How to Read a Collision Repair Estimate

You hand over your damaged car and get back a document full of numbers, codes, and part names. Most people sign it without understanding a word of it. That is a problem — because this document determines what gets fixed, with what parts, and for how much.

Here is how to read a collision repair estimate like someone who knows what they are looking at.

The Basic Structure

A properly written estimate has a few main sections:

1. Vehicle and owner information — Your name, the vehicle's make, model, year, and VIN. 2. Line items — The actual work and parts. 3. Labor totals — The number of hours billed and the labor rate. 4. Parts totals — The cost of replacement parts. 5. Grand total — What everything adds up to.

Some estimates also include sublet work — operations done by a third party, like glass replacement or wheel alignment — listed separately.

Understanding the Line Items

Each line item on an estimate represents one repair operation or part. Here is what each column typically means:

Operation type:

  • R&R (Remove and Replace) — The part is removed from your car, a new one is installed. The old part is not reused.
  • R&I (Remove and Install) — The part is taken off to access something else, then put back on. The same part goes back on the car.
  • Repair — The existing part is fixed rather than replaced (e.g., a dent is straightened).
  • Refinish — The part is painted. Usually listed separately from the body repair labor.
Hours: The number of labor hours estimated for that operation. This is based on published labor guides (the most common is Mitchell or CCC) that set standard times for each type of repair.

Labor rate: The shop's rate per hour for body and refinish work. These rates vary by region and shop type.

Part number and price: The specific part being ordered and what it costs. Pay attention to what type of part is listed here.

Part Types: What They Mean

This is where many consumers get surprised later. There are four types of parts a shop might use:

OEM (Original Equipment Manufacturer): Made by or for your car's manufacturer. Designed to fit and perform exactly as the original. Usually the most expensive option.

Aftermarket: Made by a third-party manufacturer, not your car's brand. These can range from high-quality to poor. The quality varies widely by supplier.

LKQ (Like Kind and Quality) / Used: Parts pulled from a salvage vehicle. They have existing wear and may not have the exact finish of a new part.

Reconditioned: A used part that has been refurbished. Common for items like wheels or bumper covers.

Your insurance company may specify one type of part to reduce cost. You have the right to ask what type of parts will be used on your vehicle. If you want OEM parts and they are not listed, ask — you may be able to pay the difference. See our article on [OEM vs. aftermarket vs. used parts](/learn/oem-aftermarket-used-parts) for more detail.

What to Look For (and Ask About)

1. Does the list of damaged parts match what you saw?

Walk through the estimate line by line against your memory of the damage. If a part that was clearly damaged is not listed, ask why. It may have been missed, or it may require disassembly to inspect — in which case it will show up in a supplement later.

2. Are there any "blend" operations?

When a new or repainted panel is next to an existing painted panel, the painter often needs to "blend" the existing panel so the colors match. This is normal and adds cost. If your car has a multi-stage paint or a difficult color match, expect to see blending charges.

3. What is the labor rate?

Compare it to other shops in your area if you have concerns. A dramatically lower rate sometimes signals lower-quality work. A very high rate is not automatically better either.

4. Are there "not included" operations?

Estimating software flags certain operations as not included in the standard labor time — things like corrosion protection, masking, or alignment checks. These are legitimate add-ons. Make sure they appear on the estimate if the work is being done.

What a Supplement Is

Sometimes damage is found after the car is already in pieces. A technician removes a bumper and finds that the mounting bracket behind it is bent. That was not visible during the original estimate.

When this happens, the shop writes a supplement — an additional line item (or multiple) requesting approval for the extra work and parts. This is a completely normal part of the repair process.

Your insurer reviews the supplement and approves or denies it. If they deny it, the shop should explain why. Learn more about [how supplements work](/learn/supplement-process).

Getting a Second Opinion

If something on the estimate looks wrong to you, or if the total seems far lower than you expected for the damage you saw, you are allowed to get a second estimate from another shop.

A second estimate is not an accusation of fraud — it is standard consumer behavior. Any reputable shop will understand.

Key Takeaways

  • Every line item represents a specific repair operation or part — understand what each one means.
  • Part type (OEM, aftermarket, used) matters significantly for fit and quality. Ask what is being used.
  • Supplements are normal. They happen when additional damage is found during disassembly.
  • If something does not match the damage you saw, ask before you sign.

Want to find a shop with verified repair quality in your area? Use the [ACRB Shop Finder](/shop-finder).