our page on insurance claim estimates describes how that back-and-forth usually works.

Questions worth asking

  • Which parts are OEM, aftermarket or used?
  • Which panels will be repaired, and which replaced?
  • Will adjacent panels be blended?
  • Are any scans or calibrations included?
  • What happens if more damage is found?

Reading an estimate is easier when the damage itself is explained. For larger jobs, see our collision repair page for how the process runs from teardown to delivery.

If you have an estimate from elsewhere and want a second look, or would like a new one, call us at (562) 542-7296.