Preparation of an "estimate" is usually based on a visual inspection of the physical damage which can be seen. Preparing a guaranteed estimate will require a shop to perform a proper damage analysis, by performing a tear down to identify damaged parts and systems before repairs can be performed. This repair process is based on recommended procedures from the manufacturer https://www.oemonestop.com/ and I-CAR. Your insurance company is not required to follow the guidelines outlined by the manufacturer, because they are not the one who is repairing your vehicle. Body shops have learned expensive lessons from not doing what proper procedures in the repair. Any once can give you an idea what it my cost to repair your vehicle to a pre-accident condition, but to get the actual cost of the repair you need a guaranteed estimate. The price does not change after the repairs have been started.
The damage to this bumper was damage along with the tow hitch in a rear accident. The damage does not look like much, but in the end the final bill was over 3,000 dollars. The rear tow hitch had to be replace along with the rear bumper section. Have a professional look at the damage, because it an cost more than you think.
When we perform and inspection we can perform a guaranteed estimate for repairs. The quality of the parts use in the repairs to your vehicle can vary greatly from supplier to supplier. All brakes, tires and suspension parts are not created equal, and you pay for what you get. We prefer to use the best quality parts in our repairs, because we prefer to do the job only once.
In order to properly diagnose the problem with any vehicle we need to look at the vehicle. We can give you a price to correct a symptom, but fixing what the customer thinks is wrong will not necessarily correct the problem with the vehicle performance.
When your insurance ask you to have mobile glass service this is what you might eventually get with that replacement. The installer uses a long knife to cut the damage glass out and in the process they score the paint which is protecting the frame of the windshield. Not restoring the paint protection of the frame of the windshield can and will result in the following. If the replacement is done when the weather is below 20 degrees there is not guarantee that the windshield will set correctly. The windshield is a structural part of the vehicle, and having it installed correctly will only protect the people in the vehicle