How Corsa Automotive Built Its Own Collision-Estimating Technology

Every collision repair starts with a number that is wrong.

Not dishonestly wrong. The first estimate on a damaged car is written before anything is taken apart, from photographs and a visual inspection, by someone who cannot yet see behind the bumper cover. It is a prediction. Then the car comes apart, the prediction meets the vehicle, and the two do not match.

That gap is the most expensive thing in this industry, and almost nobody measures it.

What we kept running into

We repair exotic and luxury vehicles in Orlando. The cars are unforgiving and the parts are expensive, which makes the gap between the first write and the final repair unusually visible.

The same problems showed up over and over.

Operations that nobody wrote down. A panel gets replaced. The estimate covers the panel. It does not cover the blend into the adjacent panel, the clear coat over the blend, the de-trim and re-trim, the corrosion protection on the bare metal. Each one is real work that a technician performs and that somebody has to pay for. Individually they are small. Across a full repair they are not.

Parts identified by description instead of number. "Front bumper cover" is not a part. There may be six of them for one model year depending on trim, sensor package, and whether the car has the parking assist option. Order the wrong one and you have lost a week, and the estimate that named it was never actually an estimate for this car.

Repair versus replace decided by habit. Sometimes replacement is right. Sometimes a panel is repairable and replacing it is the more expensive path, and sometimes the reverse is true and repairing it is a false economy that shows up in the paint two years later. That decision is worth real money and it is frequently made by reflex.

Supplements as a second negotiation. The teardown finds what the photographs could not. Now the shop has to go back to the carrier with a supplement, and the strength of that conversation depends entirely on how well the original document was built.

None of this is exotic to us. Every body shop in the country deals with it. The difference is that when you are looking at these problems across a lot of vehicles, patterns start to appear in them.

Why we ended up building something

We tried to solve it the normal way first, which is to say we tried to be more careful.

Careful does not scale. A senior estimator who has written ten thousand jobs carries most of this in their head, and that knowledge leaves the building when they do. Documentation helps and then sits unread. The underlying problem is that the information needed to write a good first estimate is scattered across parts catalogues, labor guides, prior repairs on similar vehicles, and what carriers have actually paid, and no human assembles all of that under time pressure with a customer waiting.

That is a software problem. So we built software.

EstimateLogic Pro came out of this shop. It was built against real vehicles, real damage photographs, real carrier estimates, real OEM part numbers, real labor decisions, and real completed repairs. Not a demo data set and not a vendor feed.

It is now a separate product, for professional estimators and shops, at EstimateLogic Pro. It is not a Corsa Automotive service, and it is not something our repair customers need to think about.

What it does and what it does not

It photographs damage and produces a line-item estimate: parts identified and priced, labor priced, in the format adjusters already read. It is built to make the first write more defensible, which means fewer surprises at teardown and a stronger position when a supplement is genuinely necessary.

It does not replace an estimator. The judgment calls in this trade are real, and a system that pretends otherwise would be dangerous. It does not guarantee a final number, because no first estimate can. It is not authorised, endorsed, or certified by any vehicle manufacturer, and using OEM parts and OEM procedures does not make it so.

The honest description is that it is a tool that puts more of the relevant information in front of the person writing the estimate, faster than they could assemble it themselves.

Why a body shop is the right place to build this from

Most estimating software is built by software companies. That is not an insult, it is just a description of who has historically written it. The result is tools that are excellent at the parts of the problem visible from outside a shop and thin on the parts that only show up on the floor.

The reverse bias has its own risk. A shop building its own tool can end up encoding its own habits. We have tried to guard against that by building against documents from many carriers and many vehicles rather than against how we happen to do things.

What the shop gives you that you cannot buy is the feedback loop. Every repair we complete is a check on whether the estimate was any good. That loop is the whole advantage, and it only exists if you are actually fixing cars.

For our customers

If you are here because your car is damaged, none of the above changes anything for you. You still get an estimate from us the same way, you still talk to a person, and we still handle the carrier.

The reason it is worth mentioning at all is that it explains something about how we work. We were not satisfied with the gap between the first number and the final bill, so we spent a considerable amount of time attacking it. That is the same instinct we bring to the repair itself.